Remove Duplicate Lines

Easily remove duplicate lines from your text with this free online tool. No login required - simply paste your text, click a button, and get clean, unique lines instantly.

About

Text Input

Large text area for pasting or typing text to be processed

Remove Duplicates

Button to automatically remove all repeated lines from the input text

Copy Result

One-click button to copy the deduplicated text to clipboard

Error Handling

Validation to ensure text is entered before processing

Reference

Removing duplicate lines from text data is a common task in data cleaning and preprocessing for various applications like data analysis, information retrieval, and natural language processing. It helps eliminate redundancy and improve data quality by ensuring unique entries.

Calculation

The algorithm likely involves iterating through the lines of text, creating a set or dictionary to store unique lines, and then reconstructing the text with only the unique lines. The time complexity would depend on the specific implementation but is generally efficient for moderately large inputs.

Frequently Asked Questions

How are duplicate lines identified?
Lines with identical text content are considered duplicates, regardless of whitespace or case differences.
Will the order of lines be preserved?
Yes, the order of the remaining unique lines will be maintained from the original input.
Is there a limit on the amount of text I can process?
While there is no hard limit, processing extremely large texts may impact performance.