Move all special char to the end of the String

In this article, we will learn how to move all special char to the end of the String.

Examples:

Input : !@$%^&*AJAY
Output :AJAY!@$%^&*

Input :Geeksf!@orgeek@s A#$ c%o^mputer s****cience p#o@rtal fo@r ge%eks
Output :Geeksforgeeks A computer science portal for geeks!@@#$%^****#@@%

Prerequisite : Regular Expressions in Java



The idea is to traverse input string and maintain two strings, one string that contains normal characters (a, A, 1, ‘ ‘, etc) and other string that maintains special characters (@, $, etc). Finally, concatenate the two strings and return.

Here is the implementation of above approach

C++

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// C++ program move all special char to the end of the string
  
#include <bits/stdc++.h>
using namespace std;
  
// Function return a string with all special
// chars to the end
string moveAllSC(string str)
{
    // Take length of string
    int len = str.length();
  
    // traverse string
    string res1 = "", res2 = "";
    for (int i = 0; i < len; i++)
    {
        char c = str.at(i);
  
        // check char at index i is a special char
        if (isalnum(c) || c == ' ')
            res1 += c;
        else
            res2 += c;
    }
  
    return res1 + res2;
}
  
// Driver code
int main()
{
    string str1("Geeksf!@orgeek@s A#$ c%o^mputer");
    string str2(" s****cience p#o@rtal fo@r ge%eks");
    string str = str1 + str2;
    cout << moveAllSC(str) << endl;
    return 0;
}
  
// This code is contributed by
// sanjeev2552

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Java














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// Java program move all special char to the end of the string 


class GFG1 { 


  


    // Function return a string with all special  


    // chars to the end 


    static String moveAllSC(String str) 


    { 


        // Take length of string 


        int len = str.length(); 


  


        // regular expression for check char is special 


        // or not. 


        String regx = "[a-zA-Z0-9\\s+]"; 


  


        // traverse string 


        String res1 = "", res2 = ""; 


        for (int i = 0; i < len; i++) { 


          


            char c = str.charAt(i); 


  


            // check char at index i is a special char 


            if (String.valueOf(c).matches(regx))  


               res1 = res1 + c; 


            else


               res2 = res2 + c; 


        } 


        return res1 + res2; 


    } 


  


    public static void main(String args[]) 


    { 


        String str = "Geeksf!@orgeek@s A#$ c%o^mputer"


                     + " s****cience p#o@rtal fo@r ge%eks"; 


        System.out.println(moveAllSC(str)); 


    } 


} 



















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Python3














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# Python3 program move all special char  


# to the end of the string  


  


# Function return a string with all  


# special chars to the end  


def moveAllSC(string):  


      


    # Take length of string  


    length = len(string) 


  


    # Traverse string  


    res1, res2 = "", ""  


    for i in range(0, length):  


          


        c = string[i]  


  


        # check char at index i is a special char  


        if c.isalnum() or c == " ":  


            res1 = res1 + c  


        else: 


            res2 = res2 + c  


          


    return res1 + res2  


      


# Driver Code 


if __name__ == "__main__":  


      


    string = "Geeksf!@orgeek@s A#$ c%o^mputer" \ 


            +" s****cience p#o@rtal fo@r ge%eks"


      


    print(moveAllSC(string))  


      


# This code is contributed by Rituraj Jain 



















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C#














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// C# program move all special char  


// to the end of the string 


using System; 


using System.Text.RegularExpressions; 


  


class GFG 


{ 


  


    // Function return a string with all  


    // special chars to the end 


    static String moveAllSC(String str) 


    { 


        // Take length of string 


        int len = str.Length; 


  


        // regular expression to check  


        // char is special or not. 


        var regx = new Regex("[a-zA-Z0-9\\s+]"); 


  


        // traverse string 


        String res1 = "", res2 = ""; 


        for (int i = 0; i < len; i++) 


        { 


            char c = str[i]; 


  


            // check char at index i is a special char 


            if (regx.IsMatch(c.ToString()))  


                res1 = res1 + c; 


            else


                res2 = res2 + c; 


        } 


        return res1 + res2; 


    } 


  


    public static void Main(String []args) 


    { 


        String str = "Geeksf!@orgeek@s A#$ c%o^mputer" +  


                     " s****cience p#o@rtal fo@r ge%eks"; 


        Console.WriteLine(moveAllSC(str)); 


    } 


} 


  


// This code is contributed by PrinciRaj1992 



















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Output:


Geeksforgeeks A computer science portal for geeks!@@#$%^****#@@%







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