原创 Git學習筆記四(創建和合並分支)

Git學習筆記四 創建與合併分支 在Git中,主分支是master分支,一開始的時候,master分支是一條線,Git用master指向最新的提交,再用HEAD指向master,就能確定當前分支,以及當前分支的提交點,每次提交,

原创 LeetCode 326. Power of Three

326. Power of Three Description Given an integer, write a function to determine if it is a power of three. Follow

原创 Python Requests文檔閱讀筆記

Python Requests文檔閱讀筆記 學習庫還是得從文檔下手,Python Requests Library 以下內容均摘錄總結於該文檔,所以具體部分可以參考文檔。 快速上手 使用前別忘記導入Requests模塊 i

原创 LeetCode 387. First Unique Character in a String

387. First Unique Character in a String Description Given a string, find the first non-repeating character in it a

原创 LeetCode 167. Two Sum II - Input array is sorted

167. Two Sum II - Input array is sorted Description Given an array of integers that is already sorted in ascending

原创 LeetCode 242. Valid Anagram

242. Valid Anagram Description Given two strings s and t, write a function to determine if t is an anagram of s.

原创 LeetCode 563. Binary Tree Tilt

563. Binary Tree Tilt Description Given a binary tree, return the tilt of the whole tree. The tilt of a tree no

原创 LeetCode 206. Reverse Linked List

206. Reverse Linked List Description Reverse a singly linked list. Solution 題意即將一個鏈表倒轉。 有兩種方式,迭代和遞歸,代碼如下。 // 迭代

原创 LeetCode 404. Sum of Left Leaves

404. Sum of Left Leaves Description Find the sum of all left leaves in a given binary tree. Example: 3 /

原创 LeetCode 415. Add Strings

415. Add Strings Description Given two non-negative integers num1 and num2 represented as string, return the sum o

原创 LeetCode 171. Excel Sheet Column Number

171. Excel Sheet Column Number Description Related to question Excel Sheet Column Title Given a column title as

原创 LeetCode 530. Minimum Absolute Difference in BST

530. Minimum Absolute Difference in BST Description Given a binary search tree with non-negative values, find the

原创 LeetCode 268. Missing Number

268. Missing Number Description Given an array containing n distinct numbers taken from 0, 1, 2, …, n, find the on

原创 Git 學習筆記(簡介、安裝、添加提交文件、查看狀態及更改信息)

Git 學習筆記一 Git簡介 Git是Linus開發的強大的開源版本控制軟件,能夠跟蹤文件修改軌跡以方便查看等。(對於文件內部改動,只能跟蹤文本文件,二進制文件只能夠跟蹤大小改變等外部性質)。 版本控制系統分爲集中式和分佈式,

原创 2019/2/20 今日頭條面試體驗

第一次面試,留作經驗。 投遞崗位:數據挖掘實習生(可轉正)-國際化 過程:投簡歷、電話預約面試時間、一面、二面、掛 背景:帝都211 大三 CS 一、細節 1. 簡歷 https://job.bytedance.com/inter