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package ch19;

public class P80_2 {

public int hammingWeight(int n) {

int count = 0;

// 0이 될 때까지 전체 반복

while (n != 0) {

// 1을 뺀 값과 AND 연산

n &= n - 1;

// 1비트씩 빠지게 되므로 카운트는 1씩 증가

count++;

}

return count;

}

}