【leetcode_easy_stack】1021. Remove Outermost Parentheses

problem

​​1021. Remove Outermost Parentheses​​

solution#1: stack；

code

 

solution#2: 

code

 

参考

1. ​​leetcode_easy_stack_1021. Remove Outermost Parentheses​​;

2. ​​【leetcode刷题】1021. Remove Outermost Parentheses​​;

完