Combination

what it is

combination is a lib to do math jobs like permutate and combinate data from vec.

example

```rust extern crate combination; use combination::*;

[test]

[cfg(test)]

fn test_permutation() { let data = vec![10, 20, 30, 40]; let val = permutate(&data); for item in val { println!("{:?}", item); } } ```

API

combine

Get combination data from a vec

• for example

rust use combination::*; let val = combine(&vec![10, 20, 30, 40], 2); for item in val { println!("{:?}", item); }

• and will get:

[10, 20] [10, 30] [10, 40] [20, 30] [20, 40] [30, 40]

permutate

Get permutation data from a vec

• for example

rust extern crate combination; use combination::*; let val = permutate(&vec![10, 20, 30, 40]); for item in val { println!("{:?}", item); }

• and will get:

[30, 10, 40, 20] [30, 10, 20, 40] [40, 10, 30, 20] [10, 40, 30, 20] [10, 30, 40, 20] [10, 30, 20, 40] [40, 10, 20, 30] [10, 40, 20, 30] [10, 20, 40, 30] [10, 20, 30, 40] [40, 30, 20, 10] [30, 40, 20, 10] [30, 20, 40, 10] [30, 20, 10, 40] [40, 20, 30, 10] [20, 40, 30, 10] [20, 30, 40, 10] [20, 30, 10, 40] [40, 20, 10, 30] [20, 40, 10, 30] [20, 10, 40, 30] [20, 10, 30, 40]