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Removing punctuations from a given string

  • Difficulty Level : Easy
  • Last Updated : 23 Jun, 2021

Given a string, remove the punctuation from the string if the given character is a punctuation character as classified by the current C locale. The default C locale classifies these characters as punctuation: 

!"#$%&'()*+,-./:;?@[\]^_`{|}~ 

Examples: 
 

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Input : %welcome' to @geeksforgeek<s
Output : welcome to geeksforgeeks

Input : Hello!!!, he said ---and went.
Output : Hello he said and went

 



A loop is designed that goes through a list composed of the characters and punctuations of that string, removes the punctuation and then joins them. 
 

C++




// CPP program to remove punctuation from a given string
 
#include <iostream>
using namespace std;
 
int main()
{
    // input string
    std::string str = "Welcome???@@##$ to#$% Geeks%$^for$%^&Geeks";
 
    for (int i = 0, len = str.size(); i < len; i++)
    {
        // check whether parsing character is punctuation or not
        if (ispunct(str[i]))
        {
            str.erase(i--, 1);
            len = str.size();
        }
    }
     
    // print string without punctuation
    std::cout << str;
    return 0;
}

Java




// Java program to remove punctuation from a given string
 
public class Test
{
    public static void main(String[] args)
    {
        // input string
        String str = "Welcome???@@##$ to#$% Geeks%$^for$%^&Geeks";
         
        // similar to Matcher.replaceAll
        str = str.replaceAll("\\p{Punct}","");
         
        System.out.println(str);
    }
     
}
// This code is contributed by Gaurav Miglani

Python




# Python program to remove punctuation from a given string
# Function to remove punctuation
def Punctuation(string):
 
    # punctuation marks
    punctuations = '''!()-[]{};:'"\,<>./?@#$%^&*_~'''
 
    # traverse the given string and if any punctuation
    # marks occur replace it with null
    for x in string.lower():
        if x in punctuations:
            string = string.replace(x, "")
 
    # Print string without punctuation
    print(string)
 
# Driver program
string = "Welcome???@@##$ to#$% Geeks%$^for$%^&Geeks"
Punctuation(string)

C#




// C# program to remove punctuation
// from a given string
using System;
using System.Text.RegularExpressions;                
 
class GFG
{
public static void Main()
{
    // input string
    String str = "Welcome???@@##$ to#$% Geeks%$^for$%^&Geeks";
     
    // similar to Matcher.replaceAll
    str = Regex.Replace(str,@"[^\w\d\s]","");
     
    Console.Write(str);
}
}
 
// This code is contributed
// by 29AjayKumar

Javascript




<script>
 
// JavaScript program to remove punctuation from a given string
    {
        // input string
        var str = "Welcome???@@##$ to#$% Geeks%$^for$%^&Geeks";
         
        // similar to Matcher.replaceAll
        str = str.replace(/[^a-zA-Z ]/g, "");
         
        document.write(str);
    }
     
// This code is contributed by shivanisingh
 
</script>

Output: 
 

Welcome to GeeksforGeeks

 

This article is contributed by Pramod Kumar. If you like GeeksforGeeks and would like to contribute, you can also write an article using write.geeksforgeeks.org or mail your article to review-team@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
 




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