Java金字塔1-15代码实现(两位数占两个字符）

类文件：Pyramid.java

import java.util.Scanner;

public class Pyramid{
    public static void main(String[] args)
   {
        Scanner input=new Scanner(System.in);
        int m=input.nextInt();
        int k=2*m-1,i,j,p,q,x=0,y=k;
        int  a[][]=new int[1000][1000];
        for(i=m-1;i>=0;i--){
            p=i+1;q=1;
            for (j =x; j < k / 2; j++){
                a[i][j] = p;
                p--;
            }
            for (j = k / 2; j =m-9&&m<=m+7)
                                System.out.printf("  ");
                            else
                                System.out.printf("   ");
                        }

                        else{
                            if(a[i][j]<=9&&a[i][j]>0)
                                System.out.printf("%d ", a[i][j]);
                            else
                                System.out.printf("%2d ", a[i][j]);
                        }

                    }

            }
                System.out.println();
        }

    }
}

部分运行结果展示：

eg1:输入9

eg2:输入15