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Problem
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Problem: Backspace String Compare

med
30 min
Explore how to determine if two strings produce the same text after processing backspace characters. Learn the two pointers technique to solve this problem efficiently with linear time and constant space.

Statement

Given two strings s and t, return true if they produce the same result when typed into an empty text editor, where '#' represents a backspace character. Applying a backspace on an empty editor leaves it unchanged.

Note: Can you solve it in O(n)O(n) time and O(1)O(1) space?

Constraints:

  • 11 \leq s.length, t.length 200\leq 200

  • s and t contain only lowercase English letters and '#' characters

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Tap here to switch tabs
Problem
Submissions

Problem: Backspace String Compare

med
30 min
Explore how to determine if two strings produce the same text after processing backspace characters. Learn the two pointers technique to solve this problem efficiently with linear time and constant space.

Statement

Given two strings s and t, return true if they produce the same result when typed into an empty text editor, where '#' represents a backspace character. Applying a backspace on an empty editor leaves it unchanged.

Note: Can you solve it in O(n)O(n) time and O(1)O(1) space?

Constraints:

  • 11 \leq s.length, t.length 200\leq 200

  • s and t contain only lowercase English letters and '#' characters

Unlock AI-Powered LearningUpgrade to smarter learning with instant explanations of Ask Agent, Personalized Interview Prep, Real-World Projects, 3 AI Mock Interviews per month, and Personalized Paths