This problem is about finding the first non-repeating character in a string. For example, if the input string is "GeeksforGeeks", then the output should be 'f '.
The candidate's solution is correct and uses a dictionary to store the characters and their counts. The time complexity of this solution is O(n) because the dictionary is iterated over once. The space complexity of this solution is O(n) because the dictionary is the same size as the input string.
Evaluated at: 2022-12-01 00:15:41