题目要求 We are given an array A of N lowercase letter strings, all of the same length. Now, we may choose any set of deletion indices, and for each string, we delete all the characters in those indices. For example, if we have an array A = ["abcdef"…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/delete-columns-to-make-sorted/description/ 题目描述 We are given an array A of N lowercase letter strings, all of the same length. Now, we may…
class Solution: def minDeletionSize(self, A: List[str]) -> int: ans = 0 for j in range(len(A[0])): t = [] for a in A: t.append(a[j]) if sorted(t) != t: ans += 1 return ans…
题目如下: We are given an array A of N lowercase letter strings, all of the same length. Now, we may choose any set of deletion indices, and for each string, we delete all the characters in those indices. For example, if we have a string "abcdef" an…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 迭代 日期 题目地址:https://leetcode.com/problems/delete-node-in-a-bst/description/ 题目描述 Given a root node reference of a BST and a key, delete the node with the given key in the BST. Re…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 解题方法 递归 迭代 日期 题目地址:https://leetcode.com/problems/binary-tree-inorder-traversal/ 题目描述 Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 递归+队列 栈 日期 题目地址:https://leetcode.com/problems/flatten-nested-list-iterator/description/ 题目描述 Given a nested list of integers, implement an iterator to flatten it. Each element i…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 递归 迭代 日期 题目地址:https://leetcode.com/problems/n-ary-tree-preorder-traversal/description/ 题目描述 Given an n-ary tree, return the preorder traversal of its nodes' values. For example,…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 迭代 递归 日期 题目地址:https://leetcode.com/problems/reverse-linked-list-ii/description/ 题目描述 Reverse a linked list from position m to n. Do it in one-pass. Note: 1 ≤ m ≤ n ≤ length of…