plz help..
package com.codegym.task.task10.task1012;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
/*
Number of letters
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String abc = "abcdefghijklmnopqrstuvwxyz";
char[] abcArray = abc.toCharArray();
ArrayList<Integer> number = new ArrayList<>(Arrays.asList(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0));
ArrayList<Character> alphabet = new ArrayList<>();
for (char letter : abcArray) {
alphabet.add(letter);
}
ArrayList<String> list = new ArrayList<>();
for (int i = 0; i < 10; i++) {
String s = reader.readLine();
list.add(s.toLowerCase());
}
for(String x : list)
{
for(int i = 0 ; i < x.length() - 1 ; i++)
{
char ch = x.charAt(i);
for (int j = 0 ; j < alphabet.size() ; j++)
{
if(ch == alphabet.get(j))
{
int p = number.get(j);
number.add(j , (p+1));
}
}
}
}
for(int i = 0 ; i < alphabet.size() ; i++)
{
System.out.println(alphabet.get(i) + " " + number.get(i));
}
}
}