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Print a given matrix in counter-clock wise spiral form

Last updated: 05 December 2022

Given a 2D array, print it in counter-clock wise spiral form. See the following examples.Examples :Input: 1 2 3 4 5 6 7 8 9 10 11 12...read more

Matrix

spiral

DSA

Find coordinates of a prime number in a Prime Spiral

Last updated: 02 August 2022

IntroductionThe Ulam spiral is a graphical depiction of the set of prime numbers, devised by mathematician Stanislaw Ulam. It is constructed by writing the positive intege...read more

Print a matrix in a spiral form starting from a point

Last updated: 15 July 2022

Given a matrix of size n*m, and a point P(c, r). Print the matrix in a spiral form(clockwise) starting from the point P.Examples :Input : mat[][] = {{1 2 3}, ...read more

Matrix

spiral

DSA

Print a given matrix in reverse spiral form

Last updated: 16 February 2023

Given a 2D array, print it in reverse spiral form. We have already discussed Print a given matrix in spiral form. This article discusses how to do the reverse printing. Se ...read more

Basic Coding Problems

Circular Matrix (Construct a matrix with numbers 1 to m*n in spiral way)

Last updated: 12 December 2022

Given two values m and n, fill a matrix of size 'm*n' in a spiral (or circular) fashion (clockwise) with natural numbers from 1 to m*n.Examples:Input : m = 4, n = 4Output ...read more

Matrix

spiral

DSA

Sum of both diagonals of a spiral odd-order square matrix

Last updated: 11 September 2023

We have given a spiral matrix of odd-order, in which we start with the number 1 as center and moving to the right in a clockwise direction.Examples :Input : n = 3 Output : ...read more

Matrix

spiral

DSA

Rotate each ring of matrix anticlockwise by K elements

Last updated: 11 September 2023

Given a matrix of order M*N and a value K, the task is to rotate each ring of the matrix anticlockwise by K elements. If in any ring elements are less than and equal K the ...read more

Print K'th element in spiral form of matrix

Last updated: 12 December 2022

Given a 2D Matrix of order n X m, print K'th element in the spiral form of the matrix. See the following examples.Examples:Input: mat[][] = {{1, 2, 3, 4} ...read more

Print n x n spiral matrix using O(1) extra space

Last updated: 01 July 2022

Given a number n, print a n x n spiral matrix (of numbers from 1 to n x n) in clockwise direction using O(1) space.Example :Input: n = 5Output:25 24 23 22 2110 9 8 7 20 ...read more

Convert a Binary Tree into Doubly Linked List in spiral fashion

Last updated: 30 June 2022

Given a Binary Tree, convert it into a Doubly Linked List where the nodes are represented Spirally. The left pointer of the binary tree node should act as a previous node ...read more

Print a given matrix in spiral form

Last updated: 14 June 2023

Given a 2D array, print it in spiral form.Examples:Input: {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16 }}Output: 1 2 3 4 8 12 16 15...read more

Basic Coding Problems

Level order traversal in spiral form

Last updated: 09 August 2023

Given a Binary Tree, the task is to print the Level order traversal of the Binary Tree in spiral form i.e, alternate order.Example:Input:Output: 1 2 3 4 5 6 7Explanation:L...read more

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