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                # 1. 位運算 在`Kotlin`的簡單運算中基本和`Java`中類似,不同之處在于在`Kotlin`中沒有像`Java`那樣的那些位運算符號,而是定義了一些操作。 - 位與,`and(bits)` - 位或,`or(bits)` - 位非,`inv()` - 位異或,`xor(bits)` - 位有符號左移,`shl(bits)` - 位有符號右移,`shr(bits)` - 位無符號右移,`ushr(bits)` 下面來幾個簡單的案例: ~~~ fun main() { var a = 3 println(a.and(1)) // 1 println(a.inv()) // -4 println(a.xor(2)) // 1 } ~~~ 對于非運算這里簡單計算下: ``` 3:00000000 00000000 00000000 00000011 ~:11111111 11111111 11111111 11111100 (補碼) -1:11111111 11111111 11111111 11111011 ~:10000000 0000000 0000000 00000100 ``` 直觀地可以看見其值位`-4`。
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