#75Medium· asked at 45 companies
Best time to buy and sell stock
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What we know
Example 1
Input: prices = [7,1,5,3,6,4] Output: 5
Buy on day 2 (price 1) and sell on day 5 (price 6).
Example 2
Input: prices = [7,6,4,3,1] Output: 0
Prices only fall, so no transaction is made.
Constraints
- •
1 <= prices.length <= 10^5 - •
0 <= prices[i] <= 10^4