2nd/10_Wiki/Dev/Topic_CPP/CPP_Data_Structures.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
cpp-data-structures	C++ Data Structures and STL	Programming_Language	draft	conceptual		STL Standard Template Library C++ 자료구조		B	0.87	2026-07-04	2026-07-04			cpp programming-language w3schools stl data-structures	https://www.w3schools.com/cpp/cpp_data_structures.asp

CPP Data Structures

🎯 한 줄 통찰 (One-line insight)

C has exactly ONE built-in data structure — the array — and everything else (linked lists, stacks, queues, hash-like maps) must be hand-built from structs and raw pointers; C++'s STL instead ships vector/list/stack/queue/deque/set/map as ready-made template classes, meaning the entire "how do I build a linked list" problem that consumed a whole chapter of Topic_C's Pointers section is simply gone from the C++ mental model — replaced by "which header do I include." [S1]

🧠 핵심 개념 (Core concepts)

• STL (Standard Template Library) — a library of data structures + algorithms bundled with C++, used to store and manipulate data efficiently. [S1]
• Containers — data structures that store data (vector, list, stack, queue, deque, set, map). [S1]
• Iterators — objects used to access elements of a container without knowing its internal layout. [S1]
• Algorithms — functions like sort() and find() that operate on containers through iterators. [S1]
• One header per container — each container requires its own #include (<vector>, <list>, <set>, <map>, <stack>, <queue>), unlike arrays which need no header. [S1]
• Choosing a container is a design decision — the right data structure + algorithm makes a program run faster, especially at scale; the table of 7 containers (Vector/List/Stack/Queue/Deque/Set/Map) each optimize a different access pattern. [S1]

📖 세부 내용 (Details)

• Container comparison table: Vector (array-like, dynamic size, index access), List (sequential, add/remove both ends, no index access), Stack (LIFO, top only), Queue (FIFO, front/back only), Deque (double-ended, index access), Set (unique elements, no index), Map (key/value pairs, access by key). [S1]
• Minimal vector usage: vector<string> cars = {"Volvo", "BMW", "Ford", "Mazda"}; for (string car : cars) { cout << car << "\n"; }. [S1]
• Containers + iterators + algorithms form a triangle: a container without an algorithm to search/manipulate it is not very useful, and an algorithm needs a container to operate on. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

• C에는 없는 개념 층위가 통째로 추가됨: Topic_C에는 "자료구조 챕터"가 존재하지 않았고(배열이 유일한 내장 자료구조), 연결 리스트/스택/큐는 포인터+구조체로 직접 구현하는 예제들이 Pointers 섹션에 흩어져 있었다. C++는 이를 컨테이너+반복자+알고리즘이라는 3층 구조로 라이브러리화했다는 점이 이번 챕터에서 명확히 드러남. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 문자열 vector를 만들고 for-each로 순회하는 패턴이 원문에서 STL 소개 예제로 제시됨. [S1]

💻 코드 패턴 (Code patterns)

Required headers per container, and a first vector example (C++):

#include <vector>
#include <list>
#include <set>
#include <map>
#include <stack>
#include <queue>

vector<string> cars = {"Volvo", "BMW", "Ford", "Mazda"};
for (string car : cars) {
  cout << car << "\n";
}

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.87
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: C++ Tutorial
• 관련 개념: CPP Vectors, CPP List, CPP Stacks, CPP Queues, CPP Arrays
• 참조 맥락: 데이터 구조(STL) 섹션의 도입 챕터 — Vectors로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — C++ Data Structures and STL — https://www.w3schools.com/cpp/cpp_data_structures.asp

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "C++ Data Structures and STL" page (Astra wiki-curation, P-Reinforce v3.1 format).