https://github.com/romalev/rx-packer
Solving packaging challenge. See README for more details.
https://github.com/romalev/rx-packer
algorithm-challenges concurrency concurrent-programming java8 mvn rxjava2
Last synced: 6 months ago
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Solving packaging challenge. See README for more details.
- Host: GitHub
- URL: https://github.com/romalev/rx-packer
- Owner: romalev
- Created: 2017-12-04T16:14:10.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2017-12-11T15:10:29.000Z (about 8 years ago)
- Last Synced: 2025-06-17T07:47:53.780Z (9 months ago)
- Topics: algorithm-challenges, concurrency, concurrent-programming, java8, mvn, rxjava2
- Language: Java
- Homepage:
- Size: 52.7 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
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README
***Package Challenge***
-
**Introduction**
Imagine you want to send your friend a package with different things.
Each thing you put inside the package has such parameters as index number, weight and cost. The
package has a weight limit. Goal is to determine which things to put into the package so that the
total weight is less than or equal to the package limit and the total cost is as large as possible.
You would prefer to send a package which weights less in case there is more than one package with the
same price.
**Input sample**
Program accepts as its first argument a path to a filename. The input file contains several
lines. Each line is one test case.
Each line contains the weight that the package can take (before the colon) and the list of things you
need to choose. Each thing is enclosed in parentheses where the 1st number is a thing's index number,
the 2nd is its weight and the 3rd is its cost.
E.g.
`81 : (1,53.38,€45) (2,88.62,€98) (3,78.48,€3) (4,72.30,€76) (5,30.18,€9)
(6,46.34,€48) `
`8 : (1,15.3,€34)`
`75 : (1,85.31,€29) (2,14.55,€74) (3,3.98,€16) (4,26.24,€55) (5,63.69,€52)
(6,76.25,€75) (7,60.02,€74) (8,93.18,€35) (9,89.95,€78)`
`56 : (1,90.72,€13) (2,33.80,€40) (3,43.15,€10) (4,37.97,€16) (5,46.81,€36)
(6,48.77,€79) (7,81.80,€45) (8,19.36,€79) (9,6.76,€64)`
**Output sample**
For each set of things that you put into the package provide a list (items’ index numbers are separated
by comma). E.g.
`4`
--
`2,7`
`8,9`
_Additional constraints:_
1. Max weight that a package can take is ≤ 100
2. There might be up to 15 items you need to choose from
3. Max weight and cost of an item is ≤ 100
**Notes**
RxJava is considered as backbone to drive the solution for task described above.
_Things to be improved:_
* utilize the power of eclipse collection.
* Read a file in a truly async way.