Description

To print unique word from a string using set
    Step 1: Split the string from space and store it into a array of string to
    get all words.
    Step 2: Store all array of string into set one by one. As set does not contain
    duplicate, the output will be the unique word of string.

Example: str : this is java and java is good
         output : java
                  and
                  this
                  is
                  good

C/C++

Program is Not Available in C. Please visit Java Code

Java

/* Java program to print unique word of a string using set*/
//Save it as PrintUniqueWordUsingSet.java

import java.io.*;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;
import java.util.Set;

public class PrintUniqueWordUsingSet {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter a string : ");
        String str = scanner.nextLine();
        str = str.trim();

        System.out.println("Entered String is : " + str);
        
        //Splitting the set by space separated
        String strArray[] = str.split(" ");
        
        //Declaring the set
        Set<String> set = new HashSet<>();
        
        //Storing the string from array into set
        for(int i=0;i<strArray.length;i++) {
            set.add(strArray[i]);
        }
        
        //Printing the element using iterator in java
        
        /*Iterator itr = set.iterator();

        while(itr.hasNext()){
            System.out.print(itr.next()+" ");
        }*/
        
        //Printing the set element using lambda expression
        set.forEach(e->{
            System.out.print(e+" ");
        });
    }
}

Input:
Enter a string : 
this is java and java is good

Output:
Entered String is : this is java and java is good
java and this is good

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