Finding repeated words on a string and counting the repetitions

Question

I need to find repeated words on a string, and then count how many times they were repeated. So basically, if the input string is this:

String s = \"House, House         


        

Answer 1

//program to find number of repeating characters in a string
//Developed by Subash


import java.util.Scanner;

public class NoOfRepeatedChar

{

   public static void main(String []args)

   {

//input through key board

Scanner sc = new Scanner(System.in);

System.out.println("Enter a string :");

String s1= sc.nextLine();


    //formatting String to char array

    String s2=s1.replace(" ","");
    char [] ch=s2.toCharArray();

    int counter=0;

    //for-loop tocompare first character with the whole character array

    for(int i=0;i1)
        {
            boolean flag=false;

            //for-loop to check whether the character is already refferenced or not 
            for (int k=i-1;k>=0 ;k-- )
            {
                if(ch[i] == ch[k] ) //if the character is already refferenced
                    flag=true;
            }
            if( !flag ) //if(flag==false) 
                counter=counter+1;
        }
    }
    if(counter > 0) //if there is/are any repeating characters
            System.out.println("Number of repeating charcters in the given string is/are " +counter);
    else
            System.out.println("Sorry there is/are no repeating charcters in the given string");
    }
}