mobilenum.java

import java.util.*;
public class mobilenum {
    static String printSequence(String arr[], String input)
    {
        String output = "";

        // length of input string
        int n = input.length();
        for (int i = 0; i < n; i++) {
            // Checking for space
            if (input.charAt(i) == ' ')
                output = output + "0";

            else {
                // Calculating index for each
                // character
                int position = input.charAt(i) - 'A';
                output = output + arr[position];
            }
        }

        // Output sequence
        return output;
    }

    // Driver Code
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        // storing the sequence in array
        System.out.println("Enter string in capital letter");
        String input=sc.nextLine();

        String str[]
            = { "2",    "22",  "222", "3",   "33", "333",
                "4",    "44",  "444", "5",   "55", "555",
                "6",    "66",  "666", "7",   "77", "777",
                "7777", "8",   "88",  "888", "9",  "99",
                "999",  "9999" };
    System.out.println(printSequence(str, input));
}
}