// 5. How do you find duplicate numbers in an array if it contains multiple duplicates? (solution)
		void Question5(int[] arr)
		{
			var h = new HelperFunctions();
			h.ArrayPrinter(arr);
			h.ArrayAscendingSorter(arr);
			h.DuplicateDetailsFinder(arr);
		}
		// 1. How do you find the missing number in a given integer array of 1 to 100? (solution)
		void Question1(int[] arr)
		{
			Console.WriteLine("Hello World!");
			var h = new HelperFunctions();
			h.ArrayPrinter(arr);
			h.ArrayAscendingSorter(arr);
			// Since arrays are passed by value, 
			// the array doesn't need to be passed around
			h.ArrayPrinter(arr);
			h.FindMissingNumberFromSortedArray(arr);
		}