Count Square Submatrices with All Ones
DP on Squares DSA practice problem on Onlearn.
Difficulty: hard.
Topics: Count Square Submatrices with All Ones in a Binary Matrix, Matrices, Two-dimensional Array Traversal, Brute Force, Dynamic Programming, Tabulation, Time Complexity, Space Complexity, Optimal Substructure, Overlapping Subproblems, Grid Traversal, Iteration, matrix, tabulation, dynamic programming, brute force, DP Techniques (Memoization & Tabulation).
Count Square Submatrices with All Ones Problem Statement Given an n m binary matrix, return the total number of square submatrices that have all ones. A square submatrix is defined by its top left corner (r1, c1) and its bottom right corner (r2, c2), where r2 r1 == c2 c1. Input Specification The input consists of a 2D integer array matrix representing the binary matrix. Output Specification Return an integer representing the total count of square submatrices with all ones. Examples Example 1: Example 2: