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https://github.com/aakashdeveloper/randominterview
https://github.com/aakashdeveloper/randominterview
Last synced: 23 days ago
JSON representation
- Host: GitHub
- URL: https://github.com/aakashdeveloper/randominterview
- Owner: Aakashdeveloper
- Created: 2024-06-19T17:29:04.000Z (8 months ago)
- Default Branch: main
- Last Pushed: 2024-10-11T17:54:57.000Z (4 months ago)
- Last Synced: 2024-11-20T15:39:01.272Z (3 months ago)
- Language: JavaScript
- Size: 160 KB
- Stars: 0
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
Awesome Lists containing this project
README
given a 1-indexed array of integres
that is already sorted in non -descresing
numbers be numbers[index1] and numbers[index2]
where 1<= index1< index2<= numbers.length
return the indices of two number index1 and index2 added by one as
an integre array [index1,index2] of length 2
example1
input [2,7,11,15]
target = 9
return [1,2]
example2
input [2,3,4]
target = 6
return [1,3]
function calc(job){
var income = 5
if(job){
var income = 50
}
{
var income = 500
}
{
var income = 5000
}
return income
}
console.log(calc(true))
let arra [
{user:'Sateesh", addess:"Hyd", count:10},
{user:'Ranjith", addess:"Hyd", count:11},
{user:'Mahes", addess:"Hyd",, count:12}
]
async function(req,res){
try{
const a = await someFunctin()
const b = await someFunctin1()
res.send('ok')
}
catch(error){
res.error()
}
}
python
find all duplicate in an array of integeres
every integer only appers once or twice
we need to find which apper twice
input > [4,3,2,7,8,2,3,1]
output > [2,3]
javascript
given a number n write a function that return the total number of primes up to and including n
ex
n = 5 and result should be 3
n = 0 and result should be 0
n = 100 and result should be 24
fetch data from url and display data in table in vuejs
display in angular tempalate variable fee
if there are less than two digit for integer part of the the percent you have to display leading zeros
if theere are ess than two decimal digit you have to display trallig zeros
if there are more than three decimal digits you need have round to the 3 digts
amount div
if there are less than 9 digit for the integer part of the amount you need to display leading zeros the number
have to be separated after every thrid digit with comma
if there are less than 2 decimal digit you have to display
trailing zero and if there are more you have to round value to 2 decimal
public class A{
private A instance
private List items;
pubic void setList(String[] items) {
this.items = items
}
public void getSize() {
this.items.size()
}
public boolean isAvailable(string search){
for(int item: items){
if(item == search){
return true
}
}
}
public statuc A getInsatnce(){
if(instance ==null){
return new A()
}
return instace
}
Sting toString(){
return "text1"
}
}
find the longest palindrome substring word
is banana javascript
start by creating a composable function. Start with useToggle
/*implement composable function that toggle the state
use useRef and state in vuejs*/
function useToggle(){
}
const [state,toggle] = useToggle(false)
State:{{state?'ON':'Off'}}
toggle
var studs = [{
name:'a',
age:12,
marks:70,
roll:1
},
{
name:'b',
age:12,
marks:35,
roll:2
},
{
name:'c',
age:12,
marks:3,
roll:3
},
{
name:'d',
age:12,
marks:45,
roll:2
}]
we need to convert into object
where key will be roll and value is marks
if roll number is repeated add all marks for that roll number
javascript
given a tree we want the value of tree node associated with level
return in which tree node is present
along with the level
(function(){
var a = b = 3
})()
console.log("b defined? "+(typeof b !== 'undefined'))
https://jsonplaceholder.typicode.com/posts
call api in angular service using observable
now in html give me submit button and show two way data binding
nodejs
create a POST endpoint /maxProfit to find the max profite
that can be obtained by buying or selling share
the endpoint accept a JSON body
with an array of n integres represent the price
of the stock on n consecutive day
the endpoint shoukd return JSON
max Profit >ma xprofite obtained by buying and selling stocks
transction > array iof tuples represting the buy an sell days that leading
to the max profite
each tuple should contain two integeres represnt the zero-indexed day numbers
RequestBody
{
"price":[7,1,5,3,6,5]
}
Response
{
"maxProfit":7,
"transction":[
{
buy:1,
sell:5
},
{
buy:3,
sell:6
}
]
}
golang
write a code that concurrently fetches the page content
of the provided url and count the instance of the word "Oz"
task 1: Add a comment to the count function explaining what it does
var {
url = [] string{
"htt1",
"htt2",
"htt3",
}
}
func main(){
fmt.Println("done")
}
func count(url string)(int, error){
res, err := http.Get(url)
if err != nil{
return 0, count
}
defer res.Body.Close()
body := bufio.NewReder(res.Body)
count :=0;
for{
m := pattern.FindRenderIndex(body)
}
}
var myobj ={
foo:'bar',
func:function(){
var self = this;
console.log('outer func'+this.foo)
console.log('outer func'+self.foo)
(function(){
console.log('inner func'+this.foo)
console.log('inner func'+self.foo)
}())
}
}
this code cause stackOverflo if arrat
var list = readHugeList()
var nextListItem = function(){
var item = list.pop()
if(item){
//process the list item
nextListItem()
}
}
javascript
given a linked list swap every two adjcent nodes and return
its head.
you may not modify the value in the list nodes, only nodes itself may be changes
example1
input 1->2->3->4
output 2->1->4->3
javascript
example Input 1(currencies and conversion rates)
USD, GBP, 0.69 (means USD=GBP*0.69)
GBP, JPY 140 (means GBP=JPY*140,0)
example Input 2(quires)
USD, GBP, 0.69
GBP, JPY -> USD = GBP*0.69= JPY*140.0*0.69=JPY*(140.0*0.69)= JPY*96.6 -> 96.6
write function that is able to calculat ethe conversion rat eof every query in input2
Like (USD,CNY)
javascript
return the string
input > uoy-era-woh
output> How are you
sql
write a query the fetch the 2nd
highest salaery from each dept
table sturtcure
dept id | dept | name | salary
python
input = "bcabc"
output = "bca"
remove duplicate form string
simple login page with typescript
.class-a{
color:green
}
.class-b.class-a{
color:green
}
javascript
write a function
accept a string return a function that
return the string that was passed in
html and css
build up a page layout
header on top
footer at always content
in between we have content
if content is large make is scrollable and
scrollbar should be between content
do not scroll header and footer
javascript
function getData(number){
var a = 0;
let b = 0;
const c = 0;
if(number > 5){
var a = 1;
let b = 1;
const c = 1;
}
return [a,b,c]
}
getData(7)
var x = 21;
var girl = function(){
console.log(x);
x = 20;
}
girl()
function sum(){
var a = 3;
return function(b){
console.log(a+b)
}
}
var fn = sum()
console.log(fn(2))
javascript
write function getTotal which will return sum of all argment
getTotal(2,3,4,5)(4,5,6)
javascript
setTimeout(() => {
console.log('1');
},0)
new Promise((resolve) => {
console.log('2')
resolve()
}).then(() => {
console.log('3')
})
console.log(4)
queueMicroTask(() => {
console.log('5')
})
new Promise((resolve,reject)=>{
reject("6")
}).catch(console.log)
write function in typescript
when we either pass string of number argumnet
if pass string as argument then it should return
string or if we pass number as argumnent
then it shoudl return number
write function which will return most repeated number in an array with its count{5:4}
const input = [2,5,2,[5,4,[5,6[5,6]]]]
output :{5:4}
react
A list of color composed of "red" and "green" element
A "square" component that renders a square of a given color and executes a click method
implement a parent component named "app"
that:
1. Uses the given square component to render all squares from the
"colors" list
2. Exposes the following
- which clicking a green square => change current element
to "red" + add 1 new "green" element to the end of list
- when clicking a red square => delete current element
vuejs
we have 3 garage user have to choose 1 gaurage and each
a has 10 charger
b has 7 charger
c has 4 charger
of them have charger. user request for queue for charger
and click in the application
and we have to return on which queue number
javascript function
to we have 3 garage user have to choose 1 gaurage and each
a has 10 charger
b has 7 charger
c has 4 charger
of them have charger. user request for queue for charger
write a logic to select charger
user can choose more then 1 garage either
A or B
B or c
A or C
React with typescript
create parent and child and in child component make input field
and get value in parent component
javascript
comapre two array and return first array element that
are not present in array2
let arr1 = [1,2,3,4,5]
let arr2 = [0,2,3,4,5]
output>1
const Mocha = require('Mocha')
const mocha = new Mocha()
const except = require('chai').expect
mocha.suite.emit('pre-require',this,'solution',mocha)
function countChange(change){
return undefined
}
Question javasript
return the value of the changes describe in the object
where the key is the type of coin and the value is the
number of that type of coin
values for each coin in cents:
PENNY --> 1
NICKEL --> 5
DIME --> 10
QUARTER --> 25
describe('change counter',function(){
if('sum the change value',function(){
const change = {
QUARTER:1,
DIME:2,
NICKEL:3,
PENNY:7
}
expect(countChange(change)).to.equal(0.67)
})
})
list = 1,2,3,4,5
print list[10:]
Javascript
return wether a game has been won based on this player location scores
** A player wins if they
* Have no location worth negative points and
* Hava a total of least 1000 points OR a
single location worth 400 points or more
** Example ** [300,100,500] ->True (400 points
or more in one location)
*[300,200,300,350] ->True (1000 points
or more )
*[300,200,300,350, -50] ->False (location with negative points)
** @param {number[]} locationScores An integer array
of this player location scores
* @ return {boolean} weather or not player has won
Take input form use an
input = {10,7,4,6,8,10,11}
they have common differenc of 2
need to find the longest subarray
javascript
problem name is walking robot
Run the code in the REPL to object
implement the walk method this method take in a string,
path, where each character in the string corresponding to
a potential movement of the robot. The robot can move
up,down,left and right represented by the character 'U', 'D', 'L' and 'R'
All other character can be ignored . Assume the robot intiail position
is at (0,0). The output of this method is robot final x and y
coordinates relative to the inital position
need to pass test case
it('go 3 times up', function(){
var input = 'UUU'
var result = walk(input)
assert.deepEqual(result,[0,3],'')
})
given a list of student test scores, find the best avergae grade
each student may have more than one test score in the list
complete bestAverageGrade function
if gas one parameter, scores, which is an array of student test scores
each element in the array is a 2d array of the form [student name, test score]
test score may be +ve or -ve integeres
if you end up with an avg grade that is not an integer you should
use a floor function to return the largest integere less than or equal to the avg.
return 0 for an empty array
example
input
[
["A","87"],
["B","100"],
["C","64"],
["D","22"]
]
output is 87
golang
input text = AABAACAADAABAABA
pattern : AABA
output : pattern found at 0, 9 and 12 index
React
implement a button that can be renedere from a
configuration coming from the server.Assume there
is already a component that get the configuration
from the server
a> color
b> width and height
c> text label
d> onclick action call
* send Rest Service request with some data
* change color and label
* local log
create dummy object coming form api
add functionality to button so that i can drag and drop button
any where and it shoudl stay there
golang
func main(){
42.toString()
int.toString(42)
strcov.IToa(42)
fmt.Sprintf("%v",42)
}
golang
print number 100 to 1 in desceinding order
start from 0 but still want to print in descending order
func main(){
}
golang
fizbuzz
for 1 to 100
multiple of 3 print fiz
multiple of 5 print Buzz
multiple of 3 & 5 print fizzBuzz
func main(){
}
package main
import "fmt"
func main() {
for i := 1; i <= 100; i++ {
if i%3 == 0 && i%5 == 0 {
fmt.Println("FizzBuzz")
} else if i%3 == 0 {
fmt.Println("Fizz")
} else if i%5 == 0 {
fmt.Println("Buzz")
} else {
fmt.Println(i)
}
}
}
this check is expensive can we minisise the checks
golang
type RunningAverage struct{
}
func main(){
ra := RunningAverage{}
println(ra.add(1))
println(ra.add(2))
println(ra.add(3))
println(ra.add(78))
println(ra.add(11))
}
write the add function to add elmenet inside and get avearge
/////////
golang
given a root of a binary tree and an integer targetsum
return all root-to-leaf paths where the sum of the node values in
the path equal target sum. Each path should be returned as a list of the node value
not node reference
a root to-leaf path is a path starting from the root and ending at any leaf node
A leaf is a node with no children
input : root = [5,4,8,11,null,13,4,7,2,null,null,5,1,] target sum = 22
output = [[5,4,11,2],[5,8,4,5]]
let say i have the ability to fetch all music that a given customer
has listened to in the past 30 days and how many times they listened to each song
i'd like to build a playlist containig all the music that people at a party have listened
to sorted by the number of times each song has been played by the group collectivity
how would you store the playlist?
what code would you need to run to get the next song to play?
design a chat application
we can support talk to agent and person to person not group
agent
what design we can create, data model as well as api call
write python
conncet web service authenictate and get data
what module we need
sql query
id A B C
1 1 2 3
2 4 5 6
3 7 8 9
3 10 11 12
4 13 14 15
4 16 14 15
identify rows with matching id, valB and ValC
go object with active as true from array in javascript
javascript combine the array and remove duplicate
var employee = [
{
user:'binary',
age:36,
active:true
},
{
user:'Fred',
age:40,
active:false
},
{
user:'pebbles',
age:10,
active:true
}
]
var user = [
{
user:'binary',
age:36,
active:true
},
{
user:'mike',
age:40,
active:false
},
{
user:'raplh',
age:10,
active:true
}
]
var user = [
{
empid:7616,
firstName:'abc'
active:true
},
{
user:'mike',
age:40,
active:false
},
{
user:'raplh',
age:10,
active:true
}
]
golang
function where read string as input
i want the dictory as output give count of char in that string
nodejs
right rotation
input arr[] = {1,2,3,4,5}
k =2
output4,5,1,2,3
golang
write fizz buzz from 1 to 15
divide by 3 i s fizz
divide by 5 i s buzz
divide by 2 & 5 i s fizzbuzz
golang
accept sequence of whitespace sepearted word as input and
print the words after removing all duplicate word and sort them alphanumerically
input
hello world and practice makes perfect and hello world
output
again and hello makes perfect practice world
golang
count the frequency of word in a text
"go is easy to learn go is fun go is powerful"
golang handle panic
package main
import "fmt"
func recoverFromPanic(){
if r:= recover(); r != nil{
fmt.Println("Recoverd from panic:", r)
}
}
func doSomething(){
panic("panic")
}
func main(){
doSomething()
fmt.Println("Program Conyinue")
}
public class Account{
private string id;
private string id;
private string id;
private string id;
}
AEM call external service and need to unique account on basis filter on firstname lastname zipcode
golang
write a progran that accept a sentense can calculate the number and digitts
input = "Hello world! 123"
output
letter = 10
digit = 3
golang
calcutae avg score of a class indivial score are marked
TOM 90
Tim 85
Kumar 60
Anjana 98
Kathy 76
golang
implemnt sumofsquare which take an integer, c and
return the sum of all squares between 1 and c.
you will need to use select statements, goroutine and channels
enhcance the code with find the difference between
the square of the sum and sum of square
improve if else condition javascript
return whether a game has been won based on this player's
location scores
A play win if they
have no location worth nrgative point and
have total of at aleast 1000 point or a single locaion worth 400
point or more
example [300,100,500] -> true(400 poins or more in on location)
[300,200,300,350] -> true
[300,300,300,350,-50] -> false
funtion isGameWon(locationScore){
let negativeScore = false;
let singleLocation = false;
let totalScore = 0
for (let i =0;i=400){
singleLocation = true
}
totalScore += locationScores[i]
}
if(negativeScore){
return false;
}else{
if(singleLocation){
return true
}else{
if(totalScore >= 1000){
return true;
}else{
return false
}
}
}
}
input : [10,7,4,6,8,10,11,12,13,14]
find out longest subarray in array with common difference
ouput = [4,6,8,10] and [10,11,12,13]
in react write componrnt that input and return output
golang
text : AABAACAADAABAABA
pattern : AABA
output pattern found at 0,9 and 12 index
golang
you have a word in lowercase yourr task is to write thei word
using fragment you are given
Ecach element of fragment can be used more than once
but they cannot overlap
it is guaranteed that it is always possible to write
the word using given fragment
what is the min number of element you have to use?
return 0 if its not possible to build a word
example
bu + ild + wo + rd
BuildWord("buildword", []string{"buil","dwor","bu","ild","wo","rd"}) = 4
angular
create a button on the page open pop up
on the pop there will be checkboxes and
when selecting the check box we click save
the value of checkbox will be passed to dummy api service
React logic
when login state is true render user list component into child
React counter program using userreducer with increment and decrement
golang lru cache implement
package main
import (
"container/list"
"fmt"
)
type LRUCache struct{
maxEntries int
cache map[interface{}]*list.Element
evicted chan interface{}
list *list.List
}
type entry struct{
key interface{}
value interface{}
}
func NewLruCache(size int) *LRUCache{
lru := &LRUCache{
maxEntries:size
cache: make(map[interface{}]*list.Element)
evicted: make(chan interface{},1)
list: list.New()
}
return lru
}
func (lru *LRUCache) EvictionChannel() <- chan interface{}{
return lru.evicted
}
func(lru *LRUCache) Add(key,value interface{}){
if elem, ok := lru.cache[key]; ok{
lry.list.MoveToFront(elem)
elem.Value.(*entry).value = value
return
}
if lru.list.len() >= lru.maxEntries{
elem := lru.list.Back()
if elem != nil {
lru.list.Remove(elem)
delete(lru.cache, elem.Value.(*entry).key)
select{
case lru.evicated <- elem.Value.(*entry).key
default:
}
}
}
newEntry := &entry{key,value}
ele := lru.list.PushFront(newEntry)
lru.cache[key] = ele
}
func(lru *LRUCache) Get(key interface{}) (interfaceP{,bool){
if elem,ok := lru.cache[key];ok{
lru.list.MoveToFront(elem)
return elem.Value.(*entry).value,true
}
return nil,false
}
func(lru *LRUCache) Len() int{
return lru.list.Len()
}
type User struct{
Name string
IP string
Location string
}
create a map with name as a key using struct
///////
create have component that have text box
on mount we will call the api and get the data.
and when we type something in text box i will again call api
and display resut
for api call create custome hook and resume for both call
////////
javascript
let person = {
"name":"john",
"address":{"street":1}
}
let person1 = person
person1.address.street = "2"
person1.name = "Amit"
console.log(person)
console.log(person1)
python
write code i have a word i have not extract first
letter which is not repeated
input = 'swiss'
ouput = 'w'
golang
number := [8]int{10,20,30,40,50,60}
slice from 4 to 8
golang
i have user struct
type User struct{
Name string
IP String
Location string
}
create a map for the key is name
write replace only 3 line code
Main(){
x := 5
replace(&x,10)
fmt.Println(x)
}
List = [1,1,'j',true]
Mutuable (can be changed)
Allow duplicate
tuple = (1,2,3,'dd',5)
Immutable(cannot be changed)
dictionaries
{
"name":"john",
"age":10
}
Mutuable
key must be unique
sets
{1,2,3}
> Mutuable
> No Duplicate value
golang
similuate race condition example code
golang
package main
import "fmt"
func main(){
isSapce := func(ch byte)bool{
switch(ch){
case ' ' : //errro
case '\t':
return true
}
return false
}
fmt.Println(isSpace('\t'))
fmt.Println(isSpace(' '))
}
import (
"fmt"
"time"
)
func main{
data := []string{"one","two","three"}
for _,v := range data{
go func(){
fmt.Println(v)
}()
}
time.sleep(3* time.second)
}
golang
[]string["flower","flow","flight"]
output:"fl"
find larget prefix
golang
simple code how to go rotuine work
golang write function
there is imteral api call and get the Response
Make http request if respons is good display else add error handling
golang code to connect to database
just check if connection is succesful return nothing
else error
golang function read json file and print filed nam and id
React
create 2 component address search
parent and child
when we type address give suggestion for address
select approprite address and console.log
take dummy data
golang
we define a simple "Greeter"
service with "Sayhello"method
that take a "hellorequest"message
containing a name of return
a "HelloRequest" message write a greeet mesaage
service Greeter{}
(function(){
var a = b = 3
})();
console.log("a defined? "+(typeof a!== 'undefined'))
console.log("b defined? "+(typeof b!== 'undefined'))
with simple html and javascript without css like enter pin
we need to hide input char as soon user type after 3 sec
when type next char all previous must be hidden
React
creat a responisve layout of 3 column with flex box
javascript
const trans = [{
"category":"sports",
"amount":50
},
{
"category":"sports",
"amount":100
},
{
"category":"sports",
"amount":-20
},
{
"category":"travel",
"amount":100
},
{
"category":"dinning",
"amount":150
},
{
"category":"travel",
"amount":120
}]
write one code which will return output like its is retrun highest amount from particular category
[
{"sports":100},
{"travel":120},
{"dinning":150}
]
flat this array with one loop only
const arr1 = [1,2,3,4,[5,6,[7,8]],[9,10]]
function should take index of nested array
add try catch also and optimised to use one loop
we can pass varaible like example pass 1
output should be
input 1 > 1
output > [1,2,3,4,5,6,7,8,[9,10]]
input 1 > 2
output > [1,2,3,4,[5,6,[7,8]],9,10]
React
useEffect()
useEffect(fn,[dep])
you are given an integer 'num' you can swap two digit at most once
to get the max values number
retur the max valueed number you can Get
example 1
input > 2736
output > 7236
example 2
input > 9973
output > 9973
example 3
input > 1993
output > 9913
//////
python
take 2 diff size of unsorted array containing
duplicate elements then merge the array without duplication
in a sorted manner
python
code to check if two strings are anagram of each other?
listen-silent
hear-hire
bored-robed
react
this.setState({
counter:this.state.counte+this.props.incremtn
})
const obj1 = {a:1,b:{c:2,d:3}}
const obj2 = {b:{c:4,e:5},f:6}
javascript
write function take array of integrager and return
most frequent value in array
const numbers = ['10','10','10'].map(parseInt)
const fn = () => console.log(this)
const fn1 = fn.bind({something:true})
.net
you have tasked with migrating a substatial VB 6.0 application to VB .net how would you approch this migration to ensure minimal disruption and maintain functionality
javascript
Promise.reject()
.then(
() => console.log(0),
() => console.log(1)
)
.finally(() => console.log(2))
.catch(() => console.log(3))
.then(() => console.log(4))
function run(){
console.log('Script start')
setTimeout(function(){
console.log('settimeout 1')
},1)
setTimeout(function(){
console.log('settimeout 0')
},0)
}
javascript
var a = 1
function b(){
a = 10
return;
function a(){
}
}
b()
console.log(a)
for(var i = 1;i<=5;i++){
setTimeout(function(){console.log(i)},1000)
}
html and csss
have 4 box and align them on all 4 corner with flex in css
javascript
a = 10
console.log(a)
var a
function x(){
for(var i=0;i<5;i++){
setTimeout(function(){
console.log(i)
},1000)
}
console.log('123')
}
x()
React
fetch todo items from the given api
render the todo items on the page
update the server when a todo item is checked or unchecked
api document
https://jsonplaceholder.typicode.com
[GET]/todos?userId=1
retrive all todo items for user 1
[patch]/todos/
update the todo item with the given id
html css
we have outer and inner div we need to design css for both
we need to have inner box smaller and placed in center of outer large box
we have 2 indepent component and need to share data from component 1 to compoent 2 using redux flow
nodejs
i have list of book in sql and you want a route for insert and update data
we have 1 node project and 4 database how can i make 4 db connection with app
need sql query
emp_master > emp_id, emp_name, manager_id
fetch hierarchy of manager both in upward and doward direaction based on empid
E1>M1>M2>M3>M4> CEO(upward)
E1 hiberante arch and how jpa help us in lazy loading
> implement the redis cache in springboot
> oauth in spring boot
> how to take care cache thread pool
> java if we have parallel stream explain machenism
java compiliable future work in
angular
create custome direactive to move mouse in downarad direaction
create post /maxProfit to find the max profit that can be obtained by buying and selling a
single share of a given stock multiple times.
the endpoint should access a json body with an array of n integre represent the price of the stock on n
consecutive daya
output json should
maxprofit: an integer the mac profit that can be obtained bt buying and selling
transction: tuple represent the by ans sell in the day
ex
input {
"price":[7,1,5,3,6,4]
}
Response
{
"maxProfit":7,
"transcition":[
{
"buy":1,
"sell":5
},
{
"buy"3,
"sell":6
}
]
}
python
use pytest to write unit test
import aiohttp
async def fetch_user_data(user_id):
url = f"http:/testurl/{user_id}"
async withaiohttp.ClientSession() as session:
async with session.get(url) as response:
response.rasie_for_status()
return await response.json()
def fetch_user_posts(user_id):
return [{"id":1,"title":"Post 1"},{"id":2,"title":"Post 2"}]
def get_user_with_post(user_id):
user_data = fetch_user_data(user_id)
user_posts = fetch_user_posts(use_id)
return{
'user':user_data,
'posts':user_data
}
golang
create function name reverseString
inout > "hello"
output> "olleh"
golang
write function to check if a number is prime
input > isPrime(2)
output > true
input > isPrime(4)
output > false
golang
partitioning into min number of deci-binary numbers
A decimal number is called deci-binray of each of its digit is either 0 or 1
without any leading zero. example 101 and 1100 are deci-binary and 112 and 3001 is not
example1
input n = "32"
output = 3
explaination 10+11+11 = 32
example2
input n = "82734"
output = 8
golang
[0 0 1 0
0 1 0 0
0 0 0 1
0 1 0 0]
generate 4*4 output sould be 1'once
golang
if we have input as array of string we need to find the value is palindrome or not
input = ["kayak","deter","Abba","make","deified"]
output = [['kayak','Abba','deified'],['deter','make']]
javascript
implement a function for dashify
input > hello
output> h-e-l-l-o
javascript
remove duplicate from the array
input = [2,1,2,3,1,2,3]
output = [1,2,3]
React
create a todo list in ui without any functionality
use data
const data = [
{
id:1,
text:'Docoto call',
completed:true
},
{
id:2,
text:'Metthing call',
completed:false
},
{
id:3,
text:'Scoor call',
completed:false
}
]
javascript
let x = {}
x.forEach((y) => {console.log(y)})
python
given a partically filled 9*9 2d 'array grid[9][9] the goal is to assign digit to the empty cell
so that every row,column and subgrid of size 3*3 contains exactky one instance of the digit fron 1 to 9
goal is to create a fun will retur the sudoko filed out in 2D arrat
javascript
sample bank app like creat account and get user account details
if account id already ther then should say id already takem
golang
implement a simple linklist
React
in social media we have like and disalike
we want counter value to increment and dectrmenent
React
create 2 input
one static currency as US
and in second one user can enter and on basic of that it should conver
//html css
// you have 4 divs align then in one line with eqaul space between using flex box
//javascript
// given a linked list swap every two adjcent nodes and return
// its head.
// you may not modify the value in the list nodes, only nodes itself may be changes
//javascript do not use inbuilt
revert the string
input > uoy-era-woh
output> How are you
//javascript
write function getTotal which will return sum of all argment
getTotal(2,3,4,5)(4,5,6)
python
write function fill_shape to fill coloer
where parameter type of canvas is (canvas: List[List[int]],x;int,y:int)
similar to ms paint(fill the canavs from the point clicke up until the closet boundries)
white pixels are reoresented with 0,
black pixels are reoresented with 1,
the coolor are represented by 2
python
list of integere and find the number apperining most
python
design a class to calculate area of shape
it can square, rect or circle
Javascript
the code recusive code will cause a stack overflow of the array list is too large
how can you fix this still retain the recusive pattern
var list = readHugeList()
var nextListItem = function(){
var item = list.pop()
if(item){
//process the list
nextListItem()
}
}
HTML
>> What is the novalidate attribute used for in HTML forms
>> Regex to accept only numbers
^\d+$
>> How can you enhance the accessibility of application
>> Difference in async and defer attributes are used in the tag.
async: Downloads the script asynchronously and executes it as soon as it is ready, without blocking the HTML parsing.
defer: Downloads the script asynchronously but defers execution until after the HTML parsing is complete.
>> Block VS Inline
>> How we can allow user to open default mail
<a href="mailto:[email protected]">Send Email</a>
>>
CSS
>> in which case we should use translate insted of absolute positing in css
>> How to make div in center
.centered {
margin-left: auto;
margin-right: auto;
width: 50%; /* or any width */
}
>> z-index property and how does it work
>> how to adjust height of one div with respect to other
>> Change sequence of div in CSS
.box1 {
order: 3;
}
.box2 {
order: 1;
}
.box3 {
order: 2;
}
>> How do you combine multiple media query conditions?
>> Purpose of and, not, and or not in Media querry
>> Breakpoints in media query
>> Flex Container with Equal-Width Children
.container {
display: flex;
}
.item {
flex: 1; /* Equal width for all items */
padding: 10px;
background-color: lightcoral;
}
>> Reorder Flex Items
>> CSS to add background to even rows in list
li:nth-child(even) {
background-color: #f0f0f0;
}
------------------------
javascript
Array Destructuring:
const arr = [1, 2, 3];
const [a, b, c] = arr;
console.log(a, b, c); // Output: 1 2 3
Object Destructuring:
const obj = { x: 1, y: 2 };
const { x, y } = obj;
console.log(x, y); // Output: 1 2
Output of
const nested = { a: [1, 2], b: { c: 3 } };
const { a: [x, y], b: { c } } = nested;
// Output: 1 2 3
return the string
input > uoy-era-woh
output> How are you
javascript
write function getTotal which will return sum of all argment
getTotal(2,3,4,5)(4,5,6)
javascript
comapre two array and return first array element that
are not present in array2
let arr1 = [1,2,3,4,5]
let arr2 = [0,2,3,4,5]
>> Find the Largest Number in an Array
function findLargestNumber(arr) {
return Math.max(...arr);
}
>> How we make sure if the function is called after set amount of time
function debounce(func, wait) {
let timeout;
return function(...args) {
clearTimeout(timeout);
timeout = setTimeout(() => func.apply(this, args), wait);
};
}
const log = () => console.log('Debounced!');
const debouncedLog = debounce(log, 2000);
debouncedLog(); // Function will be
>> debounce in javascript
map
filter
spread
let vs var vs const
--------------------
Node
Diff between put vs patch
Differen http status code
what is middleware and which middleware we use fo post call
How jwt work
diff between first and refresh token
>> difference between require and import in Node.js?
(coding)
i have list of book in sql/mongo and you want a route for insert and update data
-----------
How to create custome pipe
what to restrict user to user certain page in app
What are the subjects in angular
Use of mergeMap and concatMap
>>are higher-order mapping operators that transform Observables, but they handle the emissions of inner Observables differently:
>> What are some common RxJS operators?
map: Transforms emitted values.
filter: Filters emitted values based on a condition.
mergeMap / flatMap: Projects each value to an Observable and merges the results.
concatMap: Projects each value to an Observable and concatenates the results.
switchMap: Projects each value to an Observable and switches to the latest one.
debounceTime: Emits a value from the source Observable only after a specified delay.
distinctUntilChanged: Emits only distinct values based on a comparison function.
take: Emits only the first N values from the source Observable.
>> Purpose of combineLatest work?
>> How can you handle errors in RxJS?
>> Different type of subjects
(coding)
https://jsonplaceholder.typicode.com/posts
call api in angular service using observable
ES6
>>How generator function works
>> Promise.all and Promise.race
python
def abc(x):
x = 10
y = 5
abc(y)
print(f"y = {y}")
def abc(x):
x += [10]
y = [5]
abc(y)
print(f"y = {y}")
def abc(x):
x = [10]
y = [5]
abc(y)
print(f"y = {y}")
def abc(max):
count = 1
while count <= max:
yield count
count += 1
out = abc(5)
print(next(out))
print(next(out))
print(list(out))
a = [[1,2,3],[4,5,6],[7,8,9]]
out = [[row[i] for row in a] for i in range(len(a[0]))]
print(out)
you are given an array customers where customers[i] = [arrrival,time]
arrival > is the time of the customer. The arrival times are sorted in non-decreasing order.
time > is the time needed to prepare the order of the ith customer
when a customer arrives he give the chef his order and the chef start preparing it once he is idle
the customer wait till the chef finesh preparing the oder
the ched does not prepare food for more than one xustomer at a time
the chef prepare food foe the custome rin order they input
retunr the avergae wiaiting time of all customer solution with 10^-5 from the actual answer are
considered acceptrd
ex1
input [[5,2],[5,4],[10,3],[20,1]]
output> 3.25000
ex2
input [[1,2],[2,5],[4,3]]
output> 5.0000
Javascript
var a = (function(x){
delete x;
return x;
}(0))
console.log(a)
//output> 0
/////
Caching
> What is the use of in-memory caching in application
> Implement a simple logic with nodejs+mongodb+redis for get api
> difference between in-memory and distributed caching
>> How does Redis handle persistence?
>> How to monitor and manage Redis performance
>> How does Memcached handle data expiration and eviction?
Explain the two main persistence mechanisms:
RDB (Redis Database Backup) and AOF (Append-Only File), and their trade-offs.
graphql
> What is GraphQL, and how does it differ from REST?
> What is a GraphQL query, and how does it differ from a mutation?
> Can you explain the concept of "schema stitching" in GraphQL?
>> Role of introspection in GraphQL
> Given a GraphQL query, write the resolver function for fetching data from a database.
> Implement a pagination solution for a list of items using cursor-based pagination in GraphQL.
> How do you handle file uploads in GraphQL?
> How do you implement caching in a GraphQL server?
Jenkins
> how are you using jenkins in your app and what are the different stages you have
> Can you write simple jenkins file with pull, build and deploy stages
MySql
> Create a query in MySql for student and marks table to find top five student on basis of marks
where both table have releation ship of rollNo
( if done above)
> Please save above output in view
> Write a SQL command to update data through a view and handle any potential issues with view updates.
>> Provide the SQL command for updating data and discuss any limitations or requirements.
>> What is a materialized view, and how does it differ from a regular view?
Serverless Architecture
> What id a usecase of lambda in your application
> what are the limitation on lambda
> How you are exposing lambda function
Ans > Api gateway
> What are the common triggers for serverless functions?
> How do you handle authentication and authorization in a serverless environment?
xplain methods such as API Gateway authorizers, OAuth, JWT tokens, and integrations with identity providers.
> How do you handle versioning and rollback in serverless functions?
such as using AWS Lambda versions and aliases,
strategies for rolling back to previous versions if needed.
MongoDB
> How does mongodb scale the database
ans > horizonatly
> What is the concept of sharding
> What happen if we have even number of Replica in election when one Replica down
ans > add arbitrary node
> How do you insert a document into a MongoDB collection?
> How do you perform aggregation in MongoDB?
Discuss using the aggregate method and
common stages like $match, $group, $sort, and $project:
> How do you perform text search in MongoDB?
db.myCollection.createIndex({ description: 'text' });
db.myCollection.find({ $text: { $search: 'keyword' } });
> best practices for managing MongoDB performance and reliability?
monitoring with tools such as MongoDB Atlas,
sharding for large datasets,
indexing for query optimization
backups for data recovery.
React >>
>> manage state in a React application
Local Component State: Using useState or this.state in class components.
Context API: For global state management.
State Management Libraries: Such as Redux or Zustand for more complex state nee
>> How do you optimize performance in React applications?
Memoization: Using React.memo and useMemo to prevent unnecessary re-renders.
Code Splitting: Lazy loading components with React.lazy and Suspense.
Avoiding Inline Functions: Creating functions outside of render methods to prevent re-creation on each render.
Virtualization: Using libraries like react-window or react-virtualized for rendering large lists efficiently.
golang
step1
4,7,12,19,28,.......200
(generate this screen in golang)
step2
generate square for odd number
step3
add the square to the mat and calculate the total area occuiped
all three step should have parallel and in finally
package main
type (
Shape interface {
getArea() float64
}
Square struct{
side float64
}
Mat struct{
shapes []Shape
}
tPlaceCh chan Shape
)
func (s *Square) getArea() float64{
return s.side * s.side
}
func (m *Mat) getAreaOccupied() (result float64){
for _, shape := range m.shapes{
result += shape.getArea()
}
return
}
func (m *Mat) place(shape Shape){
m.shapes = append(m.shapes, shape)
}
nodejs
const qs = require('querystring').parse('foo=bar&abc=xyz&abc=123')
how can we access value 123
option
1) qs['abc']['abc']
2) qs[0]['abc']
3) qs['abc'][1]
4) qs['abc'] > correct
mongodb
what is the principle implication of using bulk write operation in MongoDb
1) decreasing performance
2) Increased throughput >> correct
3) Increased data quality
4) increases network traffic
nodejs execute event loop starting from newwst first
microservice nodejs
what happen to deployed microservice when you use the 'service instance per container' deployment pattern
1) they become isolated
2) they share resource
3) they become difficult to scale up or down
4) they are inrestricted in terms of cpu/memory consumption
nodejs
which npm command prints all local packages that need updating
ans > npm outdated
nodejs
how can you modify node's global module search path
ans> set NODE_PATH=C:\path\to\your\global\modules
Javascript
similar strings
two strings are said to be similiar if they are composed of the same character
example "abaca" and "cba" are similiar since both of them composed of character
'a','b','c'
but 'abaca' and 'bcd' are not similiar
given an array of string words of length n, find the number of pairs of string that are
similiar
example
n =3 , words=['xyz','foo','of']
answer = 1
create function countSimilarPairs(word){
}
golang
implement function to merge two sorted link list as
new sorted linklist
golang
we need to refeactor large if statement
using polyomormisum
golang
we need to start http server and define handler and respond with myname
golang
we need to print number from 1 to 10
one go routine will print odd and one even
and print output in correct order
goalng
given three array soretd in non-decreasing order
print all comman element in these array
input
arr1[]= {1,5,10,20,40,80}
arr2[] = {6,7,20,80,100}
arr3[] = {3,4,15,20,70,80,120}
output = 20 ,80
python
React
Cretae todoList user able to add edit and complete and
React
the application has 2 component
file > contains input box and filelist component
fillist > display the list of files and filders an let user add
more files
intial Data:
{
name:src,
isOpen:true,
files:[
{
"name":"App.js"
},
{
name:"component",
"isOpen":false,
"files":[{name:"File.js"}]
}
]
}
requirent
1) inital component should display file folder structure
accorsing to the given intial data
2) there should be + button at the end of every folder
3) clicking a folder shoudl toggle its expansion and chnage the + sign to - sign
on expansion and vice versa
4) clicking a file should do nothing if it does not contain file or a folder
5) Double -clicking a files should make it a folder
6)clicking + button
a) should take afile name from the input box, add it to the require folder and reset
the input box
b) shoudl if thr input box is empty display an alert saying " Please enter file name"
Note: Each item in the list is <li> tag with two items <button> which conatin a <span>
for display + and - and a <ul> for displaying its sub file/folder if any
JavaScript
function test(){
var a = 'a'
(function(){
console.log(a)
return;
var a = 'b'
})()
}
{
company:'HCL',
address:"Noida",
"techno":{
"ui":"opo",
"java":"asd",
"subtechno":{
html:"abc",
css:"frv"
}
}
}
output{
company:'HCL',
address:"Noida",
"techno_ui":"opo",
"techno_java":"asd"
"techno_subtechno_html":"abc",
"techno_subtechno_css":"frv"
}
golang
ping pong app with go routine and gochannel
golang we have connection pool for db clinet
once we get request we fetch client from pool fetch and response
design code for this create dummy client
intilize quantity and max quantiy
if no client available go to max and if go max close
array return most repeated item in an array
const nested = [2,'A',2,['A',4,['A',6,['A',8]]]]
React
A list of clor composed of red and green elements
A "square" component that render a square of a given clor and
execute a click method
implenment a parent component named "App" that:
1. Uses the give square component to render all square from the "color" list
2. Expose the following functionallity
a> Click green => change current element to "red" + add 1 "new "green"
element at the end of the list
b> click red > delete current elemement
react
react component implemnt counyer
golang
implement a procedure and consure using gochannle
producer should generate sires of integr and consumner should
recive from channel and double the integer and return and
shut down the system gracefully
python
write function that recive 2 interga return true f those are equal
else false
list at least 5 non-trivial test case they have to be postivr and negative
python
write a script that gets a urls as argument
makes a ping to the host and append the result to a file
javascript
we have array of object on basis of index user provide
we need to pick value without iteration
javascript
use Destructuring
we have key value pair
try to retrive data from a map structure from a particular index
we have endpoint
write react component and list down the title on order list
https://jsonplaceholder.typicode.com/posts?_limit=10
golang
https://gist.githubusercontent.com/pyPRO2019/dc44ae45f7cfe2f2a34fec30db4678eb/raw/df247df4e11260c669f986d0de589a90459d7e7b/students_data.csv
read data nd find uniqure recored
you are workinh on an edu game platform where iser can access and play edu game to
learn various subject.
Req
1)user should have profile with the basic info like usernmae and email
2)game have various ataribute including title, subject and dicciculty level
3) user can play multiple games and their progres should be tracked for each game
separatley
4) the progress should include info like score achieved and the data of the last playthourgh
5) user should earn achievment in games based on their in-game actions and perfomance . the
achievemnt info includes the achcievemnt name in addition to the date
Task1
design a complerhsive database schema to represent these entires
(user game, progress and achievment) and establish the necesasry relation
between them
task2 sql query
the edu game platforn has gained popularity ans there is a need to
showcase the top- performing
user in each subject based on their overal achievment
the challenge is ti retireve a list of user who have achieved the highest total score in
each subject create a query that return a list containing rhe top-performaing
user in each subject for each subject includes user basic info(usernmae, email)
and total score achieved
task3
y
pagination bug fix:
onserve that there is a bug in pagination where despoite having 16 items
in the list only3 pages are displayed (assume 5 per page) identify and retify
the bug to ensure that the pagination display the correct number of pages
function cretapAgination(){
const totalpage = Math.floor(subjectData.length/itemsPerPage)
const paginationContainer = docuemnt.getElementById('pagination')
paginationContainer.innerJTML = ''
for(let i = 1; i<=totalpages;i++){
const pageLink = document.createElement('li')
pageLink.classList.add('page-item')
pageLink.innerHtml = '<a class="page-link" href="#">${i}<a/>'
pageLink.addEventLisetner('click',()=>{
displaySubjects(i)
window.scrollTo(0,0)
})
paginationContainer.appendChild(pageLink)
}
}
javascript
create pareant and child component
and share data between them using context api
react
test case for counter finction
vue3
'use strict'
console.log(b)
var b = 10
for(var i = 0;i <5;i++){
setTimeout(() => {
console.log(i)
},1000)
}
react
javascript
debounce
javascript
palindrome code
git remote add origin https://aakashdeveloper:[email protected]/Aakashdeveloper/angular18.git
https://github.com/Aakashdeveloper/angular17.git
give a json aaray of onkevt return all object that have key
value that matches a condition
1. build an executable that excetur this list and return all object whose
birthdate contains 1990
2. if necessary extend method to
return all objects who meets additional criterta favorite color = blue
const data = [{
name:'Anne',
birthdate:'01/01/1990',
favcolor:'blue'
}
]
css
what is height of element have content 10px border 1px padding 5px and margin 10px
javascript
write code which handle this senario
1> sum(1,2,3,.....n)
2>sum(1)(2)(3)......(n)
react
make react component
call api with async and await
jsonsplaceholder.typicode.com/users
react native
> how to implment custome animation for user interface transition react native
> to handle third party with react native
> react-native how can we ensure react native app is aceesibiliy to disable perosn
> react-native how to configure to access local db like SQL lite for offline data
> react-native major the perforamce of app
> react-native add feature like accesing camre
> react native approch navigation
python
angular reactive form
design angular folder
with field
1> appname
2> app description
3> Redirect uri
4> Gender and it have male and female
and register button only enable when all value added
sudoku grid validation suggest best algo with step
determine if a 9*9 sudoku board is valid.
Only filled cell need to be validated according to following rules:
1.Each row must contain the digit 1-9 without repetition
2.Each column must contain the digit 1-9 without repetition
3.Eaxh of the nine 3*3 sub-boxes of the grid must contain the
digits 1-9 without repetition
note
sudoku board could be valid but is not necessarily solvable
> only filled cell need to be validated according to the
mention rule
suggest best algo with step
given an m * n matrix board wher each cell is a batteship 'X' or empty '.'
return the numbe of batteship on board
1>batteship can only be placed horizontally or vertically on board
2>in other word they can be made of the shape 1* k (1 row and k columns)
or k *1(k rows and 1 column) where k can be of any size
3> at least one horizontal or vertical cell separateds bewteen two batteship
(ie there are no adjuxt battleship)
golang
get a integer as input and write goroutine, channel
to find sum of cubes
exmple if input is 3
then ouput is 36
python
dict
stocks={
"apple":252.12,
"microsoft":198.11,
"intuit":672.08,
"databrick":112.78,
"yahoo":8.96,
"blackberry":1.2,
}
find the top 3 company and return there name and value
python output
def calc(x,y,/, ope='add'):
if ope == 'add':
return x+y
elif ope == 'sub':
return x-y
elif ope == 'mul':
return x*y
elif ope == 'divide':
return x/y
else:
raise ValueError('invalid operation')
result = calc(x=7,y=2,ope='mul')
python
can you simple class which has class method and instance method
javascript
const getUser = () => {
return new Promise(resolve => {
resolve(
[
{id:1,name:'Jack'},
{id:2,name:'John'},
{id:3,name:'Mike'}
]
)
})
}
const getUserStatuse = () => {
return new Promise(resolve => {
resolve(
[
{id:1,isActive:true},
{id:2,isActive:true},
{id:3,isActive:false}
]
)
})
}
map both of them on basis of id
javascript
setTimeOut(() => {
console.log(1)
},0)
console.log(3)
Promise.resolve(4).then(console.log)
new Promise((resolve,reject) => {
console.log(5)
reject(6)
}).catch(error => {
console.log(error)
})
typescript
any vs unkown
angular
directive vs component
test case jest handle userinput and make backend call
const searchInput = document.querySelector('#search-input')
fromEvent(searchInput, 'keyup').pipe(
/* Write code here*/
).subscribe()
ios
func divideLoot(
people:Int,
fairly:Bool) -> string{
var output;
string = "we're going to split.....\n"
if fairly{
output += "Everyone get 1/\"
}
return output
}
print(divideLoot(people:5, fairly))
)
sql query
what is having and where clause
const arr= [
{name:'Alex',age:25},
{name:'Bob',age:30},
{name:'Alex',age:25},
]
groupedBy(arr,age)
output
{
25:[
{name:'Alex',age:25},
{name:'Alex',age:25},
],
30:[{name:'Bob',age:30}]
}
javascript
const arr = [1,4,2,10,15]
create function to find larget element in array
find nth larget
javascript
string is palindrome code if we have remove 1 or less char
example
//"abcbda" -> true
//"desbacbe" -> false
//dabcba"> true
//"asdfghj"> false
javascript
on the basis of output understand the function and write
input = "this is a test sentence"
output:[t,h,i,s,i,s,a,t,e,s,t,s,e,n,t,e,n,c,e]
input = "thiis iss a teest seentennce"
output:[i,s,e,e,n]
input = "thiiis iss a teeest seentennncce"
output:[i,e,n]
we have 3 component compa,b,c, we need where c is actual view component I what design where compA render insider component b
will render 3 time im component A use children porps
JavaScript
write function take an array and revere the array and return new array
React
we have 2 category closet and Suitcase
closet have few item display in terms of card
Suitcase have few item
every item have move button on click of that
if item in closet will move to Suitcase div
and vice versa
golang
we need to attempt the sorta list of flight based on their price
from high to low
20,30,50,100
you will implement the sortByPrice function that take in a slice of
type flight and return the sorted list of flight
in order to help you see what is going you hav been provided a very quick
prtint flight function which you can use to print the fligh out
javascript
const people : Person[]= [
{name:'abc', age:30},
{name:'def', age:25},
{name:'pqe', age:35}
]
react
given react component that display a list of a
grocery item each wit a name cost and quantity complete the following task:
1) implement the logic for button that increaase and decrease the quantity of each item
2) Dipaky the total cost of all items based on their quantity and const
3) Add a input field for the user to set their budget when total cost
exceed the budget log the amount by which the total cost exceed the busget
css
make a red circle red backgroudn in center of page or div
given a collection of candidate numbers (candidates)
and a target number (target)
wriet a function combinationSum2 to find all unique
combination of candiates where choosen number
sum to target. Each number in candiates may only be used
once in the combination
input combinationSum2([10,1,2,7,6,5], 9)
output [[1,2,5],[1,7],[2,6]]
var x = 0;
for (let i =0;i<5;i++){
setTimeout(() => {
x++;
console.log(x)
},1000)
}
console.log(x)
let obj1 = {key:"value"};
let obj2 = obj1
let obj3 = obj2
obj1.key = 'new Value'
obj2 = {key: "another value"}
console.log(obj1.key, obj2.key, obj3.key)
python
function to add 2 nuber
python
check palindorm
given sting s conating just the characters '(',')','{','}','[',']'
input is valid if
1) open barcket must be cloase by the same type of brakcet
2) open bracket must be closed in the correct order
3) Every close brakcet has ca cooresponding opne bracket of the same type
tableA: Device_id, device_status= connect,not conncetc,device_type= samsung , motorola
SQL
tableB: device_id, snapshot_date, record_status = 'Update','Delete',"Insert"
write query to find count of record for snapshot date on basis of record status
SQL
tableB: device_id, snapshot_date, record_status = 'Update','Delete',"Insert"
write query to delete 2 record and keep 1
create a single todo app using reactjs
Same data local state management
each todo item will have description , due date,
status, completed/cancelled date,
handle form validation for required field
order the todo item based on due date in increasing order
wen and item marked as completeded or cancelled move them to
bottom of the page of todo List
Apply appropitae styling to the page using css
React (typescrit) pool manager
design pool manger app that allow users to
vote one of the two option and view the winner
the app should be built using React + typescript
App the 3 comoponnent pollmanager , vote and results
vote component
> display text of ecah option
> procide a vote burron fro each option
> disable vote button for each option whne the winner is declared
Result component
> display the result text based on the
> if no vote cast show empty
> if same number of vote show tie
> if one has extr then sow leaser is leading by vote diff
view winner
> if no vote cast button disabled
> clicking winner button
display resukt text "it is a tie" if same number of vote
if one has extr then sow leaser is leading by vote diff
disable the view winner button
disable votr button for each option
poll manager
>>display poll Question
> manage state of the poll incduing vote and winner status
> pass the relevent data and function to the vote and result component
in vote component
interface VoteProps{
options: PollOption[];
onVote:(optionId: number) =>void;
viewwinner: boolea
}
export interface PollOption{
id:number
text:string;
votes:number
}
export interface Poll{
question:string
options:PollOption
}
python
given two nodes on atree find the first ancestor they have in
common Nodes have pointers to their parent and their childern
python
we have a game in which consecuitve duplicates pieces of the same type
cancel each other out and remaining pieces slide in until no more pieces can be removed
Give a board resprestn by string return the final state of the board after playing the game
input = "abbba"
output:"" ("abbba" => "aa" => "")
input = "ab"
output = "ab"
golang
package main
import {
"log"
"net/http"
}
implement
//get /rules (list all rules)
//post (/rules) (insert a single rule)
type FirewallRue struct{
VMID uint64 `json:"vm_id"`
Direaction string `json:"direaction"`
Source string `json:"Source"`
Destination string `json:"Destination"`
Protcol string `json:"Protcol"`
Port int `json:"Port"`
}
func main(){
database := make(map[unint64]* FirewallRue)
database[1] = &FirewallRule{VMID:1}
r: http.NewServeMux()
r.HandleFunc("GET"){
}
}
s:= &http.Server{
Addr: ":3000",
Handler: r
}
function fn(){...}
// functional component
function form(){
// call fn whrn form unmount
}
output
const olObj = {
contant:{
email:"old_email"
}
}
const newObj = {
...oldObj
}
console.log(oldObj.contact.email)
console.log(newObj.contact.email)
output
javascriot
how do you promidify th delay function ?
it should print
const delay = () => setTimeOut(() => {
console.log('timeout')
})
async function main(){
console.log('start')
await delay;
console.log('finish')
}
main()
it should print start,timeout, finish and make sure it run asynchronously
jacascript
what is missing
what do you need to define name and age when intasniting the person class?
class Person{
name = "",
age = 0
}
const John = new Person('a',10)
given this array of users can you implement the getActiveUserWithCat return active use with cat
input=[
{name:"a",isActive:false,hasTrue:true},
{name:"b",isActive:true,hasTrue:true},
{name:"c",isActive:true,hasTrue:false},
{name:"d",isActive:true,hasTrue:true}
]
golang
there are 2 golang routine one is producer
other is consumer once it recive it will send acknolwdgement and then
producer will send new mesaage
in case of 10 sec delay in acknolwdgement it will end bot goroutine
output of javascript code
const makeMap = () => {
const parks = new Map()
parkse.set("uinversla",{name:"USF",age:30});
parks.set("disney",{name:"magic",age:40})
parks.set("uinversla",{name:"IOA",age:50})
console.log(JSON.stringify(parks))
}
function sumArray(array:number[]){
let sum = 0;
for(let i = 1 ; i<array.length;i++){
sum +=array[i]
}
return sum
}
javascript
implement a function to find the sum of number without any loop
arr = [1,2,3,4,5]
javascript
"A"-1
2+"-2"+"2"
"Hello"-"World"+78
React creates simple component
counter for increase and decearese and dipslay ouput
There is a string length N made only of the letter 'a'
whenever there are two identical adjusted letter like 'aa'
they can be transformed into a single letter that is the next
letter of the alphabet.
like 'aa' transformed to 'b' and 'ee' will be transformed to 'f'
and 'zz' cannot be further transformed
what is the alphabet large string that can be obtained from the initial
string?
function soluiton (N)
example
N = 11 function should return 'dba';
'aaaaaaaaaaa' => 'bbbbba' => 'ccba' => 'dba'