2016/15

2016/15/src/main.rs

@@ -0,0 +1,53 @@
+use std::usize;
+
+
+pub fn calculate_time(discs: &Vec<(usize, usize)>) -> Result<usize, ()> {
+    'main: for t in 0..usize::MAX {
+        for (i, &(p, m)) in discs.iter().enumerate() {
+            if (t + i + 1 + p) % m != 0 {
+                continue 'main;
+            }
+        }
+
+        return Ok(t);
+    }
+
+    Err(())
+}
+
+
+fn main() {
+    let time_1 = calculate_time(&vec![
+        (2, 5),
+        (7, 13),
+        (10, 17),
+        (2, 3),
+        (9, 19),
+        (0, 7)
+    ]);
+
+    println!("time_1={:?}", time_1);
+
+    let time_2 = calculate_time(&vec![
+        (2, 5),
+        (7, 13),
+        (10, 17),
+        (2, 3),
+        (9, 19),
+        (0, 7),
+        (0, 11)
+    ]);
+
+    println!("time_2={:?}", time_2);
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn example_01() {
+        assert_eq!(Ok(5), calculate_time(&vec![(4, 5), (1, 2)]));
+    }
+}