莫尔斯英语
问题描述:
所以程序的对象是在标题。我已经成功地将英语转换成莫尔斯电码,但相反的方式证明是困难的。我已经浏览了所有的论坛,并没有能够解决我的问题在这里。它似乎可以转换,它只是转换莫尔斯电码的最后一个字符。我也无法想出使用空格区分单词的方法。任何帮助将不胜感激。莫尔斯英语
/******
* This program will prompt the user to specify the desired type of translation,
* input a string of Morse code characters or English characters,
* then display the translated results
*
* Pre-Conditions:
*
* Post-Conditions:
*
* @author: PC
******/
import java.util.Scanner;
import java.util.Arrays;
public class MorseCode
{
public static void main(String [] args)
{
Scanner input = new Scanner(System.in);
String userInput;
System.out.println("This is a Translator.");
System.out.println("Would you like to translate sentence to Morse code or English? (MC or E):");
String choice = input.nextLine();
choice = choice.toLowerCase();
if(choice.equals("e")){
System.out.println("Enter sentence (puncuation not needed):");
userInput = input.nextLine();
userInput = userInput.toLowerCase();
String [] morseWords = userInput.split(" ");
convertToEnglish(morseWords);
}
else if(choice.equals("mc")){
System.out.println("Enter sentence (puncuation not needed):");
userInput = input.nextLine();
convertToMorse(userInput);
}
}
public static void convertToMorse(String text)
{
int i, j;
String [] morseAns = new String[text.length()];
text = text.toLowerCase();
String alphabet = ("abcdefghijklmnopqrstuvwxyz1234567890 ");
String [] morse = new String[] { ".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--",
"-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--..",
".----","..---","...--","....-",".....","-....","--...","---..","----.","-----", "|" };
char selectedChar, convertedChar, alphabetChar;
for(i = 0; i < text.length(); i++)
{
selectedChar = text.charAt(i);
for(j = 0; j < alphabet.length(); j++)
{
alphabetChar = alphabet.charAt(j);
if(selectedChar == alphabetChar)
{
morseAns[i] = morse[j];
}
}
}
for(i = 0; i < text.length(); i++)
{
System.out.print(morseAns[i] + " ");
}
}
public static void convertToEnglish(String [] multiMorseWords)
{
int i, j;
String multipleMorseWords;
String alphabet = ("abcdefghijklmnopqrstuvwxyz1234567890 ");
String [] morse = new String[] { ".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--",
"-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--..",
".----","..---","...--","....-",".....","-....","--...","---..","----.","-----", "|" };
char [] englishAns = new char[multiMorseWords.length];
for(i = 0; i < multiMorseWords.length; i++)
{
multipleMorseWords = multiMorseWords[i];
String [] morseChars = multipleMorseWords.split(" ");
for(j = 0; j < morseChars.length; j++)
{
if(morseChars[j].equals(morse[j]))
{
englishAns[i] = alphabet.charAt(j);
}
}
}
for(i = 0; i < multiMorseWords.length; i++)
{
System.out.println(englishAns[i]);
}
}
}
答
您只需创建一个地图,并添加所有键的莫尔斯电字符串和值的字母,然后遍历单词和从地图得到。有一些事情你必须处理,例如每个莫尔斯码应该由某些东西划定界限,然后单词应该是不同的。就像你目前有一个单词有3个空格,你将不得不划定间距的莫尔斯值,否则我没有看到一种方式来区分。
这里有一个例子:
public static void convertToEnglish(String[] multiMorseWords) {
Map<String, String> morse = new HashMap<String, String>();
morse.put(".-", "a");
morse.put("-...", "b");
// etc.. add all the morse code inputs
for (String word : multiMorseWords) {
System.out.println(morse.get(word));
}
}
答
修正我的代码!在main方法中不需要调用split(),只需要在convertToEnglish方法中分割即可。这里是我的修订方法:
public static void convertToEnglish(String morseSentence)
{
int i, j;
String alphabet = ("abcdefghijklmnopqrstuvwxyz1234567890 ");
String [] morse = new String[] { ".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--",
"-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--..",
".----","..---","...--","....-",".....","-....","--...","---..","----.","-----", "|" };
String [] morseChars = morseSentence.split(" ");
String selectedMorse;
char [] englishAns = new char[morseChars.length];
for(i = 0; i < morseChars.length; i++)
{
selectedMorse = morseChars[i];
for(j = 0; j < morse.length; j++)
{
if(selectedMorse.equals(morse[j]))
{
englishAns[i] = alphabet.charAt(j);
}
}
}
for(i = 0; i < englishAns.length; i++)
{
System.out.print(englishAns[i]);
}
}
的[转换摩尔斯电码,以英文文本与Java]可能的复制(http://*.com/questions/29572916/converting-morse-code-to-english-text- with-java) –
如果你的当前输出与你想要的输出不匹配,并且你不知道为什么,那么是时候开始调试了。如果你不确定如何去做这件事,那么请看看:[如何调试小程序](http://ericlippert.com/2014/03/05/how-to-debug-small-程式/)。它不会解决你的直接问题,但它会给你你可以遵循的步骤,应该可以帮助你自己解决它,或者即使这样做不成功,那么至少可以帮助你更好地隔离你的问题,以便你的问题可以更专注,更容易回答。 –