[Leetcode] Longest Valid Parentheses
Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. ...
原文：longest valid parentheses方法歸納
題目大意見leetcode，下面我稍微介紹下想到的三種方法： 方法一：不用棧去找匹配 建立一個數組l 表示匹配，然后i從 開始，看到 就把l 對應的數值記為 ，直到看到 ，找到 以后，從當前i開始返回去找是否有匹配，此時如讀到 ，就看當前的l 的對應位置值是否為 ，如果不是就跳轉到所對應的值的位置，繼續往前找，直到找到第一個 ，將l 對應值置為此時 的下標，進行下一次操作。如果是 ，就把當前l ...
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