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 <= 2001 <= T.length <= 200S and T only contain lowercase letters and ‘#‘ characters.Follow up:
O(N) time and O(1)space?
s
参考资料：
https://leetcode.com/problems/backspace-string-compare/
[LeetCode] Backspace String Compare 回车字符串比较
原文：https://www.cnblogs.com/grandyang/p/10447783.html