数字金字塔

import java.util.*;
class Main {
  public static void main(String[] args){
    Scanner input = new Scanner(System.in);
    System.out.print("Enter the lines: ");
    int lines = input.nextInt();
    
    if(lines >= 1 && lines <=15){
     
      for(int i = 1; i <= lines; i++){
      
      for(int j = lines; j >= i; j--)//输出左边
        System.out.print("  ");
      
      for(int j = 0; j < i-1 ; j++) //输出中间i j:0到(i-2) i-j:i到2
        System.out.printf("%2d",i-j);

      for(int j = i-1; j >= 0; j--)//输出右边i j:（i-1)到0 i-j:1到i
        System.out.printf("%2d",i-j);
      
      System.out.print("\n");
      } 
    }  
  }
}

四种图案

标签：数字,int,lines,System,printf,print,金字塔,out
来源： https://www.cnblogs.com/doudou-20123/p/16308917.html