Хэлп ми
package com.javarush.task.task18.task1821;
/*
Встречаемость символов
*/
import javafx.collections.transformation.SortedList;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.*;
public class Solution {
public static void main(String[] args) throws IOException {
FileInputStream inputStream = new FileInputStream(args[0]);
List<Integer> list = new ArrayList<>();
Map <Character, Integer> map = new HashMap<>();
Map <Character, Integer> finish = new HashMap<>();
while (inputStream.available() > 0){
int byt = inputStream.read();
list.add(byt);
}
inputStream.close();
Collections.sort(list);
int count = 0;
for (int i = 0; i < list.size(); i++){
for (int j = 1; j < list.size(); j++){
if (i == j){
count++;
list.remove(j);
j--;
}
}
map.put((char) i, count);
count = 0;
}
for (HashMap.Entry<Character, Integer> f : map.entrySet()){
char u = f.getKey();
int o = f.getValue();
System.out.println(u + " " + o);
}
}
}