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Grokking the Coding Interview Patterns in C++

Solution: Set Matrix Zeroes

Understand how to solve the set matrix zeroes problem by using an in-place algorithm that marks zero rows and columns with minimal extra space. Explore step-by-step traversal and boolean flag techniques to modify the matrix efficiently while minimizing time and space complexity.

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Statement

Given a matrix, mat, if any element within the matrix is zero, set that row and column to zero. The performed operations should be in place, i.e., the given matrix is modified directly without allocating another matrix.

Constraints:

  • 1≤1 \le mat.row, mat.col ≤20\le 20
  • −231≤-2^{31} \le mat[i][j]
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