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標題: IVE Lab 7-7 Sample [打印本頁]

作者: f66666602 時間: 2007-7-27 21:16
標題: IVE Lab 7-7 Sample
// IVE Lab 7-7

import javax.swing.*;

public class Lab_7_7_cal_of_gcd {

  static String num_1_st, num_2_st;
  static int gcd, num_1, num_2;
  static int result_1, result_2;

  public static void main(String[] args) {

num_1_st = JOptionPane.showInputDialog(null, "Input the first number", "Find the Greater Common Diviser(GCD)", JOptionPane.QUESTION_MESSAGE);

num_1 = Integer.parseInt(num_1_st);

num_2_st = JOptionPane.showInputDialog(null, "Input the second number", "Find the Greater Common Diviser(GCD)", JOptionPane.QUESTION_MESSAGE);

num_2 = Integer.parseInt(num_2_st);

gcd = 1;
for (int i = 1; i <= 5; i++) {

   switch (i) {

      case 1 :
      while (num_1 % 2 == 0 && num_2 % 2 == 0) {
      num_1 /= 2;
      num_2 /=2;
      gcd *= 2;
      }
      break;

      case 2 :
      while (num_1 % 3 == 0 && num_2 % 3 == 0) {
      num_1 /= 3;
      num_2 /= 3;
      gcd *= 3;
      }
      break;

      case 3 :
      while (num_1 % 5 == 0 && num_2 % 5 == 0) {
      num_1 /= 5;
      num_2 /= 5;
      gcd *= 5;
      }
      break;

      case 4 :
      if (num_2 != 1) {
      while (num_1 % num_2 == 0) {
         num_1 /= num_2;
         gcd *= num_2;
      }
      }
      break;

      case 5 :
      if (num_1 != 1) {
      while (num_2 % num_1 == 0) {
         num_2 /= num_1;
         gcd *= num_1;
      }
      }
      break;
   }
}
System.out.println("The GCD of those number is " + gcd);
  }
}

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