Problem:
Counting Characters

Write a program which counts and reports the number of each alphabetical letter. Ignore the case of characters.

Input

A sentence in English is given in several lines.

Output

Prints the number of alphabetical letters in the following format:

a : The number of 'a'
b : The number of 'b'
c : The number of 'c'
.
.
z : The number of 'z'

Constraints

The number of characters in the sentence < 1200

Sample Input

This is a pen.

Sample Output

a : 1
b : 0
c : 0
d : 0
e : 1
f : 0
g : 0
h : 1
i : 2
j : 0
k : 0
l : 0
m : 0
n : 1
o : 0
p : 1
q : 0
r : 0
s : 2
t : 1
u : 0
v : 0
w : 0
x : 0
y : 0
z : 0

Solution in JAVA (judge verdict: WA: Presentation Error)


import java.util.*;
import java.io.*;

public class Main {
	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		char c;
		String s;
		s = "";// ?????????

		// a~z?????§???????????????????´????????????????
		List<String> list = new ArrayList<String>();
		// a~z?????§???????´?(26??????
		list.add("a");
		list.add("b");
		list.add("c");
		list.add("d");
		list.add("e");
		list.add("f");
		list.add("g");
		list.add("h");
		list.add("i");
		list.add("j");
		list.add("k");
		list.add("l");
		list.add("m");
		list.add("n");
		list.add("o");
		list.add("p");
		list.add("q");
		list.add("r");
		list.add("s");
		list.add("t");
		list.add("u");
		list.add("v");
		list.add("w");
		list.add("x");
		list.add("y");
		list.add("z");

		// ?????°???????´????????????????
		List<Integer> list2 = new ArrayList<Integer>();
		// ?????????0???????´?(26??????
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);
		list2.add(0);

		// ??????????????????
		String str = br.readLine();

		// ????????°????????????
		for (int count = 0; count < str.length(); count++) {
			c = str.charAt(count);
			// ?????????????°????????????????
			s = String.valueOf(c).toLowerCase();
			// 26?????????????????????
			for (int i = 0; i < 26; i++) {
				// ????????±???????????£?????´??????list2?????°??????+??????
				if (list.get(i).equals(s)) {
					list2.set(i, list2.get(i) + 1);
				}
			}
		}

		// ??¨?????????
		StringBuilder sb = new StringBuilder();
		for (int count2 = 0; count2 < 26; count2++) {
			sb.append(list.get(count2));
			sb.append(" : ");
			sb.append(list2.get(count2));
			sb.append("\n");
		}
		// ????????????????????????
		sb.deleteCharAt(sb.length() - 1);
		System.out.print(new String(sb));

	}
}