-2's one's complement is 100000...01
-2's two's complement is 1000000...10
-2 >>> 1
According >>> definition left side shifts in 0
should be something like 01000......1, why becomes 0111111..11?
Why -2>>>1 equals 2147483647 in Java
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In order to produce two's complement representation of
2(i.e.-2's representation) you start with the representation of2, flip all its bits, and add1to the result:-2's binary representation is11111111111111111111111111111110(demo).Shifting it over to the right by one without sign-extension produces
which is precisely the result that you get.