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Reverse Linked List Given the head of a singly linked list, reverse the list, and return the reversed list. Example 1: Input: head = [1,2,3,4,5] Outpu 阅读全文
posted @ 2023-01-03 21:36
iyiluo
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Excel Sheet Column Title Given an integer columnNumber, return its corresponding column title as it appears in an Excel sheet. For example: A -> 1 B - 阅读全文
posted @ 2023-01-03 21:35
iyiluo
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Binary Tree Postorder Traversal Given the root of a binary tree, return the postorder traversal of its nodes' values. Example 1: Input: root = [1,null 阅读全文
posted @ 2023-01-03 21:35
iyiluo
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Binary Tree Preorder Traversal Given the root of a binary tree, return the preorder traversal of its nodes' values. Example 1: Input: root = [1,null,2 阅读全文
posted @ 2023-01-03 21:34
iyiluo
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Best Time to Buy and Sell Stock You are given an array prices where prices[i] is the price of a given stock on the ith day. You want to maximize your 阅读全文
posted @ 2023-01-03 21:34
iyiluo
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Arranging Coins You have n coins and you want to build a staircase with these coins. The staircase consists of k rows where the ith row has exactly i 阅读全文
posted @ 2023-01-03 21:34
iyiluo
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Repeated Substring Pattern Given a string s, check if it can be constructed by taking a substring of it and appending multiple copies of the substring 阅读全文
posted @ 2023-01-03 21:33
iyiluo
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Construct the Rectangle A web developer needs to know how to design a web page's size. So, given a specific rectangular web page’s area, your job by n 阅读全文
posted @ 2023-01-03 21:33
iyiluo
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Reverse Words in a String III Given a string s, reverse the order of characters in each word within a sentence while still preserving whitespace and i 阅读全文
posted @ 2023-01-03 21:33
iyiluo
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Island Perimeter You are given row x col grid representing a map where grid[i][j] = 1 represents land and grid[i][j] = 0 represents water. Grid cells 阅读全文
posted @ 2023-01-03 21:32
iyiluo
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win10 系统下的 Tim 个人文件夹默认保存在“我的文档”，虽然有个自定义选项，但是重启后会自动还原到“我的文档”。 可以用 windows 提供的文件夹映射来解决这个问题 MKLINK [[/D] | [/H] | [/J]] Link Target 例如，我们想把 Tim 文件夹放到 D 盘 阅读全文
posted @ 2023-01-03 10:12
iyiluo
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