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| 1 | +# μ°κ΄ λ§ν¬ |
| 2 | +- [λ¬Έμ νμ΄ μ€μΌμ€](https://github.com/orgs/DaleStudy/projects/6/views/5) |
| 3 | +- [λ΅μ μ½λ μ μΆλ²](https://github.com/DaleStudy/leetcode-study/wiki/%EB%8B%B5%EC%95%88-%EC%A0%9C%EC%B6%9C-%EA%B0%80%EC%9D%B4%EB%93%9C) |
| 4 | + |
| 5 | +# Problem |
| 6 | +- λ¬Έμ λ§ν¬ : https://leetcode.com/problems/reverse-linked-list/description/ |
| 7 | +- λ¬Έμ μ΄λ¦ : reverse-linked-list |
| 8 | +- λ¬Έμ λ²νΈ : 206 |
| 9 | +- λμ΄λ : easy |
| 10 | +- μΉ΄ν
κ³ λ¦¬ : |
| 11 | + |
| 12 | +# μμ΄λμ΄ |
| 13 | +- μ΄λ€ λ°©λ²μΌλ‘ μ κ·Όνλμ§ μμ |
| 14 | +- ν¬μ€ vs μ΅μ ν μμ΄λμ΄ μ°¨μ΄ λ± |
| 15 | +- μ‘λμ λν κ³ λ € |
| 16 | + |
| 17 | +# β
μ½λ (Solution) |
| 18 | + |
| 19 | +```cpp |
| 20 | +/** |
| 21 | + * Definition for singly-linked list. |
| 22 | + * struct ListNode { |
| 23 | + * int val; |
| 24 | + * ListNode *next; |
| 25 | + * ListNode() : val(0), next(nullptr) {} |
| 26 | + * ListNode(int x) : val(x), next(nullptr) {} |
| 27 | + * ListNode(int x, ListNode *next) : val(x), next(next) {} |
| 28 | + * }; |
| 29 | + */ |
| 30 | +class Solution { |
| 31 | +public: |
| 32 | + ListNode* reverseListSubFunc(ListNode* before, ListNode* after){ |
| 33 | + if(!after){ |
| 34 | + return before; |
| 35 | + } |
| 36 | + |
| 37 | + auto next = after->next; |
| 38 | + after->next = before; |
| 39 | + return reverseListSubFunc(after, next); |
| 40 | + } |
| 41 | + |
| 42 | + ListNode* reverseList(ListNode* head) { |
| 43 | + return reverseListSubFunc(nullptr, head); |
| 44 | + } |
| 45 | +}; |
| 46 | +``` |
| 47 | + |
| 48 | + |
| 49 | +# π μ½λ μ€λͺ
|
| 50 | + |
| 51 | + |
| 52 | +# μ΅μ ν ν¬μΈνΈ (Optimality Discussion) |
| 53 | +β’ μ΅μ νν μ΄μ μ μ리 |
| 54 | +β’ λ μ€μΌ μ μλ μ¬μ§λ μλκ°? |
| 55 | +β’ κΈ°μ‘΄ λ°©λ² λλΉ μΌλ§λ ν¨μ¨μ μ΄μλμ§ |
| 56 | + |
| 57 | +# π§ͺ ν
μ€νΈ & μ£μ§ μΌμ΄μ€ |
| 58 | + |
| 59 | +# π κ΄λ ¨ μ§μ λ³΅μ΅ |
| 60 | + |
| 61 | +# π νκ³ |
| 62 | + |
| 63 | + |
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