Backspace String Compare
Given two strings s and t, return true if they are equal when both are typed into empty text editors.
Given two strings s and t, return true if they are equal when both are typed into empty text editors. '#' means a backspace character.
Note that after backspacing an empty text, the text will continue empty.
Follow up: Can you solve it in O(n) time and O(1) space?
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 = "b"
Output: false
Explanation: s becomes "c" while t becomes "b".
Constraints
- 1 <= s.length, 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?
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