如何用连续数字填充数组 [英] How do I fill an array with consecutive numbers

问题描述

我想使用连续的整数填充数组.我创建了一个数组，其中包含与用户输入一样多的索引:

I would like to fill an array using consecutive integers. I have created an array that contains as much indexes as the user enters:

Scanner in = new Scanner(System.in);
int numOfValues = in.nextInt();

int [] array = new int[numOfValues];

如何用从1开始的连续数字填充此数组? 感谢所有帮助！

How do i fill this array with consecutive numbers starting from 1? All help is appreciated!!!

推荐答案

自Java 8起

//                               v end, exclusive
int[] array = IntStream.range(1, numOfValues + 1).toArray();
//                            ^ start, inclusive

range以1为增量.javadoc是

The range is in increments of 1. The javadoc is here.

或使用 rangeClosed

//                                     v end, inclusive
int[] array = IntStream.rangeClosed(1, numOfValues).toArray();
//                                  ^ start, inclusive

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