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: Wrong Answer)

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str;
		char c;
		char cc;
		int sum[] = new int[26];
		try {
			str=br.readLine();
			for(int i=0;i<str.length();i++){
				c=str.toLowerCase().charAt(i);
				cc='a';
				for(int j=0 ; j<sum.length;j++){
					if(c==cc){
						sum[j]++;
					}
					cc++;
				}
			}
			cc='a';
			for(int i = 0 ; i < sum.length;i++){
				System.out.println(cc+"???:???"+sum[i]);
				cc++;
			}
		} catch (Exception e) {
			System.err.println(e);
		}
	}

}