credit to my self @Joey
function bin(n) {
let array = [];
while(n) {
array.push(n%2);
n>>=1;
}
return array.reverse().join('')
}
function bin(n) {
let array = [];
let str = '';
while(n) {
array.push(n%2);
n>>=1;
}
while(array.length > 0) {
str += array.pop()
}
return str;
}
