How to check open close brackets without stack.
In this example we checked with ( and [ brackets.
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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Davaleba2 { class Program { static void Main(string[] args) { string s, ss, opens = null; s = Console.ReadLine(); if (s.Length % 2 != 0) { Console.WriteLine("False"); Console.ReadLine(); } else { for (int i = 0; i < s.Length; i++) { if (s[i] == ')' || s[i] == ']') { int temp; temp = opens.Length; if (temp > 0) { ss = damxurvelisPovna(opens[temp - 1].ToString(), s[i].ToString()); if (ss == "True") { string sss = null; for (int j = 0; j < opens.Length - 1; j++) { sss = sss + opens[j]; } opens = sss; } else { Console.WriteLine("False"); Console.ReadLine(); } } else { Console.WriteLine("False"); Console.ReadLine(); } } if (s[i] == '(' || s[i] == '[') { opens = opens + s[i]; } } if (opens == null) Console.WriteLine("True"); else Console.WriteLine("False"); Console.ReadLine(); } string damxurvelisPovna(string source, string destination) { string res = null; if (source == "(" && destination == ")") res = "True"; else if (source == "[" && destination == "]") res = "True"; else res = "False"; return res; } } } } |