20240503 Finished

src/problem/mod.rs

@@ -120,3 +120,4 @@ mod p76_minimum_window_substring;
 mod p36_valid_sudoku;
 mod p54_spiral_matrix;
 mod p48_rotate_image;
+mod p73_set_matrix_zeroes;

src/problem/p73_set_matrix_zeroes.rs

@@ -0,0 +1,75 @@
+/**
+ * [73] Set Matrix Zeroes
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn set_zeroes(matrix: &mut Vec<Vec<i32>>) {
+        let m = matrix.len();
+        let n = matrix[0].len();
+
+        let mut width_empty = false;
+        let mut height_empty = false;
+
+        for i in 0..m {
+            if matrix[i][0] == 0 {
+                height_empty = true;
+            }
+        }
+
+        for j in 0..n {
+            if matrix[0][j] == 0 {
+                width_empty = true;
+            }
+        }
+
+        for i in 1..m {
+            for j in 1..n {
+                if matrix[i][j] == 0 {
+                    matrix[i][0] = 0;
+                    matrix[0][j] = 0;
+                }
+            }
+        }
+
+        for i in (1..n) {
+            if matrix[0][i] == 0 {
+                for j in 0..m {
+                    matrix[j][i] = 0;
+                }
+            }
+        }
+
+        for i in 1..m {
+            if matrix[i][0] == 0 {
+                for j in 0..n {
+                    matrix[i][j] = 0;
+                }
+            }
+        }
+
+        if width_empty {
+            for j in 0..n {
+                matrix[0][j] = 0;
+            }
+        }
+
+        if height_empty {
+            for i in 0..m {
+                matrix[i][0] = 0;
+            }
+        }
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_73() {}
+}