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main.rs
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main.rs
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fn main() {
let mut s = Solver {
expected: Trinity { a: 1, b: 2, c: 3 },
unsolved: vec![
Trinity { a: 1, b: 2, c: 3 },
Trinity { a: 2, b: 1, c: 3 },
Trinity { a: 2, b: 3, c: 1 },
Trinity { a: 3, b: 1, c: 2 },
],
};
s.resolve();
println!("{:?}", s)
}
#[derive(Clone, Debug, PartialEq)]
struct Trinity<T> {
a: T,
b: T,
c: T,
}
impl<T: Clone> Trinity<T> {
fn rotate(&mut self) {
let a = self.a.clone();
let b = self.b.clone();
let c = self.c.clone();
self.a = b;
self.b = c;
self.c = a;
}
}
#[derive(Debug)]
struct Solver<T> {
expected: Trinity<T>,
unsolved: Vec<Trinity<T>>,
}
impl<T: Clone + PartialEq> Solver<T> {
fn resolve(&mut self) {
let mut unsolved = Vec::with_capacity(self.unsolved.len());
'l: for t in self.unsolved.iter_mut() {
for _ in 0..3 {
if *t == self.expected {
continue 'l;
}
t.rotate();
}
unsolved.push(t.clone())
}
self.unsolved = unsolved;
}
}