Java program to count number of duplicate words in given string

Program

//Program to count repeated words in string
public class CountWords 
{

	public static void main(String[] args)
	{
		String input="Welcome to Java Session Session Session"; 		//Input String	
		String[] words=input.split(" ");	//Split the word from String
		int wrc=1;							//Variable for getting Repeated word count
		
		for(int i=0;i<words.length;i++)		//Outer loop for Comparison		
		{
			for(int j=i+1;j<words.length;j++)	//Inner loop for Comparison
			{
				
			if(words[i].equals(words[j]))	//Checking for both strings are equal
				{
					wrc=wrc+1;				//if equal increment the count
					words[j]="0";			//Replace repeated words by zero
				}
			}
			if(words[i]!="0")
			System.out.println(words[i]+"--"+wrc);	//Printing the word along with count
			wrc=1;
			
	     }  
			
	}

}

Output

Welcome--1

to--1

Java--1

Session--3

Comments

Sanjana
         Can you please explain why we have set wrc=1; at the end
San
         if we put "Session to Java Session Session Welcome" an extra "--1" will be printed plz check with that
Deba
         Hi my name is Deba Hi my father is PK Output is Hi 2 my 2 name 1 is 2 Deba 1 father 4 PK 1 father is returning 4 which is absolutely wrong. I have coded in same way. Its only works fine when repeated words are consecutive. Code: public void wrdCnt(String input1) { input1 = input1.replace(".", ""); System.out.println(input1); String []tmp = input1.split(" "); int count = 1; for (int i = 0; i < tmp.length; i++) { for (int j = i+1; j < tmp.length; j++) { if(tmp[i].equals(tmp[j])) { count = count+1; tmp[j]="0"; System.out.println(tmp[j]+" -- "+count); } } if(tmp[i]!="0") { System.out.println(tmp[i]+" "+count); count=1; } } }

Submit