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Deven
2025-11-26 14:24:59 -05:00
parent f6089b1e84
commit 3399d5f921
1 changed files with 6 additions and 2 deletions
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0073-set-matrix-zeroes/0073-set-matrix-zeroes.py
+6 -2
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@@ -3,18 +3,22 @@ class Solution:
""" """
Do not return anything, modify matrix in-place instead. Do not return anything, modify matrix in-place instead.
""" """
# Total complexities:
# O(mn) time
# O(m+n) space
# O(m+n) space # O(m+n) space
rowsToZero = set() rowsToZero = set()
colsToZero = set() colsToZero = set()
# Find all zeros # Find all zeros - O(mn)
for i in range(len(matrix)): for i in range(len(matrix)):
for j in range(len(matrix[i])): for j in range(len(matrix[i])):
if matrix[i][j] == 0: if matrix[i][j] == 0:
rowsToZero.add(i) rowsToZero.add(i)
colsToZero.add(j) colsToZero.add(j)
# Zero rows and cols as needed # Zero rows and cols as needed - O(mn)
for i in range(len(matrix)): for i in range(len(matrix)):
for j in range(len(matrix[i])): for j in range(len(matrix[i])):
if i in rowsToZero or j in colsToZero: if i in rowsToZero or j in colsToZero: