Suppose you had $K$ dollars and knew the price of gold over the next $n$ days. You want to invest all the $K$ dollars in buying gold once, and then sell all the gold at a later day (both among those $n$ days).
You want to maximize your profit.
Assume you get the prices as an array of length $n$.
Can you find an $O(n)$ time algorithm for this?
[Solution]
You want to maximize your profit.
Assume you get the prices as an array of length $n$.
Can you find an $O(n)$ time algorithm for this?
[Solution]
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