# 73. Set Matrix Zeroes
"""
given an 'm x n' integer 'matrix', if an element is '0', set its entire row
and columns to '0's. you must do it in place
"""
class Solution(object):
def setZeroes(self, matrix):
"""
:type matrix: List[List[int]]
:rtype: None Do not return anything, modify matrix in-place instead.
"""
r, c = 0, 0
for i in range(len(matrix)):
for j in range(len(matrix[i])):
if matrix[i][j] == 0:
r |= 1 << i
c |= 1 << j
for i in range(len(matrix)):
for j in range(len(matrix[i])):
if r & 1 << i or c & 1 << j:
matrix[i][j] = 0
if __name__ == "__main__":
obj = Solution()
m1 = [[1, 1, 1], [1, 0, 1], [1, 1, 1]]
m2 = matrix = [[0, 1, 2, 0], [3, 4, 5, 2], [1, 3, 1, 5]]
obj.setZeroes(m1)
obj.setZeroes(m2)
print(m1)
print(m2)
