View difference between Paste ID: iT3FvyRZ and tp2Zkfz7

 public static class Exercise
 {
 	public static string ReverseString(string inputStr)
 	{
 		var input = new StringBuilder(inputStr);
 		var output = new StringBuilder();
 		for (var i = inputStr.Length-1; i >= 0; i--)
 		{
 			output.Append(inputStr[i]);
 		}
 
 		return output.ToString();
 	}
 
 	public static string ReverseString_InPlace(string inputStr)
 	{
 		var sb = new StringBuilder(inputStr);
 		int i = 0;
 		int j = sb.Length-1;
 		while (i != j)
 		{
 			var a = sb[i];
 			sb[i] = sb[j];
 			sb[j] = a;
 
 			i++;
 			j--;
 		}
 
 		return sb.ToString();
 	}
 }