java - counting number of ones in binary representation of a number

Monday, December 3, 2018

java - counting number of ones in binary representation of a number

I want to find out how many 1s are there in binary representation of a number.I have 2 logic .

  int count =0;
int no = 4;

while(no!=0){

    int d = no%2;
    if(d==1)
        count++;
    no = no/2;
    str = str+ d;
}

Now second logic is to keep on masking number iteratively with 1,2,4,8,32 and check if result is 1,2,4, 8..... Am not geting what should be ending condition for this loop.

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