如何使用Java中的循环用整数填充数组 [英] How to fill an array with int numbers using a loop in Java

问题描述

我是新手，我要完成一个练习，即编写一个简单的程序，该程序将在控制台中生成一个数组:

I am a newbie and I am to fulfill an exercise which is to write a simple program which would produce an array in console:

0，

0，1，

0，1，2，

我在Google上搜索类似的问题失败，这将使我找到解决办法.

I failed at google searching similar problems which would direct me at a solution.

非常感谢您的帮助.这就是我一直在尝试的基础，但是我完全陷入了困境:

I will greatly appreciate your help. This is what i have been trying to build upon, but I am completely stuck:

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] table = new int[11];
        for ( int i = 0; i <=10; i++){
            table[i] = i;
            System.out.println(i);
        }
    }

推荐答案

您应使用 Arrays.toString ，如下所示:

import java.util.Arrays;

public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] table = new int[11];
        for ( int i = 0; i <=10; i++){
            table[i] = i;
            System.out.println(Arrays.toString(table));
        }
    }
}

但是，这将打印整个数组，因为它正在填充:

However, this will print the entire array, as it is being populated:

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]
[0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0]
[0, 1, 2, 3, 0, 0, 0, 0, 0, 0, 0]
[0, 1, 2, 3, 4, 0, 0, 0, 0, 0, 0]
[0, 1, 2, 3, 4, 5, 0, 0, 0, 0, 0]
[0, 1, 2, 3, 4, 5, 6, 0, 0, 0, 0]
[0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 0]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

如果您只想填充到目前为止的元素，那么它会涉及到更多一点:

If you just want the elements filled so far, it's a little more involved:

import java.util.Arrays;

public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] table = new int[11];
        for ( int i = 0; i <=10; i++){
            table[i] = i;
            for(int j = 0; j <= i; j++)
            {
              System.out.print((j == 0 ? "" : ", ") + table[j]);
            }
            System.out.println();
        }
    }
}

输出:

0
0, 1
0, 1, 2
0, 1, 2, 3
0, 1, 2, 3, 4
0, 1, 2, 3, 4, 5
0, 1, 2, 3, 4, 5, 6
0, 1, 2, 3, 4, 5, 6, 7
0, 1, 2, 3, 4, 5, 6, 7, 8
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

这篇关于如何使用Java中的循环用整数填充数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！