Cant verify and i do not know why...
It says that the program does not display text on the screen, which it obviously does...
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> listChars = new ArrayList<>();
for(int i=0;i<list.size();i++){
for(char x : list.get(i).toCharArray()){
listChars.add(x);
}
}
HashMap<Character, Integer> map = new HashMap<>();
for(int i=0;i<alphabet.size();i++){
map.put(alphabet.get(i), 0);
}
for(int i=0;i<alphabet.size();i++){
char c = listChars.get(i);
if(!map.containsKey(c)){
map.put(c, 1);}
else{
map.put(c, map.get(c)+1);
}
}
for(char x : abcArray){
System.out.println(x + " " + map.get(x));
}
}
}