https://github.com/floriank/57-exercises-elixir
my take on https://pragprog.com/book/bhwb/exercises-for-programmers - Elixir edition
https://github.com/floriank/57-exercises-elixir
Last synced: 3 months ago
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my take on https://pragprog.com/book/bhwb/exercises-for-programmers - Elixir edition
- Host: GitHub
- URL: https://github.com/floriank/57-exercises-elixir
- Owner: floriank
- License: mit
- Created: 2016-02-17T15:22:50.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2016-03-07T10:35:23.000Z (over 9 years ago)
- Last Synced: 2025-02-27T18:44:21.689Z (3 months ago)
- Language: Elixir
- Size: 3.85 MB
- Stars: 2
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# 57 exercises for programmers - Elixir
This is the base repository for my take on the [book 57 exercises](https://pragprog.com/book/bhwb/exercises-for-programmers) for programmers. This is done to keep record of all the exercises I've done to increase my fluency in [Elixir](https://elixir-lang.org).
For some of these execises I used dependencies (it's cumbersome to do HTTP requests or JSON parsing without a library), so make sure to run
```
mix deps.get
```
List of exercises
=================
### 01. Saying Hello - simple output
```
mix run 01-saying-hello.exs
```
Simple "Hello World" with no special constraints.
### 02. Counting characters - String operations
```
mix run 02-counting-characters
```
Simple output with String operations.
### 03. Printing quotes
```
mix run 03-printing-quotes
```
Simple test for String concatenation without interpolation and escaping quotes
### 04. Mad Libs - Dealing Multiple inputs
```
mix run 04-mad-libs.exs
```
Concatenating multiple inputs.
### 05. Simple math
```
mix run 05-simple-math.exs
```
Do simple math operations while sanitizing and converting user input.
### 06. Retirement Calculator
```
mix run 06-retirement-calculation.exs
```
Simple math in combination with basic DateTime functionality.
### 07. Rectangular Room
```
mix run 07-recatngular-room.exs
```
Calculating an area while using conversion.
### 08. Pizza Party
```
mix run 08-pizza-party.exs
```
Calculate the number of slices from a pizza (remainder division)
### 09. Paint calculator
```
mix run 09-paint-calculator.exs
```
Given the area of a room, calculate the number of buckets needed to cover the rooms area with paint.
### 10. Item checkout
```
mix run 10-item-checkout.exs
```
Implement a calculation for arbitrary items during checkout (e.g. at a super market).
### 11. Currency exchange
```
mix run 11-currency-exchange.exs
```
Implement a calculation for arbitrary items during checkout (e.g. at a super market), optionally using the OpenExchangeRates API.
### 12. Computing interest
```
mix run 12-computing-interest.exs
```
Computes the simple interest value over a number of years:
Challenges:
- Ensure that the values entered for principal, rate, and number of years are numeric
- Calculate the end value of the investment
- print the amount at the end of each year
### 13. Computing compound interest
```
mix run 13-computing-compound-interest.exs
```
Computes compound interest over a number of years.
### 14. Tax calculator
```
mix run 14-tax-calculator.exs
```
A simple program that checks for the users state and displays a total amount in- or excluding tax.
### 15. Validating passwords
```
mix run 15-validating-passwords.exs
```
Simple password validation to test if/else branches.
### 16. Legal driving age
```
mix run 16-legal-driving-age.exs
```
Asks the user for their age and then decides if they're old enough to drive.
### 17. Blood alcohol calculator
```
mix run 17-blood-alcohol-calculator.exs
```
Asks the user for their body measurements and drinks had and decides whether or not they are allowed to drive.
### 18. Temperature converter
```
mix run 18-temperature-converter.exs
```
Simple temperature conversion between Fahrenheit and Celsius. Uses an input loop.
### 19. BMI calculator
```
mix run 19-bmi-calculator.exs
```
Given measurements of a person, calculate their BMI (Body mass index).
### 20. Multistate Tax Calculator
```
mix run 20-multistate-tax-calculator.exs
```
Calculate tax rates for different states in the US, with some branching options for different counties.
### 21. Numbers to names
```
mix run 21-numbers-to-names.exs
```
Converts numbers to month names.
### 22. Comparing number
```
mix run 22-comparing-numbers.exs
```
Compares three numbers and findest the highest one.
### 23. Troubleshooting cars
```
mix run 23-troubleshootings-cars.exs
```
A simple implementation of a decision making tree with multiple questions.
### 24. Anagrams
```
mix run 24-anagrams.exs
```
A small program to compare two inputs to see if they are anagrams of each other.
### 25. Password strength checker
```
mix run 25-password-strength.exs
```
A program to check the strength of a given password.
### 27. Validating inputs
```
mix run 27-validating-input.exs
```
Use validation functions to sanitize user inputs
### 28. Adding numbers
```
mix run 28-adding-numbers.exs
```
A program to add several numbers together.
### 29. Handling bad input
```
mix run 29-bad-input.exs
```
A program dealing with the handling of a bad input to a simple question.
### 30. Multiplication table
```
mix run 30-multiplication-table
```
A program that displays a multiplication table for a given number.
### 31. Karvonen Heart rate
```
mix run 31-heart-rate.exs
```
A program to display heart rate information in a table.
### 32. Gues the number
```
mix run 32-guess-the-number.exs
```
A game to guess a number - for doing infinite game loops.
### 33. Magic 8 Ball
```
mix run 33-magic-eight-ball.exs
```
A magic 8 ball!
### 34. Employee list removal
```
mix run 34-employee-list-removal.exs
```
A simple list edit on a fixed list.
### 35. Picking a winner
```
mix run 35-picking-a-winner.exs
```
A program to randomly pick an item from a list generated of inputs.
### 36. computing statistics
```
mix run 36-computing-statistics.exs
```
Ask the user for a set of numbers until they are 'done'. Then compute a set of numbers from the initial set.
### 37. Password generator
```
mix run 37-password-generator.exs
```
A password generation tool
### 38. Filtering values
```
mix run 38-filtering-values.exs
```
Asks the user for a list of values, then filter out the numbers based on a criterium.
### 39. Sorting records
```
mix run 39-sorting-records.exs
```
Given a list of initial records, sort them by a given field. Does _not_ contain the MySQL (i.e. database connected) version, as the sorting would then have to be done on the db side.
### 40. Filtering records
```
mix run 40-filtering-records.exs
```
Given a list of records, filter out records based on a given string and dsiplay them as a table
### 41. Name sorting
```
mix run 41-name-sorting.exs
```
Reads in a list of names from a file and sorts them alphabetically.
### 42. Data parsing
```
mix run 41-data-parsing.exs
```
Reads in a CSV file with a custom built algorithm, then displays it's contents as a table.
### 43. Website generator
```
mix run 43-website-generator.exs
```
Simple generator to create a folder with files.
### 44. Product search
```
mix run 44-product-search.exs
```
A search over a static json file. Since Elixir has no native json support, Poison is used.
### 45. Word finder
```
mix run 45-word-finder.exs
```
A search and repalce for the content of a given file.
### 46. Word frequency
```
mix run 46-word-frequency.exs
```
A program to count word occurences - the default version uses a text provided in `./files`. the exercises also states it should be tests with a longer text, e.g. [this one](http://www.gutenberg.org/cache/epub/100/pg100.txt) - A compressed file for usage was added - Elixir supports the reading of compressed files on the fly.
### 47 - Who is in space?
```
mix run 47-who-is-in-space.exs
```
A program that calls the [OpenNotify API](http://api.open-notify.org/astros.json) and lists the results in the terminal.
### 48. Grabbing the weather
```
OWM_KEY= mix run 48-grabbing-the-weather.exs
```
Grabs the location of the user and then tries to get weather information based on that location from [OpenWeatherMap](http://openweathermap.org).