#803Medium#5 in X (Twitter)'s list· asked at 5 companies
Kth Smallest Element in a Sorted Matrix
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What we know
Example 1
Input: matrix = [[1,5,9],[10,11,13],[12,13,15]], k = 8 Output: 13
Sorted: 1,5,9,10,11,12,13,13,15; the 8th is 13.
Example 2
Input: matrix = [[-5]], k = 1 Output: -5
Constraints
- •
n == matrix.length == matrix[i].length - •
1 <= n <= 300 - •
-10^9 <= matrix[i][j] <= 10^9 - •
1 <= k <= n^2