A few problems

rotate-image/sol.rs

@@ -0,0 +1,16 @@
+impl Solution {
+    pub fn rotate(matrix: &mut Vec<Vec<i32>>) {
+        let n = matrix.len() - 1;
+        for y in 0..matrix.len()/2 {
+            for x in y..matrix.len()-1-y {
+                let mut a = matrix[y][x];
+                matrix[y][x] = matrix[n-x][y];
+                let mut b = matrix[x][n-y];
+                matrix[x][n-y] = a;
+                a = matrix[n-y][n-x];
+                matrix[n-y][n-x] = b;
+                matrix[n-x][y] = a;
+            }
+        }
+    }
+}