Question

How to count set bits of an integer in TypeScript

Answer 1

function count_set_bits(n: number) {
    let count: number = 0;
    
    while (n) {
        count += n & 1;
        n >>= 1;
    }
    
    return count;
}
  
 
const n: number = 793; // 0011 0001 1001
 
console.log(count_set_bits(n));

 
  
/*
run:
  
5
  
*/

 

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Answer 2

function count_set_bits(n: number) {
    let count: number = 0
    
    for (; n; n >>= 1) {
        count += n & 1;
    }
    
    return count;
}
  
 
const n: number = 793; // 0011 0001 1001
 
console.log(count_set_bits(n));

 
  
/*
run:
  
5
  
*/

 

70+ SQL courses for beginners and professionals