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){
        try(Scanner sc = new Scanner(System.in)){
            int[] counts = new int[128];
            while(sc.hasNext()){
                String str = sc.nextLine().toLowerCase();

                for(int i=0;i<str.length();i++){
                    counts[str.charAt(i)]++;
                }
            }
            for(char ch = 'a'; ch<= 'z'; ch++){
                    System.out.println(ch+" : "+counts[ch]);
            }
        }
    }    
}