Java数学函数将正整数转换为负数并将负数转换为正数? [英] Java math function to convert positive int to negative and negative to positive?

问题描述

是否有 Java 函数将正整数转换为负整数，将负整数转换为正整数?

Is there a Java function to convert a positive int to a negative one and a negative int to a positive one?

我正在寻找一个 reverse 函数来执行这个转换:

I'm looking for a reverse function to perform this conversion:

-5  ->  5
 5  -> -5

推荐答案

x *= -1; 怎么样?你真的想要一个库函数吗?

What about x *= -1; ? Do you really want a library function for this?

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