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.*;
import java.io.*;
 
class Main{
    public static void main(String args[])throws IOException{
       BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
       String s;
       int[] num = new int[26];
       char c;
       while((s = br.readLine())!=null){
           if(s.length()>=1200)break;
           for(int j=0; j<s.length(); j++){
               c = s.charAt(j);
               if(c>=0x41 && c<=0x5a){
                   c -= 0x41;
                   num[c] += 1;
               }else if(c>=0x61 && c<=0x7a){
                   c -= 0x61;
                   num[c] += 1;
               }
           }
       }
       for(int i=0; i<26; i++){
           c = (char)(0x61 + i);
           System.out.println(c+" : "+num[i]);    
       }
    }
}