SpiralMatrix.java

import java.util.*;
public class matrics{

    public static void spiralPrint(int matrix[][]) {
        int startRow=0;
        int startCol=0;
        int endRow=matrix.length-1;
        int endCol=matrix[0].length-1;
        while(startRow <= endRow && startCol <= endCol) {
            //top
            for(int j=startCol; j<=endCol;j++) {
                System.out.print(matrix[startRow][j]+" ");
            }

            //right
            for(int i=startRow+1; i<=endRow;i++) {
                System.out.print(matrix[i][endCol]+ " ");
            }
            //bottom
            for(int j=endCol-1;j>=startCol;j--) {
                System.out.print(matrix[endRow][j]+" ");
            }
            //left
            for(int i=endRow-1;i>=startRow;i--) {
                System.out.print(matrix[i][startCol]+ " ");
            }
            startCol++;
            startRow++;
            endCol--;
            endRow--;
        }

        System.out.println();
            }
    public static void main(String args[]) {
        int matrix[][] = {{1,2,3,4},
                          {5,6,7,8},
                          {9,10,11,12},
                          {13,14,15,16}};
        spiralPrint(matrix);                    
    }
}