606. Construct String from Binary Tree 606. Construct String from Binary Tree # Definition for a binary
209. Minimum Size Subarray Sum 209. Minimum Size Subarray Sum 題目有給目標值,要找尋的子陣列是子陣列總和大於或等於目標值即可。 所以滑動窗口的題目,我們只要找到子陣列的總和開始大於或等於目標的時候,就可以開始縮減窗口,
105. Construct Binary Tree from Preorder and Inorder Traversal 105. Construct Binary Tree from Preorder and Inorder Traversal 題目給出前序遍歷以及中序遍歷的順序,
3. Longest Substring Without Repeating Characters 3. Longest Substring Without Repeating Characters 這一題其實是可以透過暴力解法想辦法算出來的,那就是窮舉出所有的子字串,並且檢查每一個子字串有沒有重複的字元。時間複雜度約為
536. Construct Binary Tree from String 536. Construct Binary Tree from String 做這題之前可以先完成 606. Construct String
424. Longest Repeating Character Replacement 424. Longest Repeating Character Replacement class Solution: def characterReplacement(self,
11. Container With Most Water 11. Container With Most Water 解題的核心想法是有一句俗諺:水桶的最大容量決定於最矮的一邊。 題目給出的正是水桶高度,只是俗諺中的水桶,底部的面積都一樣,