src/bin/rings-and-rods.rs

Author: bestgopher

src/bin/rings-and-rods.rs

@@ -0,0 +1,24 @@
+#![allow(dead_code, unused, unused_variables, non_snake_case)]
+
+fn main() {}
+
+struct Solution;
+
+impl Solution {
+    pub fn count_points(rings: String) -> i32 {
+        let mut v = vec![0; 10];
+
+        for i in (0..rings.len()).filter(|x| x % 2 == 1) {
+            let x: u8 = match rings.as_bytes()[i - 1] {
+                b'R' => 0b001,
+                b'G' => 0b010,
+                b'B' => 0b100,
+                _ => unreachable!(),
+            };
+
+            v[(rings.as_bytes()[i] - b'0') as usize] |= x;
+        }
+
+        v.into_iter().filter(|x| *x & 0b111u8 == 0b111u8).count() as i32
+    }
+}