Created
June 28, 2013 18:23
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Find Odd Number
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The "trick" is to binary AND a value with 1. | |
Any odd number must have the first bit set to 1. | |
So | |
var foo = 7; | |
if( foo & 1 ) { // true } | |
Using a bitwise AND has a better performance in almost all platforms / browsers. | |
for(var loop = 0; loop < 10; loop++) { | |
if( loop & 1 ) { | |
console.log('I am ', loop, ' and I am odd!'); | |
} | |
} |
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