Dsa
Strings
Easy
Remove Duplicate Words
Write a function that takes a sentence and removes any duplicate words, maintaining the original order of first occurrences. The words are case-insensitive.
Input format:
- A single line containing the sentence.
Output format:
- A single line with words that are unique and in the order they first appeared.
Example:
Input:
Hello hello world hello
Output:
Hello world
Key concepts
stringsduplicatesset
Practise this out loud — free
Start a mock interview on THIS exact question — a voice AI interviewer opens with it, pushes back like a real onsite, then hands you an instant scorecard.
🎙 Practise this question now