You only need to do the comparison on the last digit.
this post was submitted on 01 Nov 2023
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Recently there was a thread trying to declare PHP obsolete.
Hard to beat this in efficiency:
function is_even($num) {
return $num % 2 === 0;
}
That said, this should work similarly in most languages.
If the language you are using uses "real" integers, using a bit mask to get the least significant bit is probably a lot faster - assuming the compiler doesn't replace the operation for you, in which case it doesn't matter.
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(8 replies)
They really should mod the language to support this.
I can't believe he needs that much code for this:
bool iseven(int number){ if (number % 2 == 0){ return true; } else { return false; } }
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(11 replies)
There is a simpler way: all the "else if"s can be replaced with simple "if"s
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(7 replies)
If only you could do something like..
def IsEven(number): return number % 2 == 0
I did something like this in high school