>>=和 >>>= [重复]的区别

Question

我正试图找出两者之间的区别

public static void main(String[] args)
{
    int c = 153;
    System.out.print((c >>= 2));
    System.out.print((c <<= 2));
    System.out.print((c >>>= 2));
    System.out.print((c <<= 2));
}

Answer 1

了解有关逐位和位移位运算符的更多信息

>>      Signed right shift
>>>     Unsigned right shift

位模式由左操作数给出，右操作数给出要移位的位置数。无符号右移位运算符

而<代码>

用简单的话来说<代码>

例如，尝试使用负数。

int c = -153;
System.out.printf("%32s%n",Integer.toBinaryString(c >>= 2));
System.out.printf("%32s%n",Integer.toBinaryString(c <<= 2));
System.out.printf("%32s%n",Integer.toBinaryString(c >>>= 2));
System.out.println(Integer.toBinaryString(c <<= 2));

c = 153;
System.out.printf("%32s%n",Integer.toBinaryString(c >>= 2));
System.out.printf("%32s%n",Integer.toBinaryString(c <<= 2));
System.out.printf("%32s%n",Integer.toBinaryString(c >>>= 2));
System.out.printf("%32s%n",Integer.toBinaryString(c <<= 2));

输出：

11111111111111111111111111011001
11111111111111111111111101100100
  111111111111111111111111011001
11111111111111111111111101100100
                          100110
                        10011000
                          100110
                        10011000