How do you find the complement of numbers in java script?

Answer 1

function complement(num, base){

var result = 0, column = 0;

if(base < 2) return null;

while(num > 0){

digit = num % base;comp = base - 1 - digit;result += comp * Math.pow(base, column);column++;num -= digit;num /= base;}

return result;

}