Find Uncommon Characters of Two Strings in C++

In this tutorial, we will be discussing a program to find uncommon characters of the two strings.

For this we will be provided with two strings. Our task is to print out the uncommon characters of both strings in sorted order.

Example

 Live Demo

#include <bits/stdc++.h>
using namespace std;
const int LIMIT_CHAR = 26;
//finding the uncommon characters
void calculateUncommonCharacters(string str1, string str2) {
   int isthere[LIMIT_CHAR];
   for (int i=0; i<LIMIT_CHAR; i++)
      isthere[i] = 0;
      int l1 = str1.size();
      int l2 = str2.size();
   for (int i=0; i<l1; i++)
      isthere[str1[i] - 'a'] = 1;
   for (int i=0; i<l2; i++) {
      if (isthere[str2[i] - 'a'] == 1 || isthere[str2[i] - 'a'] == -1)
         isthere[str2[i] - 'a'] = -1;
      else
         isthere[str2[i] - 'a'] = 2;
   }
   for (int i=0; i<LIMIT_CHAR; i++)
      if (isthere[i] == 1 || isthere[i] == 2 )
         cout << (char(i + 'a')) << " ";
}
int main() {
   string str1 = "tutorials";
   string str2 = "point";
   calculateUncommonCharacters(str1, str2);
   return 0;
}

Output

a l n p r s u