Solving Backspace String Compare in Javascript. Please try yourself first to solve the problem and submit your implementation to LeetCode before looking into solution.

Problem Description

Given two strings S and T, return if they are equal when both are typed into empty text editors. # means a backspace character.

Example 1:

Input: S = "ab#c", T = "ad#c"
Output: true

Explanation: Both S and T become "ac".

Example 2:

Input: S = "ab##", T = "c#d#"
Output: true

Explanation: Both S and T become "".

Example 3:

Input: S = "a##c", T = "#a#c"
Output: true

Explanation: Both S and T become "c".

Example 4:

Input: S = "a#c", T = "b"
Output: false

Explanation: S becomes "c" while T becomes "b".

Note:

  • 1 <= S.length <= 200
  • 1 <= T.length <= 200

S and T only contain lowercase letters and '#' characters.

Follow up: Can you solve it in O(N) time and O(1) space?

See the full details of the problem Backspace String Compare at LeetCode

Originally posted at: @github.com/ignacio-chiazzo/Algorithms-Leetcode-Javascript