Zero Matrix Problem Statement
You are given a matrix MATRIX
of dimension N x M
. Your task is to make all the elements of row i
and column j
equal to 0
if any element in the ith
row or jth
column of the matrix is 0
.
Input:
The first line of the input contains an integer 'T' denoting the number of test cases.
The first line of each test case contains two space-separated integers, 'N' and 'M', as described in the problem statement.
The next 'N' lines of each test case contain 'M' integers separated by spaces describing rows of the matrix.
Output:
For each test case, return 'N' rows consisting of 'M' integers representing the matrix.
Example:
Example: Consider the MATRIX
below:
Input: MATRIX = [[1, 2, 3], [4, 0, 6], [7, 8, 9]]
Output: [[1, 0, 3], [0, 0, 0], [7, 0, 9]]
Constraints:
1 ≤ T ≤ 50
1 ≤ N ≤ 100
1 ≤ M ≤ 100
-109 ≤ MATRIX[i][j] ≤ 109
- whereMATRIX[i][j]
denotes the matrix element.
Note:
- You don\'t need to print anything, it has already been taken care of. Just implement the given function.
Follow-Up:
Can you solve it with a space complexity of O(1)
? Time limit: 1 sec.
AnswerBot
1y
The task is to modify a given matrix such that if any element in a row or column is 0, then make all elements in that row and column 0.
Iterate through the matrix and keep track of rows and columns tha...read more
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