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June 2018 Update

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Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
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Task/Pythagorean-triples/Rust/pythagorean-triples.rust Normal file
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use std::thread;
fn f1 (a : u64, b : u64, c : u64, d : u64) -> u64 {
let mut primitive_count = 0;
for triangle in [[a - 2*b + 2*c, 2*a - b + 2*c, 2*a - 2*b + 3*c],
[a + 2*b + 2*c, 2*a + b + 2*c, 2*a + 2*b + 3*c],
[2*b + 2*c - a, b + 2*c - 2*a, 2*b + 3*c - 2*a]] .iter() {
let l = triangle[0] + triangle[1] + triangle[2];
if l > d { continue; }
primitive_count += 1 + f1(triangle[0], triangle[1], triangle[2], d);
}
primitive_count
}
fn f2 (a : u64, b : u64, c : u64, d : u64) -> u64 {
let mut triplet_count = 0;
for triangle in [[a - 2*b + 2*c, 2*a - b + 2*c, 2*a - 2*b + 3*c],
[a + 2*b + 2*c, 2*a + b + 2*c, 2*a + 2*b + 3*c],
[2*b + 2*c - a, b + 2*c - 2*a, 2*b + 3*c - 2*a]] .iter() {
let l = triangle[0] + triangle[1] + triangle[2];
if l > d { continue; }
triplet_count += (d/l) + f2(triangle[0], triangle[1], triangle[2], d);
}
triplet_count
}
fn main () {
let new_th_1 = thread::Builder::new().stack_size(32 * 1024 * 1024).spawn (move || {
let mut i = 100;
while i <= 100_000_000_000 {
println!(" Primitive triples below {} : {}", i, f1(3, 4, 5, i) + 1);
i *= 10;
}
}).unwrap();
let new_th_2 =thread::Builder::new().stack_size(32 * 1024 * 1024).spawn (move || {
let mut i = 100;
while i <= 100_000_000_000 {
println!(" Triples below {} : {}", i, f2(3, 4, 5, i) + i/12);
i *= 10;
}
}).unwrap();
new_th_1.join().unwrap();
new_th_2.join().unwrap();
}