/**

​

Maximum Occurrence

​

Given a string text. 

Write a function that returns the character with the highest frequency. 

If more than 1 character has the same highest frequency, return all those characters as a comma separated string.

If there is no repetition in characters, return "No Repetition".

​

Example

​

MaxOccur("Computer Science") ➞ "e"

​

MaxOccur("Edabit") ➞ "No Repetition"

​

MaxOccur("system admin") ➞ "m, s"

​

MaxOccur("the quick brown fox jumps over the lazy dog") ➞ " "

​

**/

public class Program

{

    public static void Main(string txt)

    {

    string str;

    int[] ch_fre = new int[255];

    int i = 0, max, l;

    int ascii;

     System.Console.WriteLine("\n\nFind maximum occurring character in a string :\n");

     System.Console.WriteLine("--------------------------------------------------\n");  

     System.Console.WriteLine("Input the string : ");

     str = System.Console.ReadLine();   

     l=str.Length;

​

    for(i=0; i<255; i++)  //Set frequency of all characters to 0

    {

        ch_fre[i] = 0;

    }

    /* Read for frequency of each characters */

    i=0;

    while(i<l)

    {

        ascii = (int)str[i];

        ch_fre[ascii] += 1;

​

        i++;

    }

// Console.Write("{0}  ",(char)65);

    max = 0;

    for(i=0; i<255; i++)

    {

        if(ch_fre[i] > ch_fre[max])

            max = i;

    }

  System.Console.WriteLine("The Highest frequency of character '{0}' is appearing for number of times : {1} \n\n", (char)max, ch_fre[max]);

    }

}