题解 | #求int型正整数在内存中存储时1的个数#

import Foundation

while let line = readLine() {
    var number = Int(line)!
    if number == 0 {
        print("0")
        continue
    } 
    var count = 0
    while  number > 0 {
           if number & 1 == 1 {
            count += 1
           }

           number = number >> 1
    }


        print(count)



    // let parts = line.split(separator: " ")
    // print(Int(parts[0])! + Int(parts[1])!)
}