Implement a Text Wrapping Algorithm for Design Text Boxes
Last updated: April 5, 2025
Quick Overview
Implement a text wrapping algorithm that breaks text into lines to fit within a fixed-width text box, handling word breaks, hyphenation hints, and minimum raggedness.
Canva
April 5, 20258
5
1,934 solved
Implement a text wrapping algorithm that breaks text into lines to fit within a fixed-width text box, handling word breaks, hyphenation hints, and minimum raggedness.
Text rendering is a fundamental part of Canva's design editor. When users type text into a text box, the editor must wrap text intelligently to look visually appealing. This goes beyond simple word wrapping to consider typographic quality.
What the Interviewer Expects
- Implement basic greedy word wrapping that respects word boundaries
- Implement optimal wrapping using dynamic programming for minimum raggedness
- Handle edge cases (single long words, empty text, very narrow boxes)
- Consider proportional font widths rather than fixed-width characters
Key Topics to Cover
How to Approach This
- Clarify input constraints and edge cases before writing code.
- Walk through your approach verbally and confirm with the interviewer before coding.
- Start with a brute force solution, then optimize. Mention time and space complexity.
- Test your solution with examples, including edge cases like empty input or duplicates.
- Consider common patterns: sliding window, two pointers, hash map, BFS/DFS, dynamic programming.
Possible Follow-up Questions
- How would you handle text wrapping for bidirectional text (mixed English and Arabic)?
- How would you implement soft hyphenation for long words?
- How would you optimize for real-time wrapping as the user types?
Sharpen Your Skills on Codemia
Practice similar problems with our interactive workspace, get AI feedback, and track your progress.
Practice DSA ProblemsSample Answer
Problem Analysis
To implement a text wrapping algorithm for a fixed-width text box, we need to consider a few patterns. The greedy approach can be used for initial word wrapping, which ensures that words are not split...
Approach
- Input Handling: Start by reading the input text and the width of the text box.
- Greedy Word Wrapping: Split the text into words. For each word, try to add it to the current line. If the ...
Submit Your Answer
