isAlphabeticalCharacter function

bool isAlphabeticalCharacter(
  1. String character
)

Check if a character is alphabetical

Implementation

bool isAlphabeticalCharacter(String character) {
  return (character.compareTo('a') >= 0 && character.compareTo('z') <= 0) ||
      (character.compareTo('A') >= 0 && character.compareTo('Z') <= 0);
}