/* Given a string, count the number of words ending in 'y' or 'z' -- so the * 'y' in "heavy" and the 'z' in "fez" count, but not the 'y' in "yellow" * (not case sensitive). We'll say that a y or z is at the end of a word if * there is not an alphabetic letter immediately following it. */ public int countYZ(String str) { if(str.length() == 0) return 0; int count = 0; for(int i = 0; i <= str.length() - 2; i++) { if((Character.toLowerCase(str.charAt(i)) == 'y' || Character.toLowerCase(str.charAt(i)) == 'z') && !Character.isLetter(str.charAt(i+1))) count++; } if(Character.toLowerCase(str.charAt(str.length() - 1)) == 'y' || Character.toLowerCase(str.charAt(str.length() - 1)) == 'z') count++; return count; }