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#![allow(unused)]
#![deny(missing_docs)]
mod ga;
pub use ga::*;
#[cfg(test)]
mod tests {
use super::ga::*;
use rand::Rng;
fn random() -> f64 {
rand::thread_rng().gen()
}
fn radint(num: usize) -> usize {
((num as f64) * random()) as usize
}
fn rex(start: usize, end: usize) -> usize {
start + radint(end - start)
}
const TARGET: [char; 20] = ['T', 'o', ' ', 'b', 'e', ',',
' ', 'o', 'r', ' ', 'n', 'o', 't', ' ', 't', 'o', ' ', 'b', 'e', '.'];
use std::iter::once;
fn random_char() -> char {
(rex(32, 122) as u8) as char
}
struct Gene {
text: [char; 20]
}
impl Genome for Gene {
fn new() -> Self {
let mut text = [0u8 as char; 20];
for i in 0..20 {
text[i] = random_char();
}
Self { text }
}
fn fitness(&self) -> f64 {
2f64.powf((0..20).map(|i| ((self.text[i] == TARGET[i]) as usize) as f64).sum())
}
fn cross(&self, other: &Self) -> Self {
let mut text = [0u8 as char; 20];
for i in 0..20 {
text[i] = match radint(2) {
0 => self.text[i],
1 => other.text[i],
_ => random_char()
}
}
Self { text }
}
fn mutate(mut self) -> Self {
for i in 0..20 {
if random() < 0.01 {
self.text[i] = random_char();
}
}
self
}
fn display(&self) {
let display_text: String = self.text.iter().cloned().collect();
println!("{}", display_text);
}
}
#[test]
fn test_shakespear() {
let mut population: Population<Gene> = Population::new(100);
for i in 0..1000 {
population.live();
population.next_generation();
}
}
}