Note:
 Use
[prev, 0]
to mark zeroes.
 Need to check if cur tile is an
array
or num
.
Question:
Given an m x n
integer matrix matrix
, if an element is 0, set its entire row and column
to 0
‘s, and return the matrix.
You must do it in place.
Example:
1 2
 Input: matrix = [[1,1,1],[1,0,1],[1,1,1]] Output: [[1,0,1],[0,0,0],[1,0,1]]

Code:
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var setZeroes = function(matrix) { const rows = matrix.length; const cols = matrix[0].length; for (let i = 0; i < rows; i++) { for (let j = 0; j < cols; j ++) { if (matrix[i][j] === 0  (isNaN(matrix[i][j]) && matrix[i][j][0] === 0)) { for (let c = 0; c < cols; c++) { if (!isNaN(matrix[i][c])) { matrix[i][c] = [matrix[i][c], 0]; } } for (let r = 0; r < rows; r++) { if (!isNaN(matrix[r][j])) { matrix[r][j] = [matrix[r][j], 0]; } } } } } for (let i = 0; i < rows; i++) { for (let j = 0; j < cols; j++) { if (isNaN(matrix[i][j])) { matrix[i][j] = 0; } } } };
