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: Accepted)

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);

        int[] count = new int[26];
        char[] alpha = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};

        StringBuilder input = new StringBuilder();

        while(scanner.hasNextLine()){
            String x = scanner.nextLine();
            if(x.length() == 0){
                break;
            }
            input.append(x);
        }



        char[] text = input.toString().toLowerCase().toCharArray();

        for(char txt : text){
            for(int i = 0; i < alpha.length; i++){
                if(txt == alpha[i]){
                    count[i]++;
                }
            }
        }

        for(int i = 0; i < alpha.length; i++){
            System.out.println(alpha[i] + " : " + count[i]);
        }

        scanner.close();
    }
}