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@ssaurel
Last active April 24, 2017 07:35
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MorseCode object
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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