_Sprialmatrix.java

import java.util.*;
public class _Sprialmatrix {
    public static void spiral_Matrix(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--){
                if (startRow==endRow){
                    break;
                }
                System.out.print(matrix[endRow][j]+" ");
            }
            //left
            for (int i=endRow-1;i>=startRow+1;i--){
                if (startCol==endCol){
                    break;
                }
                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}};
    spiral_Matrix(matrix);
}
    
}