The last requirement is not met and I don't understand why. Can someone help me out?
package com.codegym.task.task10.task1012;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
/*
Number of letters
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
// Alphabet
String abc = "abcdefghijklmnopqrstuvwxyz";
char[] abcArray = abc.toCharArray();
ArrayList<Character> alphabet = new ArrayList<>();
for (char letter : abcArray) {
alphabet.add(letter);
}
// Read in strings
ArrayList<String> list = new ArrayList<>();
for (int i = 0; i < 10; i++) {
String s = reader.readLine();
list.add(s.toLowerCase());
}
ArrayList<Character> charList = new ArrayList<Character>();
for (String w : list){
for (int x=0;x<w.length();x++){
char y = w.charAt(x);
for (int z=0;z<alphabet.size();z++){
if (y == alphabet.get(z)){
charList.add(y);
}
}
}
}
HashMap<Character, Integer> map = new HashMap<Character, Integer>();
for (int i=0;i<alphabet.size();i++){
map.put(alphabet.get(i), 0);
}
for (int i=0;i<charList.size();i++){
char x = charList.get(i);
int count = 0;
for (int j=charList.size()-1;j>0;j--){
if (x == charList.get(j)){
count++;
}
}
for (Map.Entry<Character, Integer> set : map.entrySet()){
if (x == set.getKey()){
map.replace(set.getKey(), count);
}
}
}
for (Map.Entry<Character, Integer> set : map.entrySet()){
System.out.println(set.getKey() + " " + set.getValue());
}
}
}