weighted_rand 0.1.0

A weighted random sampling crate using Walker's Alias Method.
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# weighted_rand


A weighted random sampling crate using Walker's Alias Method.

## Example


```rust
use weighted_rand::builder::WalkerTableBuilder;

fn main() {
    let fruit = ["Apple", "Banana", "Orange", "Peach"];

    // The weights of the output indexes.
    // The higher the weight, the more likely the corresponding index will be
    // output.
    // In the following case, the output probabilities for each index are 0.2,
    // 0.1, 0.7 and 0. If a weight value is 0, the corresponding index will not
    // be output. In other words, the index 3 will not be output in this case.
    let index_weights = vec![2, 1, 7, 0];

    let mut builder = WalkerTableBuilder::new(index_weights);
    let wa_table = builder.build().unwrap();

    for _ in 0..10 {
        let i = wa_table.next(); // Will output 0, 1, or 2
        println!("{}", fruit[i]);
    }
}
```

## License


Licensed under either of

- Apache License, Version 2.0
  ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license
  ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)

at your option.

## Contribution


Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.