Added solution to problem 2

ProblemSelection.ts

@@ -25,17 +25,19 @@
 const readlineSync = require("readline-sync");
 import { Problem } from "./Problems/Problem";
 import { Problem1 } from "./Problems/Problem1";
+import { Problem2 } from "./Problems/Problem2";
 
 
 export class ProblemSelection{
 	//Holds the valid problem numbers
-	public static PROBLEM_NUMBERS = [1];
+	public static PROBLEM_NUMBERS: number[] = [1, 2];
 
 	//Returns the problem corresponding to the given problem number
 	public static getProblem(problemNumber: number): Problem{
 		let problem: Problem  = null;
 		switch(problemNumber){
-			case 1  : problem = new Problem1(); break;
+			case 1 : problem = new Problem1(); break;
+			case 2 : problem = new Problem2(); break;
 		}
 		return problem;
 	}