Short Problem Definition:
Given a log of stock prices compute the maximum possible earning.
Link
Complexity:
expected worst-case time complexity is O(N);
expected worst-case space complexity is O(1)
Execution:
Keep the minimal value up to day. The profit on day i is profit[i] – min_profit.
Solution:
def solution(A): max_profit = 0 max_day = 0 min_day = 200000 for day in A: min_day = min(min_day, day) max_profit = max(max_profit, day-min_day) return max_profit
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