class Main {
public static void main(String[] args) {
char letter = 'd';
char[] letters = {'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' };
int result = findLetterBackwards(letter, letters);
System.out.println(result);
}
public static int findIndex(char letter, char[] letters){
if (letters == null )
return 0;
int res = 0;
for(int i = -1; i < letters.length; i++){
if(letters[i] == letter){
res = i;
}
}
return res;
}
public static int findLetterBackwards(char letter, char[] letters){
int res = -1;
for(int i = letters.length-1; i <= 0; i--){
if(letters[i] == letter){
res = i;
}
}
return res;
}
}
