2026-06-01 16:12:21 +08:00
|
|
|
#+PROPERTY: STUDY_DECK_02
|
2026-06-01 17:12:10 +08:00
|
|
|
* TODO 0054. Spiral Matrix :medium:
|
2026-06-01 02:33:30 +08:00
|
|
|
:PROPERTIES:
|
2026-06-01 17:22:07 +08:00
|
|
|
:NEETCODE: [[file:../../roadmap.org::*0054. Spiral Matrix][0054. Spiral Matrix]]
|
2026-06-01 02:33:30 +08:00
|
|
|
:END:
|
|
|
|
|
|
2026-06-01 17:22:07 +08:00
|
|
|
Given an ~m x n~ ~matrix~, return /all elements of the/ ~matrix~ /in spiral order/.
|
|
|
|
|
|
|
|
|
|
*Example 1:*
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#+begin_src
|
|
|
|
|
Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]
|
|
|
|
|
Output: [1,2,3,6,9,8,7,4,5]
|
|
|
|
|
#+end_src
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
*Example 2:*
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#+begin_src
|
|
|
|
|
Input: matrix = [[1,2,3,4],[5,6,7,8],[9,10,11,12]]
|
|
|
|
|
Output: [1,2,3,4,8,12,11,10,9,5,6,7]
|
|
|
|
|
#+end_src
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
*Constraints:*
|
|
|
|
|
|
|
|
|
|
- ~m == matrix.length~
|
|
|
|
|
|
|
|
|
|
- ~n == matrix[i].length~
|
|
|
|
|
|
|
|
|
|
- ~1 <= m, n <= 10~
|
|
|
|
|
|
|
|
|
|
- ~-100 <= matrix[i][j] <= 100~
|
|
|
|
|
|
2026-06-01 02:39:53 +08:00
|
|
|
** TODO Approach
|
|
|
|
|
Write your approach here.
|
|
|
|
|
|
|
|
|
|
** TODO Python
|
|
|
|
|
#+begin_src python
|
2026-06-01 17:22:07 +08:00
|
|
|
class Solution:
|
|
|
|
|
def spiralOrder(self, matrix: List[List[int]]) -> List[int]:
|
2026-06-01 02:39:53 +08:00
|
|
|
#+end_src
|
|
|
|
|
|
|
|
|
|
** TODO C++
|
2026-06-01 02:33:30 +08:00
|
|
|
#+begin_src cpp
|
2026-06-01 17:22:07 +08:00
|
|
|
class Solution {
|
|
|
|
|
public:
|
|
|
|
|
vector<int> spiralOrder(vector<vector<int>>& matrix) {
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
};
|
2026-06-01 02:33:30 +08:00
|
|
|
#+end_src
|