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

        String s;
        int[] counter = new int[26];
        char temp;

        s = scanner.nextLine();
        for(int i = 0; i < s.length(); i++){
            temp = s.charAt(i);
            if(temp >= 'A' && temp <= 'Z'){
                int index = temp - 'A';
                counter[index]++;
            }
            else if(temp >= 'a' && temp <= 'z'){
                int index = temp - 'a';
                counter[index]++;
            }
        }
        for(int i = 0; i < 26; i++){
            System.out.println((char)(i+'a') + " : "+ counter[i]);
        }
    }
}