[Add] Leetcode > 73. Set Matrix Zeroes

Author: Joie-Kim

Leetcode/set_matrix_zeroes.py

@@ -0,0 +1,21 @@
+# 73. Set Matrix Zeroes
+
+class Solution:
+    def setZeroes(self, matrix: List[List[int]]) -> None:
+        """
+        Do not return anything, modify matrix in-place instead.
+        """
+        m = len(matrix)
+        n = len(matrix[0])
+        zero_arr = []
+        
+        for i in range(m):
+            for j in range(n):
+                if matrix[i][j] == 0:
+                    zero_arr.append((i, j))
+        
+        for (x, y) in zero_arr:
+            for j in range(n):
+                matrix[x][j] = 0
+            for i in range(m):
+                matrix[i][y] = 0