题解 | #求int型正整数在内存中存储时1的个数#

import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); /输入一个 int 型的正整数，计算出该 int 型数据在内存中存储时 1 的个数。/ int i = scanner.nextInt(); int count = 0; String binaryString = Integer.toBinaryString(i); char[] chars = binaryString.toCharArray(); for (int j = 0; j < chars.length; j++) { if((chars[j] + "").equals("1")){ ++count; } } System.out.println(count);

}

}