Combinations and permutations: Difference between revisions
→{{header|Rust}}
Line 3,214:
<syntaxhighlight lang="rust">
fn perm(n: f64, k: f64) -> f64 {
let mut result: f64 = 1.0;
let mut i: f64 = 0.0;
while i < k {
result *= n - i;
i += 1.0;
}
result
}
fn comb(n: f64, k: f64) -> f64 {
perm(n, k) / perm(k, k)
}
fn main() {
const P: f64 = 12.0;
const C: f64 = 60.0;
let mut j: f64 = 1.0;
let mut k: f64 = 10.0;
while j < P {
println!("P({},{}) = {}", P, j, perm(P, j).floor());
j += 1.0;
}
while k < C {
println!("C({},{}) = {}", C, k, comb(C, k).floor());
k += 10.0;
}
}
</syntaxhighlight>
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