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.*;

public class Main {
	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		int[] AtoZ = new int[26];
		String s = sc.nextLine();
		for (int i=0; i<s.length(); i++) {
			char c = s.charAt(i);
			if (c>=65&&c<=90 || c>=97&&c<=122) {
				if (c>=65&&c<=90) {c += 32;}
				int n = (char)(c-97);
				AtoZ[n]++;
			}
		}
		for (int i=0; i<26; i++) {
			char c = (char)(i+97);
			System.out.println(c+" "+":"+" "+AtoZ[i]);
		}
	}
}