finish 12

src/euler12/benches/benchmark.rs

@@ -0,0 +1,14 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+
+use triangle::factorize;
+
+fn bench_factorize(c: &mut Criterion) {
+    c.bench_function("factorize solution", |b| {
+        b.iter(|| {
+            factorize(76576500);
+        })
+    });
+}
+
+criterion_group!(benches, bench_factorize);
+criterion_main!(benches);