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CSharp · Console

/Program.cs

	using System;
	using System.Linq;
	using System.Reflection;
	using System.Runtime.InteropServices;
    using System.Collections.Generic;
   using System.Text.RegularExpressions;

	public class Program
	{
		
		public static void Main()
		{
			string testString1 = "{[balanced(parenthesis)]}";
			string testString2 = "(test)[wrong bracket type)";
			string testString3 = "(test)[Mismatched]((sdff)";
			
			bool isValid1 = ValidateString(testString1);
			bool isValid2 = ValidateString(testString2);
			bool isValid3 = ValidateString(testString3);
			
			if (isValid1)
				Console.WriteLine("TestString1 is balanced correctly!");
			else Console.WriteLine("TestString1 is NOT balanced properly!");

			if (isValid2)
				Console.WriteLine("TestString2 is balanced correctly!");
			else Console.WriteLine("TestString2 is NOT balanced properly!");
			
			if (isValid3)
				Console.WriteLine("TestString3 is balanced correctly!");
			else Console.WriteLine("TestString3 is NOT balanced properly!");

		}
		
		public static bool ValidateString(string testString)
		{
			int p1 = 0;
			int p2 = 0;
			int p3 = 0;
			
			var lastOpener = new Stack<char>();
			
			foreach (char c in testString)
			{
				if (c == '(') {
					p1++;
					lastOpener.Push(c);
				}
				if (c == '[') {
					p2++;
					lastOpener.Push(c);
				}
				if (c == '{') {
					p3++;
					lastOpener.Push(c);
				}
				
				try {
	    			if (c == ')' && lastOpener.Pop() == '(')
	    				p1--;
	    			if (c == ']' && lastOpener.Pop() == '[')
	    				p2--;
	        			if (c == '}' && lastOpener.Pop() == '{')
	   				p3--;
				} catch { return false; }
			}
			
			if (p1 != 0 || p2 != 0 || p3 != 0)
				return false;
			return true;
		}
	}