https://github.com/4t145/tsuki-permutation

https://github.com/4t145/tsuki-permutation

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/4t145/tsuki-permutation
• Owner: 4t145
• Created: 2023-09-04T09:42:25.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-09-29T07:42:55.000Z (over 1 year ago)
• Last Synced: 2024-04-20T09:01:30.469Z (9 months ago)
• Language: Rust
• Size: 12.7 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
It's a lib for represent and caculate permutation

```rust

let p = perm![1, 2, 0];

let q = perm![2, 1, 0];

// unit element of S3 group

let e3 = perm![@3];

assert_eq!(&e3 + &p, p);

assert_eq!(&p + &e3, p);

assert_eq!(&p * 3, e3);

assert_eq!(&p * 2, &e3 - &p);

dbg!(p);

assert_eq!(p.parity(), Parity::Even);

assert_eq!((&p + &p).parity(), Parity::Even);

assert_eq!((&q + &q).parity(), Parity::Even);

assert_eq!((&q + &p).parity(), Parity::Odd);

assert_eq!((&p + &q).parity(), Parity::Odd);

```