public class Solution { public int NumberOf1(int n) { int ans=0; int mark=0x01; while(mark!=0){ if((mark&n)!=0)++ans; mark<<=1; } return ans; } }
public class Solution { public int NumberOf1(int n) { int ans=0; int mark=0x01; while(mark!=0){ if((mark&n)!=0)++ans; mark<<=1; } return ans; } }