Java打印蛇形矩阵

今天在论坛看见一帖子，感觉很好玩。

帖子如下：

请各位帮忙实现输入如下矩阵代码：
1 2 6 7
3 5 8 13
4 9 12 14
10 11 15 16

 

实现代码如下：

public class Show{public static void main(String[] args) {int n=4;//方阵大小int[][] data = new int[n][n];int dire; //当前数字的移动方向final int UPRIGHT = 0; //上右final int DOWN = 1; // 下final int LEFTDOWN= 2; //左下final int RIGHT = 3;// 右dire = RIGHT;//第一次向右移动int value = 1; //数组元素的值int row = 0; //第一维下标int col = 0; //第二维下标data[0][0] = 1; //初始化第一个元素 data[n-1][n-1] = n*n;while(value < n * n-1){switch(dire){case DOWN:row++; //移动到下一行if(row>=n){ //超过边界row--; //后退dire = RIGHT;continue; //跳过该次循环}else {value++; //数值增加1data[row][col] = value;//赋值if(col==0) { dire = UPRIGHT; }else if(col==n-1){ dire = LEFTDOWN; }} break;case UPRIGHT:row--;col++; //移动到上一行，右一列if(col>=n)//超过边界{row++;col--; //后退dire = DOWN;continue; //跳过该次循环}else if(row<0){ //超过边界row++;col--; //后退dire = RIGHT; continue; //跳过该次循环 } else {value++; //数值增加1data[row][col] = value;//赋值dire = UPRIGHT;}break;case RIGHT:col++; //移动到右一列if(col>=n){ col--; //后退dire = DOWN;continue; //跳过该次循环}else {value++; //数值增加1data[row][col] = value;//赋值if(row==0) { dire = LEFTDOWN; }else if(row==n-1){ dire = UPRIGHT; }}break;case LEFTDOWN:row++;col--; //移动到下一行，左一列if(row>=n) { //超过边界row--;col++; //后退dire = RIGHT;continue; //跳过该次循环}else if(col<0)//超过边界{row--;col++; //后退dire = DOWN;continue; //跳过该次循环}else {value++; //数值增加1data[row][col] = value;//赋值dire = LEFTDOWN;}break;}}//输出数组中的元素for(int i = 0;i < data.length;i++){for(int j = 0;j < data[i].length;j++){if(data[i][j] < 10){//右对齐System.out.print(' ');}System.out.print(data[i][j]);System.out.print(' ');    }   System.out.println();}}}