Задача: Баланс скобок - 2

GetDiffBalanceBrackets.cs

using System;
					
public class Program
{
	private static int GetDiffBalanceBrackets(string str)
	{
		int balance = 0;
		int tempCount = 0;
		foreach (char bracket in str)
		{
			balance += bracket == '(' ? 1 : -1;
			if (balance < 0)
			{
				tempCount++;
				balance = 0;
			}
		}

		return balance + tempCount;
	}
	
	public static void Main()
	{
		Console.WriteLine("UniLecs");
		
		string str = ""; // 0
		Console.WriteLine(string.Format("Answer = {0}", GetDiffBalanceBrackets(str)));

		str = "()"; // 0
		Console.WriteLine(string.Format("Answer = {0}", GetDiffBalanceBrackets(str)));

		str = "(()(()"; // +2
		Console.WriteLine(string.Format("Answer = {0}", GetDiffBalanceBrackets(str)));

		str = "())())(("; // +4
		Console.WriteLine(string.Format("Answer = {0}", GetDiffBalanceBrackets(str)));		
	}
}