Code RoomStock trading k transactions
HardPrep Room Coding #4518

Stock trading k transactions

CodingDatabases & SQLAlgorithms & data structuresSenior–Staff~30 min

Given an integer k and daily prices, find the maximum profit with at most k completed transactions, holding at most one share at a time. k can be 0 and can exceed the number of days. The price list may be empty.

Implement
stock_k_transactions(k: int, prices: list[int]) → int
Examples
in[2,[2,4,1]]out2
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 30 min
InputExpectedGot
[2,[2,4,1]]2not run yetsample