problem-solving-playground/FirstUniqueLettterSingleLoop.cpp at main · Muaz841/problem-solving-playground · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
#include<iostream>
#include<unordered_map>
#include <string>

using namespace std;

void  uniqueLetter(string data)
{
	int stringLength = data.length() ;

	 unordered_map<char, int> freq;

	  for (char ch : data)
        freq[ch]++;


	for (char ch : data)
    {
        if (freq[ch] == 1)
        {
            cout << "First Unique Letter is: " << ch << endl;
            return;
        }
    }

	 cout << "No unique character found!" << endl;
}


int main()
{
    string testStr = "GeeksForGeeks";
    uniqueLetter(testStr);

    return 0;
}