Can you write an algorithm to print the following pattern?

Problem statement:

Given an input string from the console as follows

Sample I/O:
aaaaa, bbbb, cccc, d , f , g , i

Sample O/P:
a5, b4, c4,d1, f1, h1, g1, i1

1. import java.util.Scanner;
2. public class SwitchStatement {
3.     public static void main(String[] args) {
4.         Scanner sc = new Scanner(System.in);
5.         System.out.println("Enter the pattern.");
6.         String pattern = sc.nextLine();
7.         System.out.println(pattern.charAt(0) + "" + pattern.length());
8.     }
9. }