PYTHON PROBLEM 042 · Beginner

Remove duplicate characters

Keep only the first appearance of each character in a word.

set · ordersetorder

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests remove duplicate characters. It belongs to the Strings and Text Processing roadmap and uses the set · order pattern.

Indexing, slicing, searching, formatting, normalization, and character-by-character logic.

COMPLETE WORKSPACE

Learn the plan, trace the logic and run the solution

Complete access unlocks the full statement, two verified examples, visual execution plan, hints, browser compiler, solution and line-by-line interpretation.

Unlock all 180 lessons · ₹599One full year · one payment · no automatic renewal

SKILL TO CARRY FORWARD

Pattern relevance

This exercise strengthens set · order. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.