^(XOR)运算符的作用是什么? [英] What does the ^ (XOR) operator do?

问题描述

异或执行什么数学运算?

What mathematical operation does XOR perform?

推荐答案

XOR是一个二进制运算，表示异或"，也就是说，如果仅精确地 one ，结果位将为1.设置了em>.

XOR is a binary operation, it stands for "exclusive or", that is to say the resulting bit evaluates to one if only exactly one of the bits is set.

这是它的功能表:

a | b | a ^ b
--|---|------
0 | 0 | 0
0 | 1 | 1
1 | 0 | 1
1 | 1 | 0

此操作在数字的每两个对应位之间执行.

This operation is performed between every two corresponding bits of a number.

示例:7 ^ 10
二进制形式:0111 ^ 1010

Example: 7 ^ 10
In binary: 0111 ^ 1010

  0111
^ 1010
======
  1101 = 13

属性:该运算是可交换的，关联的并且是自反的.

Properties: The operation is commutative, associative and self-inverse.

它也与加模2相同.

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