(num > 0) && (((num - 1) & num) == 0) ?
correct
just ((num - 1) & num) is enough
((num - 1) ^ num) also can
It's quite practical and quite frequent. It's important to know it, otherwise you don't understand what's going on.
((num - 1) ^ num) also can
It's quite practical and quite frequent. It's important to know it, otherwise you don't understand what's going on.
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