Deleting Duplicate Characters of String

We have explored the problem of Deleting Duplicate Characters of String such that the resulting string is lexicographically the smallest among all possibilities.

Table of Contents:ProblemLexicographical orderExampleObservationsSolution 1ImplementationComplexitySolution 2Implementation2Complexity2Problem Statement

Given a string, our goal is to remove duplicate letters such that in the resulting string every letter appears exactly once and is in smallest lexicographical order of all ...