java的按位取反~运算符号是怎么计算的

2025-02-16 11:11:17
推荐回答(1个)
回答1:

首先,你要知道java中的int是32位的
其次,正数以原码的形式存储,负数以补码的形式存储
12的二进制是0000 0000 0000 0000 0000 0000 0000 1100

取反后得1111 1111 1111 1111 1111 1111 1111 0011

java中都是有符号数,首位是1,所以是负数,负数也就是补码,也就是说
1111 1111 1111 1111 1111 1111 1111 0011是补码
补码,反码加1后得源码
转换成源码得0000 0000 0000 0000 0000 0000 0000 1101
这个数是13,加上符号就是-13

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