2023

• RPC Message procedure
• PubSub architecture
• RESTful architecture
• Connection-Oriented Message protocol (Websocket/Http)

2022

• Concept of Disk RADI
• Concept of Batch, Cron
• Authentification - Session vs. Token vs. Cookies? Understanding concept of Stateless and Stateful

2021

• IP address and Gateway, DNS, subnet
• Serverless
• OS - process and thread
• Linux - How to write and execute Linux Shell scripts
• MSA - Micro Service Architecture
• C++ preprocessor
• C++ assertion
• Algorithm - Dijkstra
• C++ - stringstream
• Algorithm - Handling MST
• Algorithm - UnionFind
• Algorithm - memoization
• C++ - class Inheritance
• C++ - reserve(), resize() - what why
• C++ - std::sort std::unique (Eliminate duplication in vector)
• C++ - resize()
• When to use boost::Optional?

2020

• C++ - compare two strings
• Git - refs/for and refs using in Git
• Git - How to Squash one commit by rebase command
• C++ STL - vector - modifying data by operator[], erase(), insert()
• Algorithm - Greedy algorithm (Fractional Knapsack Problem and C++)
• Algorithm - Greedy algorithm (Concept, Coin Exchange Problem and C++)
• C++ STL - sort() (about vector, pair and sort())
• Algorithm - DFS (Concept, Time Complexity and C++)
• Algorithm - BFS (Concept, BFS using queue and Time Complexity)
• Algorithm - Sequential Search and Binary Search (Concept and C++)
• Algorithm - quick sort (Concept and C++ implementation)
• Algorithm - merge sort (Concept, Analysis and C++ code)
• Algorithm - Dynamic Programming & Divide and Conqure (Concept and C++ examples)
• Algorithm - Recursive call (Concept and C++ examples)
• Algorithm - Insertion Sort (Concept,Pseudocode and C++ code)
• Algorithm - Selection Sort (Concept,Pseudocode and C++ code)
• Algorithm - Bubble Sort (Concept,Pseudocode and C++ code)
• Data Structure - Heap (Concept and C++ code)
• Data Structure - Tree (Concept and C++ code)
• Data Structure - Hash Table (Concept and C++ code)
• Git Blog - create your Blog with GitHub Pages (steps by steps)
• Data Structure - Linked List (Concept and C++ code)
• Data Structure - Stack (Concept and STL, C++ code)
• Data Structure - Queue (Concept and C++ STL, Priority queue)
• Data Structure - Array (Concept and C++ code)
• Data Structure - What is Data Structure and Algorithm?

2019

• C++ - 데이터 타입 범위
• 백준 2869 달팽이는 올라가고 싶다
• 백준 2292 벌집
• 백준 5622 다이얼
• 백준 2941 크로아티아 알파벳
• 백준 1316 그룹 단어 체커
• C++ - find_if() 함수와 end() 함수
• C++ - std::string::npos (npos의 의미)
• C++ - std::string::find (C++11)
• 백준 2675 문자열 반복
• 백준 10809 알파벳찾기
• C++ - string 문자열
• 백준 11720 숫자의 합
• 백준 2447 별찍기-10
• 백준 11729 하노이 탑 이동순서
• Data Structure - Recursion(재귀, 순환)에 대한 이해
• C++ - sizeof() 와 size() 함수
• C++ - 배열 초기화, 0으로 배열 초기화하기
• 백준 4673 셀프넘버
• 백준 10872 팩토리얼
• 백준 8958 OX퀴즈
• C++ - Range based for loop 범위 기반 for 루프 (since C++11)
• 백준 3052 나머지
• 백준 10951 A+B(4)
• 백준 2884 알람시계