Untitled

# include<bits/stdc++.h> 
using namespace std; 
  
// Since only lower case characters are there 
const int MAX_CHAR = 26; 
  
// Function to print the string 
void printGrouped(string str) 
{ 
    int n = str.length(); 
  
    // Initialize counts of all characters as 0 
    int  count[MAX_CHAR] = {0}; 
  
    // Count occurrences of all characters in string 
    for (int i = 0 ; i < n ; i++) 
        count[str[i]-'a']++; 
  
    // Starts traversing the string 
    for (int i = 0; i < n ; i++) 
    { 
        // Print the character till its count in 
        // hash array 
        while (count[str[i]-'a']--) 
            cout << str[i]; 
  
        // Make this character's count value as 0. 
        count[str[i]-'a'] = 0; 
    } 
} 
  
// Driver code 
int main() 
{ 
    string str = "geeksforgeeks"; 
  
    printGrouped(str); 
  
    return 0; 
}