在Java语言中通过输入长和宽写螺旋矩阵最后的输出语句不知道怎么写了

package zuoye;

import java.util.Scanner;

public class juzhen {
private static Scanner s;
private static char[][][] nums;

public static void main(String[] args){
    s = new Scanner(System.in);
    System.out.print("请输入矩阵的长：");
    int indexC=s.nextInt();
    
    System.out.print("请输入矩阵的宽：");
    int indexK=s.nextInt();
    if(indexC<=0||indexK<=0){
        System.out.println("输入的数字不合法！");
        return;
    }
        int[][] square=new int[indexC][indexK];
        int x=0;int y=0;
        for(int i=1;i<=indexC*indexK;){
            while(y<square[x].length-1&&square[x][y+1]==0){
                square[x][y++]=i++;
            }
            while(x<square.length&&square[x][y]==0){
                square[x++][y]=i++;
        }
            while(y>0&&square[x-1][y-1]==0){
                square[x-1][--y]=i++;
            }
              if(++y>) break;
        }
        System.out.println(nums[x][y]);

}
}