Last active
April 24, 2017 07:35
MorseCode object
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package com.ssaurel.morseconverter; | |
import java.util.HashMap; | |
public class MorseCode { | |
static String[] ALPHA = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", | |
"s", "t", "u", "v", "w", "x", "y", "z", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "!", ",", "?", | |
".", "'" }; | |
static String[] MORSE = { ".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", | |
"--", "-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..", ".----", | |
"..---", "...--", "....-", ".....", "-....", "--...", "---..", "----.", "-----", "-.-.--", "--..--", | |
"..--..", ".-.-.-", ".----.", }; | |
public static HashMap<String, String> ALPHA_TO_MORSE = new HashMap<>(); | |
public static HashMap<String, String> MORSE_TO_ALPHA = new HashMap<>(); | |
static { | |
for (int i = 0; i < ALPHA.length && i < MORSE.length; i++) { | |
ALPHA_TO_MORSE.put(ALPHA[i], MORSE[i]); | |
MORSE_TO_ALPHA.put(MORSE[i], ALPHA[i]); | |
} | |
} | |
public static String morseToAlpha(String morseCode) { | |
StringBuilder builder = new StringBuilder(); | |
String[] words = morseCode.trim().split(" "); | |
for (String word : words) { | |
for (String letter : word.split(" ")) { | |
String alpha = MORSE_TO_ALPHA.get(letter); | |
builder.append(alpha); | |
} | |
builder.append(" "); | |
} | |
return builder.toString().toUpperCase(); | |
} | |
public static String alphaToMorse(String englishCode) { | |
StringBuilder builder = new StringBuilder(); | |
String[] words = englishCode.trim().split(" "); | |
for (String word : words) { | |
for (int i = 0; i < word.length(); i++) { | |
String morse = ALPHA_TO_MORSE.get(word.substring(i, i + 1).toLowerCase()); | |
builder.append(morse).append(" "); | |
} | |
builder.append(" "); | |
} | |
return builder.toString(); | |
} | |
} |
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