Check if both halves of the string have same set of characters in C#

Firstly, set the string to be checked.

string s = "timetime";

Now set two counters for two halves of the string.

int []one = new int[MAX_CHAR];
int []two = new int[MAX_CHAR];

Check for both the halves of the string.

for (int i = 0, j = l - 1; i < j; i++, j--) {
   one[str[i] - 'a']++;
   two[str[j] - 'a']++;
}

The following is the complete code to check whether both the halves of the string have same set of characters or not in C#.

Example

 Live Demo

using System;
class Demo {
   static int MAX_CHAR = 26;
   static bool findSameCharacters(string str) {
      int []one = new int[MAX_CHAR];
      int []two = new int[MAX_CHAR];
      int l = str.Length;
      if (l == 1)
      return true;
      for (int i = 0, j = l - 1; i < j; i++, j--) {
         one[str[i] - 'a']++;
         two[str[j] - 'a']++;
      }
      for (int i = 0; i < MAX_CHAR; i++)
      if (one[i] != two[i])
      return false;
      return true;
   }
   public static void Main() {
      string str = "timetime";
      if (findSameCharacters(str))
      Console.Write("Yes: Two halves are same!");
      else
      Console.Write("No! Two halves are not same!");
   }
}

Output

Yes: Two halves are same!