生成固定长度的随机数组 [英] Generating random array of fixed length

问题描述

我只是想更改我的代码，以便每次运行该代码时都会生成一个固定长度为100的整数的随机数组，而不是在代码中仅包含一个预先设置的数组.我对此很陌生，所以只需要一个正确方向的指南，谢谢

I am just looking to change my code so that a random array of a fixed length of 100 integers is generated every time the code is ran rather than just have a pre-set array within the code. I am quite new to this so just need a guide in the right direction, thanks

public class Selectionsort {
    public static void main(String[] args) {
        int[] numbers = {15, 8, 6, 21, 3, 54, 6, 876, 56, 12, 1, 4, 9};
        sort(numbers);
        printArray(numbers);
    }

    public static int[] sort(int[] A) {
        for (int i = 0; i < A.length - 1; i++) {
            int minIndex = i;
            for (int j = i + 1; j < A.length; j++) {
                if (A[j] < A[minIndex]) {
                    minIndex = j;
                }
            }
            int temp = A[minIndex];
            A[minIndex] = A[i];
            A[i] = temp;
        }
        return A;
    }

    public static void printArray(int[] A) {
        for (int i = 0; i < A.length; i++) {
            System.out.println(A[i]);
        }
    }
}

推荐答案

public class Selectionsort {
    public static void main(String[] args) {
        int[] numbers = new int[100]
        Random random = new Random();

        for (int i = 0; i < numbers.length; i++) {
            numbers[i] = random.nextInt(100);
        }
        sort(numbers);

        printArray(numbers);
    }
}

上面的代码段将帮助您为大小为100的数组创建一个介于1到100之间的随机数.

The above snippet will help you to create a random numbers between 1 to 100 for the array of size 100.

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