答案是2到10还是0到10？ [英] Is the answer from 2 to 10 or from 0 to 10?

问题描述

Sololearn上有人建议：想打印前5个偶数吗？在JS中，答案是这样的：



var x;

for（x = 0; x< = 10; x + = 2）{

document.write（x +）;

}



我是什么尝试过：



发布问题的人输出为2 4 6 8 10，但是当我尝试时，它是0 2 4 6 8 10 ??

解决方案

从技术上讲，你们两个都不对：零是偶数 - 奇偶校验 - 维基百科 [ ^ ] - 所以前五个偶数是0,2,4,6,8。



所以他的解决方案是错误的 - 你的也是如此！ ：笑：

Someone on sololearn suggested this: "Want to print the first 5 even numbers?" in JS, and the answer was like this:

var x;
for(x=0;x<=10;x+=2){
document.write(x+" ");
}

What I have tried:

Output was 2 4 6 8 10 for the guy who posted the question, but when I tried it, it was 0 2 4 6 8 10??

解决方案

Technically, neither of you are right: zero is an even number - Parity of zero - Wikipedia[^] - so the "First five even numbers" are 0, 2, 4, 6, 8.

So his solution is wrong - and so is yours! :laugh:

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