原创 [US Giants] 三. Binary Search
Sqrt(x)：點擊打開鏈接 Implement int sqrt(int x). Compute and return the square root of x. Example sqrt(3) = 1 sqrt(4) =
2020-02-21 01:19:54
原创 [US Giants] 七. Binary Tree
Balanced Binary Tree Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced bin
2020-02-21 01:19:54
原创 [Microsoft] Identical Binary Tree
Check if two binary trees are identical. Identical means the two binary trees have the same structure and every ident
2020-02-21 01:19:54
原创 [LeetCode] 191. Number of 1 Bits
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming w
2020-02-21 01:19:54
原创 Duplicate問題
219. Contains Duplicate II Given an array of integers and an integer k, find out whether there are two distinct indices
2019-07-05 16:09:22
原创 [ShuaTi]
686. Repeated String Match class Solution { public int repeatedStringMatch(String A, String B) { if(A == n
2019-01-26 02:22:21
原创 [Postgre SQL] postgre sql
參考此tutorial：http://gitbook.net/postgresql/2013080439.html1. 直接打開SQL Shell (psql)2. 點回車直到如下1. create database database-
2018-08-29 03:24:01
原创 [Mongodb]mongodb import json
前提：要導入的json文件數據放在mongo/bin目錄下，路徑一定要放對 cd mongo/bin ./mongoimport -d db名稱 -c collection名稱 --jsonArray data.json 結果：d
2018-08-29 03:24:01
5
原创 [Spring Boot] Spring Boot Actuator
前提：建好Spring Starting Project 1. src/main/resources目錄裏的application.properties里加 server.port: 9000 management.port: 9001
2018-08-29 03:24:01
3
原创 [spring Boot] how to package and run Spring Boot application as a JAR file
前提：進入到當前project的目錄下 1. mvn clean install 2. java -jar target/文件名-0.0.1-SNAPSHOT.jar
2018-08-29 03:24:00
原创 [Git] Git初應用
條件：在gitHub上已經創建了新的repository：Web-Programming，並且創建的同時 initialize this repository with a README Add .gitignore: Node Add
2018-08-29 03:24:00
3
原创 [MongoDB] Mongodb的初應用
前提：下載好mongodb，然後把下載下來的文件夾改爲mongo，並將文件夾移到自己用的地方，在同一個路徑下創建mongo-data文件夾 要做：初次連接並小測試下mongodb 步驟： cd mongo/bin ./mongod --d
2018-08-29 03:24:00
3
原创 [US Giants] 十. Data Structure
Longest Consecutive Sequence Given an unsorted array of integers, find the length of the longest consecutive elements
2018-08-29 03:24:00
2