摘要： 原题链接在这里：https://leetcode.com/problems/verify-preorder-sequence-in-binary-search-tree/ 题目： Given an array of numbers, verify whether it is the correct 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/paint-house-ii/ 题目： There are a row of n houses, each house can be painted with one of the k colors. The cost of 阅读全文

摘要： 原题链接在这里：https://leetcode.com/problems/paint-house/ 题目： There are a row of n houses, each house can be painted with one of the three colors: red, blue 阅读全文