2023.12.16 Today's Challenge

https://leetcode.com/problems/difference-between-ones-and-zeros-in-row-and-column/?envType=daily-question&envId=2023-12-14

Difference Between Ones and Zeros in Row and Column - LeetCode

문제가 이해가 잘 안되서 일단 패스..!

class Solution:
    def onesMinusZeros(self, grid: List[List[int]]) -> List[List[int]]:
        m, n = len(grid), len(grid[0])
        row_ones = [0] * m
        col_ones = [0] * n

        for i in range(m):
            for j in range(n):
                row_ones[i] += grid[i][j]
                col_ones[j] += grid[i][j]
        
        for i in range(m):
            for j in range(n):
                grid[i][j] = 2 * (row_ones[i] + col_ones[j]) - m - n
        
        return grid