有关Java十进制转二进制转换器的问题

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英文:

Trouble with Java decimal to binary converter

问题

import javax.swing.*;

public class BinaryConverter {
    public static void main(String[] args) {
        char number;
        int input, length;
        String reversedBinary = "", binary = "";

        input = Integer.parseInt(JOptionPane.showInputDialog("What number would you like converted to binary?"));

        do {
            reversedBinary = reversedBinary + "" + input % 2;
            input = input / 2;
        } while (input > 0);

        length = reversedBinary.length();
        length--;

        while (length > 0) {
            number = reversedBinary.charAt(length);
            binary = binary + number;
            length--;
        }
        System.out.print("The number converted to binary is: " + binary);
    }
}
英文:

I am learning Java and have been trying to build this converter for more than a week, but this attempt sometimes leaves out a necessary 0 and also does not give a result for the input "1".

this code has imported javax.swing.*; // allows for "JOptionPane.showInputDialog", a request for typed information plus a message

public static void main(String[] args) {
	// TODO Auto-generated method stub
		char number;
		int input, length;
		String reversedBinary = "", binary = "";
		
		input = Integer.parseInt(JOptionPane.showInputDialog
				("What number would you like converted to binary?")); // Requesting user to give input
		
		do {   // gets the reversed binary. For instance: 5 = 101
			reversedBinary = reversedBinary + "" + input % 2;
			input = input/2;
		} while (input > 0);
		
		length = reversedBinary.length();
		length--; // getting the usable position numbers instead of having length give me the position one ahead
		
		while (length > 0) { // some code to reverse the string
			number = reversedBinary.charAt(length);
			binary = binary + number;
			length--; // "reversedBinary" is reversed and the result is input into "binary"
		}
		System.out.print("The number converted to binary is: " + binary); // output result
}

}

答案1

得分: 0

以下是翻译好的代码部分:

input = Integer.parseInt(JOptionPane.showInputDialog("您想要转换为二进制的数字是多少?")); // 请求用户输入
String BinaryStr = "";
int i = 0;
while (input > 0){   
    BinaryStr = BinaryStr + input % 2; 
    input = input / 2;
    i++; 
} 
for (int j = i - 1; j >= 0; j--) 
    System.out.print(BinaryStr.charAt(j)); 
英文:

Something like this shall work.

    input = Integer.parseInt(JOptionPane.showInputDialog
            ("What number would you like converted to binary?")); // Requesting user to give input
    String BinaryStr="";
    int i = 0;
    while (input > 0){   
        BinaryStr= BinaryStr+  input % 2; 
        input = input/2;
        i++; 
    } 
    for (int j = i - 1; j >= 0; j--) 
        System.out.print(BinaryStr.charAt(j)); 

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  • 本文由 发表于 2020年3月15日 17:43:36
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