using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Simple
{
    class Program
    {

        #region valid
        static string validString = "" +
            "//Conmet[[[\n" +
            "/*" +
            "asd[]]]]" +
            "*/" +
            "int a = 0;" +
            "int b = 10;" +
            "while(a+b<100){" +
            "a++;" +
            "str = \"asd\"" +
            "};";
        #endregion
        #region not valid
        static string notValidString = "" +
            "int a = {0;" +
            "(int b = 10;" +
            "while}(a+b<100){" +
            "a++;)" +
            "};";
        #endregion
        static void Main(string[] args)
        {
            List<string> strings = new List<string>() { validString, notValidString, "{[(])}", "}", "'][{}]]'", "//my name is [asd[}\n"};
            foreach (var str in strings)
            {
                Console.WriteLine($"string is { CheckValid(str)}");
            }

        }
        public static readonly string[] symbs = { "{", "[","(","\"","'","}","]",")"};
        private static bool CheckValid(string str){
            if (str == null)
                throw new ArgumentException("String is null");
            var s = Regex.Matches(str, "[\\(\\{\\[\\]\\}\\)'\"\n]|(?:[\\/\\*].)|([\\/\\/].)/g").ToArray();
            List<string> lex = new List<string>();
            foreach(var a in s)
            {
                lex.Add(a.Value);
            }


            Stack<string> opens = new Stack<string>();
            foreach(var c in lex){
                if(opens.Count>0)
                {
                    if (opens.Peek() == "//" && c != "\n")
                        continue;

                    if (opens.Peek() == "/*" && c != "*/")
                        continue;
                }
                switch(c){
                    case "{":
                    case "[":
                    case "(":
                    case @"//":
                    case @"/*":
                        opens.Push(c);
                        continue;
                    case "'":
                    case "\"":
                        if (opens.Count == 0 || opens.Peek() != c){
                            opens.Push(c);
                            continue;}
                        break;
                }
                //Закрывающие
                if (opens.Count == 0)
                    return false;
                if (opens.Peek() == "'" && c != "'")
                    continue;
                if (opens.Peek() == "\"" && c != "\"")
                    continue;

                switch (c){
                    case "}":
                        if (opens.Peek() == "{")
                            opens.Pop();
                        break;
                    case "]":
                        if (opens.Peek() == "[")
                            opens.Pop();
                        break;
                    case ")":
                        if (opens.Peek() == "(")
                            opens.Pop();
                        break;
                    case "\"":
                        if (opens.Peek() == "\"")
                            opens.Pop();
                        break;
                    case "'":
                        if (opens.Peek() == "'")
                            opens.Pop();
                        break;
                    case "\n":
                        if (opens.Peek() == "//")
                            opens.Pop();
                        break;
                    case "*/":
                        if (opens.Peek() == "/*")
                            opens.Pop();
                        break;}}
            return !opens.Any();
        }
    }
}