Better way to generate array of all letters in the alphabet
I think that this ends up a little cleaner, you don't have to deal with the subtraction and indexing:
char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
char[] alphabet = {'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'};
This is a fun Unicode solution.
char[] alpha = new char[26]
for(int i = 0; i < 26; i++){
alpha[i] = (char)(97 + i)
}
This generates a lower-cased version of alphabet, if you want upper-cased, you can replace '97' with '65'.
Hope this helps.
Define any languages an enum, and call getAlphabet();
char[] armenianAlphabet = getAlphabet(LocaleLanguage.ARMENIAN);
char[] russianAlphabet = getAlphabet(LocaleLanguage.RUSSIAN);
// get uppercase alphabet
char[] currentAlphabet = getAlphabet(true);
System.out.println(armenianAlphabet);
System.out.println(russianAlphabet);
System.out.println(currentAlphabet);
result
I/System.out: աբգդեզէըթժիլխծկհձղճմյնշոչպջռսվտրցւփքօֆ
I/System.out: абвгдежзийклмнопрстуфхцчшщъыьэюя
I/System.out: ABCDEFGHIJKLMNOPQRSTUVWXYZ
private char[] getAlphabet(){
return getAlphabet(false);
}
private char[] getAlphabet(boolean flagToUpperCase){
Locale locale = getResources().getConfiguration().locale;
LocaleLanguage language = LocaleLanguage.getLocalLanguage(locale);
return getAlphabet(language, flagToUpperCase);
}
private char[] getAlphabet(LocaleLanguage localeLanguage, boolean flagToUpperCase){
if (localeLanguage == null)
localeLanguage = LocaleLanguage.ENGLISH;
char firstLetter = localeLanguage.getFirstLetter();
char lastLetter = localeLanguage.getLastLetter();
int alphabetSize = lastLetter - firstLetter + 1;
char[] alphabet = new char[alphabetSize];
for (int index = 0; index < alphabetSize; index++ ){
alphabet[index] = (char) (index + firstLetter);
}
if (flagToUpperCase){
alphabet = new String(alphabet).toUpperCase().toCharArray();
}
return alphabet;
}
private enum LocaleLanguage{
ARMENIAN(new Locale("hy"), 'ա', 'ֆ'),
RUSSIAN(new Locale("ru"), 'а','я'),
ENGLISH(new Locale("en"), 'a','z');
private final Locale mLocale;
private final char mFirstLetter;
private final char mLastLetter;
LocaleLanguage(Locale locale, char firstLetter, char lastLetter) {
this.mLocale = locale;
this.mFirstLetter = firstLetter;
this.mLastLetter = lastLetter;
}
public Locale getLocale() {
return mLocale;
}
public char getFirstLetter() {
return mFirstLetter;
}
public char getLastLetter() {
return mLastLetter;
}
public String getDisplayLanguage(){
return getLocale().getDisplayLanguage();
}
public String getDisplayLanguage(LocaleLanguage locale){
return getLocale().getDisplayLanguage(locale.getLocale());
}
@Nullable
public static LocaleLanguage getLocalLanguage(Locale locale){
if (locale == null)
return LocaleLanguage.ENGLISH;
for (LocaleLanguage localeLanguage : LocaleLanguage.values()){
if (localeLanguage.getLocale().getLanguage().equals(locale.getLanguage()))
return localeLanguage;
}
return null;
}
}