Md Kamran - LearnYard - Free Programming & DSA Blogs | Read, Code, Excel (Page 4)

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Md Kamran

Queens That Can Attack The King

Problem Description On a 0-indexed 8 x 8 chessboard, there can be multiple black queens and one white king. You are given a 2D integer array queens where queens[i] = [x_Queeni, y_Queeni] represents the position of the ith black queen on the chessboard. You are also given an

Check if Matrix is X-Matrix

Problem Description A square matrix is said to be an X-Matrix if both of the following conditions hold: 1. All the elements in the diagonals of the matrix are non-zero. 2. All other elements are 0. Given a 2D integer array grid of size n x n representing a square