/******************************************************************************
 * This program reads characters from STDIN and then computes a frequency table.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.pureprogrammer.Utils;

public class FrequencyTableChars {

    public static void main(String[] args) {
        int totalCount = 0;
        Map<Integer, Integer> countTable = new HashMap<>();
        int c;
        while ((c = Utils.getchar()) != -1) {
            if (!countTable.containsKey(c)) {
                countTable.put(c, 1);
            } else {
                countTable.put(c, countTable{c} + 1);
            }
            ++totalCount;
        }

        System.out.println("Hex\tChar\tCount\tFreq");
        final List<Integer> sortedKeys = Utils.sort(List.copyOf(countTable.keySet()));
        for (int x : sortedKeys) {
            final double FREQ = countTable.get(x) / (double)(totalCount);
            if (Character.isISOControl(x)) {
                System.out.println(Utils.format("{0:05x}\t0x{0:x}\t{1:d}\t{2:.4f}", x, countTable.get(x), FREQ));
            } else {
                System.out.println(Utils.format("{0:05x}\t{1:c}\t{2:d}\t{3:.4f}", x, String.valueOf(Character.toChars(x)), countTable.get(x), FREQ));
            }
        }
    }
}