43 lines
1,016 B
Rust
43 lines
1,016 B
Rust
extern crate rand; // 0.10.0 used
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use rand::prelude::*;
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// Color enums will be sorted by their top-to-bottom declaration order
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#[derive(Eq,Ord,PartialOrd,PartialEq,Debug)]
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enum Color {
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Red,
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White,
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Blue
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}
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fn is_sorted(list: &Vec<Color>) -> bool {
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let mut state = &Color::Red;
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for current in list.iter() {
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if current < state { return false; }
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if current > state { state = current; }
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}
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true
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}
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fn main() {
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let mut rng = rand::rng();
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let mut colors: Vec<Color> = Vec::new();
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for _ in 1..10 {
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let r = rng.random_range(0..3);
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if r == 0 { colors.push(Color::Red); }
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else if r == 1 { colors.push(Color::White); }
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else if r == 2 { colors.push(Color::Blue); }
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}
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while is_sorted(&colors) {
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colors.shuffle(&mut rng);
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}
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println!("Before: {:?}", colors);
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colors.sort();
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println!("After: {:?}", colors);
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if !is_sorted(&colors) {
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println!("Oops, did not sort colors correctly!");
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}
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}
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