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SpiralOrderMatrix.java

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//Print the spiral order matrix as output for a given matrix of numbers.

package Array;

import java.util.*;

public class SpiralOrderMatrix {

public static void main(String args[]) {

Scanner sc = new Scanner(System.in);

int n = sc.nextInt();

int m = sc.nextInt();

int matrix[][] = new int[n][m];

for(int i=0; i<n; i++) {

for(int j=0; j<m; j++) {

matrix[i][j] = sc.nextInt();

}

System.out.println("The Spiral Order Matrix is : ");

int rowStart = 0;

int rowEnd = n-1;

int colStart = 0;

int colEnd = m-1;

//To print spiral order matrix

while(rowStart <= rowEnd && colStart <= colEnd) {

//1

for(int col=colStart; col<=colEnd; col++) {

System.out.print(matrix[rowStart][col] + " ");

}

rowStart++;

//2

for(int row=rowStart; row<=rowEnd; row++) {

System.out.print(matrix[row][colEnd] +" ");

}

colEnd--;

//3

for(int col=colEnd; col>=colStart; col--) {

System.out.print(matrix[rowEnd][col] + " ");

}

rowEnd--;

//4

for(int row=rowEnd; row>=rowStart; row--) {

System.out.print(matrix[row][colStart] + " ");

}

colStart++;

System.out.println();

}