Remove Duplicates from String Problem Statement

You are provided a string STR of length N, consisting solely of lowercase English letters.

Your task is to remove all duplicate occurrences of characters in the string.

Example:

Input:

abcadeecfb

Output:

abcdef

Explanation:

After removing duplicates, the string becomes abcdef.

Constraints:

1 ≤ N

Question

You are provided a string STR of length N, consisting solely of lowercase English letters.

Your task is to remove all duplicate occurrences of characters in the string.

abcadeecfb

abcdef

After removing duplicates, the string becomes abcdef.

Accepted Answer

Remove duplicate occurrences of characters in a given string of lowercase English letters.

Iterate through the string and keep track of characters seen so far using a set.
Append characters to a new string only if they are not already in the set.
Return the new string without duplicate characters.