# Print all the non-repeating words from the two given sentences

Given two strings A and B, the task is to print all the non-repeating words out of the two given sentences.
Examples:

Input: A = “I have a blue pen”, B = “I got a red pen”
Output: have blue got red
Explanation:
The words have, blue, got and red have not been repeated in either the same sentence or another sentence.
Input: A = “I am going to park”, B = “I am in park”
Output: going to in

Approach: The idea is to iterate over all the words and check if the word is being repeated or not. Therefore, the following steps can be followed to compute the answer:

1. Concatenate both the string and store it in another string variable.
2. Extract one word from the concatenated string.
3. If that word is present in either A or in B, then print it. Else, continue for the remaining words.

Below is the implementation of the above approach:

## C++

 `// C++ program to print all the` `// non-repeating words from the` `// two given sentences`   `#include ` `#include ` `using` `namespace` `std;`   `// Function to print all the` `// non-repeating words from the` `// two given sentences` `void` `removeRepeating(string s1, string s2)` `{` `    ``// Concatenate the two strings` `    ``// into one` `    ``string s3 = s1 + ``" "` `+ s2 + ``" "``;` `    ``string words = ``""``;` `    ``int` `i = 0;`   `    ``// Iterating over the whole` `    ``// concatenated string` `    ``for` `(``auto` `x : s3) {` `        ``if` `(x == ``' '``) {`   `            ``// Searching for the word in A.` `            ``// If while searching, we reach` `            ``// the end of the string, then` `            ``// the word is not present in` `            ``// the string` `            ``if` `(s1.find(words) == string::npos` `                ``|| s2.find(words) == string::npos)` `                ``cout << words;`   `            ``// Initialise word for the` `            ``// next iteration` `            ``words = ``""``;` `        ``}` `        ``else` `{` `            ``words = words + x;` `        ``}` `    ``}` `}`   `// Driver code` `int` `main()` `{` `    ``string s1 = ``"I have go a pen"``;` `    ``string s2 = ``"I want to go park"``;` `    ``removeRepeating(s1, s2);` `    ``return` `0;` `}`

## Java

 `// Java program to print all the` `// non-repeating words from the` `// two given sentences` `class` `GFG{`   `// Function to print all the` `// non-repeating words from the` `// two given sentences` `static` `void` `removeRepeating(String s1, String s2)` `{` `    `  `    ``// Concatenate the two Strings` `    ``// into one` `    ``String s3 = s1 + ``" "` `+ s2 + ``" "``;` `    ``String words = ``""``;` `    ``int` `i = ``0``;`   `    ``// Iterating over the whole` `    ``// concatenated String` `    ``for``(``char` `x : s3.toCharArray())` `    ``{` `       ``if` `(x == ``' '``)` `       ``{` `           `  `           ``// Searching for the word in A.` `           ``// If while searching, we reach` `           ``// the end of the String, then` `           ``// the word is not present in` `           ``// the String` `           ``if` `(!s1.contains(words) || ` `               ``!s2.contains(words))` `               ``System.out.print(words);` `           `  `           ``// Initialise word for the` `           ``// next iteration` `           ``words = ``" "``;` `       ``}` `       ``else` `       ``{` `           ``words = words + x;` `       ``}` `    ``}` `}`   `// Driver code` `public` `static` `void` `main(String[] args)` `{` `    ``String s1 = ``"I have go a pen"``;` `    ``String s2 = ``"I want to go park"``;` `    `  `    ``removeRepeating(s1, s2);` `}` `}`   `// This code is contributed by sapnasingh4991`

## Python3

 `# Python 3 program to print all the` `# non-repeating words from the` `# two given sentences`   `# Function to print all the` `# non-repeating words from the` `# two given sentences` `def` `removeRepeating(s1, s2):`   `    ``# Concatenate the two` `    ``# strings into one` `    ``s3 ``=` `s1 ``+` `" "` `+` `s2 ``+` `" "` `    ``words ``=` `""` `    ``i ``=` `0`   `    ``# Iterating over the whole` `    ``# concatenated string` `    ``for` `x ``in` `s3:` `        ``if` `(x ``=``=` `' '``):`   `            ``# Searching for the word in A.` `            ``# If while searching, we reach` `            ``# the end of the string, then` `            ``# the word is not present in` `            ``# the string` `            ``if` `(words ``not` `in` `s1 ``or` `                ``words ``not` `in` `s2):` `                ``print``(words, end ``=` `"")`   `            ``# Initialise word for the` `            ``# next iteration` `            ``words ``=` `" "`   `        ``else``:` `            ``words ``=` `words ``+` `x`   `# Driver code` `if` `__name__ ``=``=` `"__main__"``:`   `    ``s1 ``=` `"I have go a pen"` `    ``s2 ``=` `"I want to go park"` `    ``removeRepeating(s1, s2)`   `# This code is contributed by Chitranayal`

## C#

 `// C# program to print all the` `// non-repeating words from the` `// two given sentences` `using` `System;` `class` `GFG{` ` `  `// Function to print all the` `// non-repeating words from the` `// two given sentences` `static` `void` `removeRepeating(``string` `s1, ` `                            ``string` `s2)` `{` `     `  `    ``// Concatenate the two Strings` `    ``// into one` `    ``string` `s3 = s1 + ``" "` `+ s2 + ``" "``;` `    ``string` `words = ``""``;` `    ``int` `i = 0;` ` `  `    ``// Iterating over the whole` `    ``// concatenated String` `    ``foreach``(``char` `x ``in` `s3.ToCharArray())` `    ``{` `       ``if` `(x == ``' '``)` `       ``{` `            `  `           ``// Searching for the word in A.` `           ``// If while searching, we reach` `           ``// the end of the String, then` `           ``// the word is not present in` `           ``// the String` `           ``if` `(!s1.Contains(words) || ` `               ``!s2.Contains(words))` `               ``Console.Write(words);` `            `  `           ``// Initialise word for the` `           ``// next iteration` `           ``words = ``" "``;` `       ``}` `       ``else` `       ``{` `           ``words = words + x;` `       ``}` `    ``}` `}` ` `  `// Driver code` `public` `static` `void` `Main(``string``[] args)` `{` `    ``string` `s1 = ``"I have go a pen"``;` `    ``string` `s2 = ``"I want to go park"``;` `     `  `    ``removeRepeating(s1, s2);` `}` `}`   `// This code is contributed by rutvik_56`

Output:

```have a pen I want to park

```

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