LeetCode #746 : Min cost climbing stairs
60 ms, faster than 44.27%
On a staircase, the i-th step has some non-negative cost cost[i] assigned (0 indexed).
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LeetCode #931. Minimum Falling Path Sum
132 ms, faster than 38.27%
Given a square array of integers A, we want the minimum sum of a falling path through A.
LeetCode #8 : String to Integer (atoi)
Solution in python3: 28 ms, faster than 93.82% (plus python profiling)
This problem is quite simple and does not allow for many algorithmic improvements. In fact it would be difficult to come up with a non-optimal (bigger than \(O(n)\)) solution. This makes this problem a good candidate for benchmarking.
LeetCode #10 : Regular Expression Matching
solution in python3: 44 ms, faster than 86.57%, Memory Usage: 12.7 MB, less than 100.00%
Given an input string (s) and a pattern (p), implement regular expression matching with support for . and *.
LeetCode #23 : Merge k Sorted Lists
$O(n * log(k))$ solution in python3: faster than 83.12%
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity.