Question

How to count the total bits of a number that equal to one (1) in Node.js

Answer 1

function getTotalOneBits(num) {
    const binary = num.toString(2);
    
    return [...binary].filter(el => el === '1').length;
}


let num = 42;
console.log(getTotalOneBits(num)); // 00101010

num = 45;
console.log(getTotalOneBits(num)); // 00101101




/*
run:

3
4

*/

 

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