java螺旋矩阵代码

package com.testwork;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Demo{

   public static void main(String[] args){
  String strln = "";
System.out.println("请输入矩阵的行列数：");
InputStreamReader input = new InputStreamReader(System.in);
BufferedReader buff = new BufferedReader(input);
try {
strln = buff.readLine();
} catch (IOException e) {
System.out.println(e.toString());
}
int int1 = Integer.parseInt(strln);
int n = int1;
System.out.println("这是行列数为"+n+"的螺线型数组");
int intA = 1; //初始化
int[][] array = new int[n][n];
int intB;
if (n%2!=0) {
intB = n/2 + 1; //奇数是i循环次数
} else {
intB = n/2; //偶数是i循环次数
}
for (int i = 0; i < intB; i++) { //从外到里循环
//从左到右横的开始
for (int j = i; j < n - i; j++) {
array[i][j] = intA;
intA++;
}
//从上到下纵
for (int k = i + 1; k < n - i; k++) {
array[k][n-i-1] = intA;
intA++;
}
//从右到左纵
for (int l = n - i - 2; l >= i; l--) {
array[n-i-1][l] = intA;
intA++;
}
//从下到上纵
for (int m = n - i - 2; m > i; m--) {
array[m][i] = intA;
intA++;
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
System.out.print(array[i][j] + "  ");
}
System.out.println();
}
}

}

输出结果：