将汇编算法转换为Java序列计算器

当我在java代码中输入“3”时，它会打印出来

3将乘以3和+1 值为10

关于如何修改它的任何建议，以便它正确计算序列

    import javax.swing.*;
public class sequences {

    /**
     * @param args
     */
    public static void main(String[] args) {
            calculateSequences();
    }//ends main

    public static void calculateSequences()
        {
            int value;
            String valueInput = JOptionPane.showInputDialog("Value");
            value = Integer.parseInt(valueInput);

            if(value == 1)
            {
                System.out.println("Value is equal to 1, closing down");
                System.exit(0);

            }
            else if ((value%2)==0)
            {
            System.out.println(value + " will be divided by 2");
            value = value/2;
            System.out.println("Value is even " + value);

            }
            else
            {
                System.out.println(value + " will be multiplied by 3 and +1");
                value = 3*value+1;
                System.out.println("Value is " + value);

            }

        }//ends calculateSequences
}//ends class

---

您需要添加迭代或递归。因为这是Java，所以使用迭代是最有意义的

这与算法中的“开始”行相对应

为此，您可以使用

while

循环，例如

while（true）

您忘记了“转到开始”按钮

以下是一次测试的结果

23 will be multiplied by 3 and + 1
Value is 70
70 will be divided by 2
Value is even 35
35 will be multiplied by 3 and + 1
Value is 106
106 will be divided by 2
Value is even 53
53 will be multiplied by 3 and + 1
Value is 160
160 will be divided by 2
Value is even 80
80 will be divided by 2
Value is even 40
40 will be divided by 2
Value is even 20
20 will be divided by 2
Value is even 10
10 will be divided by 2
Value is even 5
5 will be multiplied by 3 and + 1
Value is 16
16 will be divided by 2
Value is even 8
8 will be divided by 2
Value is even 4
4 will be divided by 2
Value is even 2
2 will be divided by 2
Value is even 1
Value is equal to 1, closing down

这是添加了while子句的代码

import javax.swing.JOptionPane;

public class Sequences {

    /**
     * @param args
     */
    public static void main(String[] args) {
        calculateSequences();
    }// ends main

    public static void calculateSequences() {
        int value;
        String valueInput = JOptionPane.showInputDialog("Value");
        value = Integer.parseInt(valueInput);

        while (value > 0) {
            if (value == 1) {
                System.out.println("Value is equal to 1, closing down");
                System.exit(0);

            } else if ((value % 2) == 0) {
                System.out.println(value + " will be divided by 2");
                value = value / 2;
                System.out.println("Value is even " + value);

            } else {
                System.out.println(value + " will be multiplied by 3 and + 1");
                value = 3 * value + 1;
                System.out.println("Value is " + value);

            }
        }

    }// ends calculateSequences

}

以及输出：

3 will be multiplied by 3 and +1
Value is 10
10 will be divided by 2
Value is even 5
5 will be multiplied by 3 and +1
Value is 16
16 will be divided by 2
Value is even 8
8 will be divided by 2
Value is even 4
4 will be divided by 2
Value is even 2
2 will be divided by 2
Value is even 1
Value is equal to 1, closing down

3 will be multiplied by 3 and +1
Value is 10
10 will be divided by 2
Value is even 5
5 will be multiplied by 3 and +1
Value is 16
16 will be divided by 2
Value is even 8
8 will be divided by 2
Value is even 4
4 will be divided by 2
Value is even 2
2 will be divided by 2
Value is even 1
Value is equal to 1, closing down