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[note] Data Structure
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Diff for: โ€Žnotes/DataStructure/Array+LinkedList.md

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# ๋ฐฐ์—ด(Array)๊ณผ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ(Linked List)
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๋ฐฐ์—ด๊ณผ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ๋Š” ์„œ๋กœ ๋ฐ˜๋Œ€๋˜๋Š” ํŠน์ง•์„ ๊ฐ€์กŒ๋‹ค.
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## Array (๋ฐฐ์—ด)
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๋™์ผํ•œ ์ž๋ฃŒํ˜•์˜ ๋ฐ์ดํ„ฐ๋ฅผ ์ผ๋ ฌ๋กœ ๋‚˜์—ดํ•œ ์ž๋ฃŒ๊ตฌ์กฐ์ด๋‹ค.
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- ์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ
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- ๋ฐ์ดํ„ฐ ์ ‘๊ทผ์ด ์šฉ์ดํ•˜๋‹ค. (์ธ๋ฑ์Šค๋กœ ์ ‘๊ทผ)
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- ๋ฐ์ดํ„ฐ ์‚ฝ์ž…/์‚ญ์ œ๊ฐ€ ์–ด๋ ต๋‹ค.
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- ๊ตฌ์กฐ๊ฐ€ ๊ฐ„๋‹จํ•˜์—ฌ ํ”„๋กœ๊ทธ๋žจ ์ž‘์„ฑ์ด ์‰ฝ๋‹ค.
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## Linked List (์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ)
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๊ฐ ๋…ธ๋“œ๊ฐ€ **๋ฐ์ดํ„ฐ**์™€ **ํฌ์ธํ„ฐ**๋ฅผ ๊ฐ€์ง€๊ณ  ์ผ๋ ฌ๋กœ ์—ฐ๊ฒฐ๋˜์–ด ์žˆ๋Š” ๋ฐฉ์‹์ด๋‹ค.
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- ์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ
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- ๋ฐ์ดํ„ฐ์˜ ์ ‘๊ทผ์ด ๋А๋ฆฌ๋‹ค. (๋งํฌ๋ฅผ ํƒ€๊ณ  ๊ฐ€์„œ ์ฐพ์•„์•ผ ํ•œ๋‹ค.)
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- ๋ฐ์ดํ„ฐ์˜ ์‚ฝ์ž…/์‚ญ์ œ ์—ฐ์‚ฐ์ด ์šฉ์ดํ•˜๋‹ค.
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- ํฌ์ธํ„ฐ๋ฅผ ์œ„ํ•œ ์ถ”๊ฐ€ ๊ณต๊ฐ„์ด ํ•„์š”ํ•˜๋‹ค.

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> ๋ฐฐ์—ด (Array), ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ (Linked List), ์Šคํƒ (Stack), ํ (Queue)
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- ๋ฐฐ์—ด(Array)๊ณผ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ(Linked List)
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- [์Šคํƒ(Stack)๊ณผ ํ(Queue)](./Stack+Queue.md)
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- [๋ฐฐ์—ด(Array)๊ณผ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ(Linked List)](./Array+LinkedList.md)
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- [์Šคํƒ(Stack)๊ณผ ํ(Queue) ๊ทธ๋ฆฌ๊ณ  ๋ฑ(Deque)](./Stack+Queue.md)
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### ๋น„์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ : ๋ฐ์ดํ„ฐ๊ฐ€ ํŠน์ •ํ•œ ํ˜•ํƒœ๋ฅผ ๋„๊ณ  ์žˆ๋‹ค
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> ํŠธ๋ฆฌ (Tree), ๊ทธ๋ž˜ํ”„ (Graph)
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- ํŠธ๋ฆฌ(Tree)
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- ํŠธ๋ฆฌ(Tree)์˜ ์‘์šฉ - ํŠธ๋ผ์ด(Trie)
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- [ํŠธ๋ฆฌ(Tree)์˜ ์‘์šฉ - ํŠธ๋ผ์ด(Trie)](./Trie.md)
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- ์ด์ง„ ํŠธ๋ฆฌ(Binary Tree)
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- ์ด์ง„ ํŠธ๋ฆฌ(Binary Tree)์˜ ์‘์šฉ - ํž™(Heap)๊ณผ ์šฐ์„ ์ˆœ์œ„ ํ(Priority Queue)
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- ์ด์ง„ ํŠธ๋ฆฌ(Binary Tree)์˜ ์‘์šฉ - ์ธ๋ฑ์Šค ํŠธ๋ฆฌ(Indexed Tree)

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# ์Šคํƒ(Stack)๊ณผ ํ(Queue) ๊ทธ๋ฆฌ๊ณ  ๋ฑ(Deque)
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์Šคํƒ๊ณผ ํ๋Š” LIFO, FIFO ๊ตฌ์กฐ๋กœ ์•Œ๋ ค์ง„ ์ค‘์š”ํ•˜๊ณ  ๋งค๋ ฅ์ ์ธ ์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ์ด๋‹ค.
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์Šคํƒ์œผ๋กœ ํ๋ฅผ ๊ตฌํ˜„ํ•  ์ˆ˜๋„, ํ๋กœ ์Šคํƒ์„ ๊ตฌํ˜„ํ•  ์ˆ˜๋„ ์žˆ๋‹ค.
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๋˜ํ•œ ์Šคํƒ๊ณผ ํ์˜ LIFO, FIFO ๊ธฐ๋Šฅ์„ ๋ชจ๋‘ ํ™œ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ๋ฑ์ด๋ผ๋Š” ์ž๋ฃŒ๊ตฌ์กฐ๋„ ์žˆ๋‹ค.
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## Stack (์Šคํƒ) - LIFO
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- ์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ
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- ์‚ฝ์ž…, ์‚ญ์ œ ์—ฐ์‚ฐ์ด ํ•œ ๋ฐฉํ–ฅ์—์„œ ์ด๋ฃจ์–ด์ง„๋‹ค.
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- **LIFO(Last In First Out)** : ๋‚˜์ค‘์— ๋“ค์–ด๊ฐ„ ์›์†Œ๊ฐ€ ๋จผ์ € ๋‚˜์˜ค๋Š” ๊ตฌ์กฐ์ด๋‹ค.
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### Stack ์šฉ์–ด
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- `Top` : ์Šคํƒ์— ๋ฐ์ดํ„ฐ๊ฐ€ ์‚ฝ์ž…๋  ์œ„์น˜
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### Stack ํ™œ์šฉ
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- ์‹œ์Šคํ…œ ์Šคํƒ(System Stack) / ์‹คํ–‰์‹œ๊ฐ„ ์Šคํƒ(Runtime stack) : ํ”„๋กœ๊ทธ๋žจ์˜ ํ•จ์ˆ˜ ํ˜ธ์ถœ๊ณผ ๋ณต๊ท€์— ๋”ฐ๋ฅธ ์‹คํ–‰ ์ˆœ์„œ ๊ด€๋ฆฌ
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- ์ธํ„ฐ๋ŸฝํŠธ ๋ฃจํ‹ด ์ฒ˜๋ฆฌ
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- ์ˆ˜์‹์˜ ํ›„์œ„ ํ‘œ๊ธฐ๋ฒ•(Postfix Notation)
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- ์ˆ˜์‹์˜ ๊ด„ํ˜ธ์‹ ๊ฒ€์‚ฌ
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- ์›น ๋ธŒ๋ผ์šฐ์ € ๋ฐฉ๋ฌธ ๊ธฐ๋ก (๋’ค๋กœ๊ฐ€๊ธฐ)
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- ์‹คํ–‰ ์ทจ์†Œ (undo)
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## Queue (ํ) - FIFO
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- ์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ
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- ํ•œ ๋ฐฉํ–ฅ์—์„œ๋Š” ์‚ฝ์ž… ์—ฐ์‚ฐ์ด, ๋ฐ˜๋Œ€ ๋ฐฉํ–ฅ์—์„œ๋Š” ์‚ญ์ œ ์—ฐ์‚ฐ์ด ์ด๋ฃจ์–ด์ง„๋‹ค.
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- **FIFO(First In First Out)** : ๋จผ์ € ๋“ค์–ด๊ฐ„ ์›์†Œ๊ฐ€ ๋จผ์ € ๋‚˜์˜ค๋Š” ๊ตฌ์กฐ์ด๋‹ค.
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### Queue ์šฉ์–ด
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- `Front` / `Head` : ํ์—์„œ ๋ฐ์ดํ„ฐ๊ฐ€ ์‚ญ์ œ๋  ์œ„์น˜
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- `Rear` / `Tail` : ํ์—์„œ ๋งˆ์ง€๋ง‰ ๋ฐ์ดํ„ฐ๊ฐ€ ์‚ฝ์ž…๋œ ์œ„์น˜
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### Queue ํ™œ์šฉ
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- ํ”„๋กœ์„ธ์Šค ๋ ˆ๋”” ํ
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- ์Šค์ผ€์ฅด๋ง
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- ๋„คํŠธ์›Œํฌ ํŒจํ‚ท ์ „์†ก์‹œ ํ•„์š”ํ•œ ๋ฒ„ํผ ๋Œ€๊ธฐ ํ
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- ์บ์‹œ(Cache) ๊ตฌํ˜„
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- javascript์˜ Event Loop ๊ด€๋ฆฌ (๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ)
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- ๋„ˆ๋น„ ์šฐ์„  ํƒ์ƒ‰(BFS, Breadth-First Search)
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- ํ”„๋ฆฐํ„ฐ์˜ ์ถœ๋ ฅ ์ฒ˜๋ฆฌ
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## Deque (๋ฑ)
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- ์„ ํ˜• ์ž๋ฃŒ๊ตฌ์กฐ
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- Double-ended Queue
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- ์–‘๋ฐฉํ–ฅ์—์„œ ์‚ฝ์ž…, ์‚ญ์ œ ์—ฐ์‚ฐ์ด ๋ชจ๋‘ ์ด๋ฃจ์–ด์ง€๋Š” ํ๋ฅผ ๋งํ•œ๋‹ค.
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- Stack(LIFO), Queue(FIFO)์ฒ˜๋Ÿผ ํ™œ์šฉ์ด ๊ฐ€๋Šฅํ•˜๊ธฐ ๋•Œ๋ฌธ์— ๋Œ€์‹ ํ•ด์„œ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค.

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## ๐Ÿ“– Basic
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1. [์•Œ๊ณ ๋ฆฌ์ฆ˜ ๊ธฐ์ดˆ](./Basic/Basic.md)
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1. [์•Œ๊ณ ๋ฆฌ์ฆ˜ ๊ธฐ์ดˆ](./Basic)
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## ๐Ÿ“– Data Structure
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1. [์ž๋ฃŒ๊ตฌ์กฐ(Data Structure)](./DataStructure/DataStructure.md)
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2. [๋ฐฐ์—ด(Array)๊ณผ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ(Linked List)]()
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3. [์Šคํƒ(Stack)๊ณผ ํ(Queue)](./DataStructure/Stack+Queue.md)
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4. [๋ฑ]()
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5. [ํŠธ๋ผ์ด(Trie)](./DataStructure/Trie.md)
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1. [์ž๋ฃŒ๊ตฌ์กฐ(Data Structure)](./DataStructure)
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2. [๋ฐฐ์—ด(Array)๊ณผ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ(Linked List)](./DataStructure/Array+LinkedList.md)
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3. [์Šคํƒ(Stack)๊ณผ ํ(Queue) ๊ทธ๋ฆฌ๊ณ  ๋ฑ(Deque)](./DataStructure/Stack+Queue.md)
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4. [ํŠธ๋ผ์ด(Trie)](./DataStructure/Trie.md)
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## ๐Ÿ“– Graph
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