Problem 27
Description
This problem was asked by Facebook.
Given a string of round, curly, and square open and closing brackets, return whether the brackets are balanced (well-formed).
For example, given the string ([])[]({}), you should return true.
Given the string ([)] or (((), you should return false.
Solutions
參考 leet code
https://leetcode.com/problems/valid-parentheses/
假設題目如下
class Solution {
fun isValid(s: String): Boolean {
}
}