Medium
Quiz
#59 Spiral Matrix II
APPROACH
Construct and return an n x n matrix whose entries are integers 1 through n2 placed in clockwise spiral order.
Example 1:
Input: n = 3
Output: [[1,2,3],[8,9,4],[7,6,5]]
Example 2:
Input: n = 1
Output: [[1]]
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What is the optimal approach for this problem?