java - 嵌套循环递减数

Question

创建一个类，要求用户输入数字，然后根据 int 输入打印出以下模式。

所以我制作的代码结果看起来像这样......

12345 
 1234 
  123 
   12 

但它应该看起来像这样

    5
   45
  345
 2345
12345

Scanner tri = new Scanner(System.in);
System.out.println("Enter a postive integer.");
int shape = tri.nextInt();
for(int c = shape; c > 1; --c){
    for (int a = 1; a <= shape-c; a++){
        System.out.print(" ");
    }
    for(int d = 1; d <= c; d++){
        System.out.print(d);
    }
    System.out.println(" ");

Answer 1

你能试试下面的代码吗？

Scanner tri = new Scanner(System.in);
System.out.println("Enter a postive integer.");
int shape = tri.nextInt();

for (int c = shape; c >= 1; --c) {
    for (int a = 1; a <= c; a++) {
        System.out.print(" ");
    }
    for (int d = c; d <= shape; d++) {
        System.out.print(d);
    }
    System.out.println(" ");
}

// result
//     5 
//    45 
//   345 
//  2345 
// 12345