Question

您好我正在尝试重置java中的计数器，因为我需要打印出一个数字因子的数量和因子的总和。当我输入多个整数值时，这些计数器会不断加起来。在输入每个新整数后，java中有没有办法重置计数器？到目前为止，这是我的代码。

import java.util.Scanner;

public class FindFactors {

  public static void main (String args[]) {
    Scanner in = new Scanner(System.in);
    int num, factorcounter = 0;
    int sumfactors = 0;
    System.out.print("Enter a positive integer.");
    while(in.hasNextInt()) {
      num = in.nextInt();
      if(num > 0) {
        for(int i = 1; i <= num; i++) {
          if(num % i == 0) {
            factorcounter++;
            System.out.println(i + " is a factor of " + num);
            sumfactors = sumfactors + i;
          }
        }
        System.out.println("The number of factors: " + factorcounter);
        if (sumfactors / 2 == num) {
          System.out.println(num + " is a perfect number!");
        }
      }
      else {
        System.out.println("Invalid Input");
      } 
    }
  }
}

Answer 1

您必须为变量指定零。

Scanner in = new Scanner(System.in);
    int num,factorcounter = 0;
    int sumfactors = 0;
    System.out.print("Enter a positive integer.");
    while(in.hasNextInt())
{

        num = in.nextInt();

        factorcounter = 0;
        sumfactors = 0;

        if(num > 0)
        {
            for(int i = 1; i <= num; i++)
            {
                if(num % i == 0)
                {
                        factorcounter++;
                        System.out.println(i + " is a factor of " + num);
                        sumfactors = sumfactors + i;
                }
            }
            System.out.println("The number of factors: " + factorcounter);
            if (sumfactors/2 == num)
            {
                                System.out.println(num + " is a perfect number!");
            }

        }
        else
        {
                        System.out.println("Invalid Input");
        }   
}

如何在Java中为多个输入重置计数器？

1 个答案: