/** Returns {@code true} if it leads to the automatic end of a token. */
public static boolean isTerminator(char c) {
return isOperator(Character.toString(c))
|| Character.isWhitespace(c)
|| isPunctuation(c)
|| c == ']'
|| c == ')';
}
/** Returns {@code true} if {@code c} is in the set {@code "AEIOUaeiou"}. */
public static boolean isVowel(char c) {
c = Character.toLowerCase(c);
return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
}
/** Makes the first character in the given sentence uppercase. */
public static String uppercase(String sent) {
if (sent.length() == 0) return "";
return Character.toUpperCase(sent.charAt(0)) + sent.substring(1);
}
/**
* Returns {@code true} if the first letter in the given word is a vowel.
*
* <p>Note that this will return {@code true} for things like {@code (array of number)}.
*/
private static boolean startsWithVowel(String word) {
for (int i = 0; i < word.length(); i++)
if (isVowel(word.charAt(i))) return true;
else if (Character.isAlphabetic(word.charAt(i))) return false;
return false;
}