Fill missing entries of a magic square
Given a 3X3 matrix mat with it’s left diagonal elements missing (set to 0), considering the sum of every row, column and diagonal of the… Read More »
Category Archives: Matrix
Find the intersection of two Matrices
Given two matrix A[][] and B[][] of same order m*n. The task is to find the intersection of both matrix as C, where: Cij =… Read More »
Problem of 8 Neighbours of an element in a 2-D Matrix
Given a 2-D Matrix and an integer ‘K’, the task is to predict the matrix after ‘K’ iterations given as follows: An element 1 in… Read More »
Sorting rows of matrix in descending order followed by columns in ascending order
Given a matrix of distinct elements. The task is to sort the rows of matrix in descending order followed by sorting the columns in ascending… Read More »
Find determinant of matrix generated by array rotation
Given an array of three element. The task is to construct a matrix of order 3*3 by using all three rotation of array as row… Read More »
Program to convert the diagonal elements of the matrix to 0
Given an N*N matrix. The task is to convert the elements of diagonal of a matrix to 0. Examples: Input: mat[][] = {{ 2, 1,… Read More »
Find maximum element of each column in a matrix
Given a matrix, the task is to find the maximum element of each column. Examples: Input: [1, 2, 3] [1, 4, 9] [76, 34, 21]… Read More »
Print sum of matrix and its mirror image
You are given a matrix of order N*N. The task is to find the resultant matrix by adding the mirror image of given matrix with… Read More »
Minimum element of each row and each column in a matrix
Given a matrix, the task is to find the minimum element of each row and each column. Examples: Input: [1, 2, 3] [1, 4, 9]… Read More »
Product of middle row and column in an odd square matrix
Given an integer square matrix of odd dimensions (3 * 3, 5 * 5). The task is to find the product of the middle row… Read More »
Minimum cost to cover the given positions in a N*M grid
Given a n*m grid and the position of some poles to be painted in the grid, the task is to find the minimum cost to… Read More »
Program to convert given Matrix to a Diagonal Matrix
Given a N*N matrix. The task is to convert the matrix to a diagonal matrix. That is to change the values of the non diagonal… Read More »
Search a string in Matrix Using Split function in Java
Given a string str and a matrix mat[][] of lowercase English alphabets, the task is to find whether the string str appears in the matrix… Read More »
Paths with maximum number of ‘a’ from (1, 1) to (X, Y) vertically or horizontally
Given a N X N matrix consisting of characters. Also given are Q queries, where each query contains a co-ordinate (X, Y). For every query,… Read More »
Find Maximum side length of square in a Matrix
Given a square matrix of odd order N. The task is to find the side-length of the largest square formed in the matrix. A square… Read More »
