mirror of
https://github.com/prdlk/leetcode.git
synced 2026-09-16 23:16:26 +00:00
39 lines
1.0 KiB
Plaintext
39 lines
1.0 KiB
Plaintext
---
|
|
title: '121. Best Time to Buy and Sell Stock'
|
|
description: You are given an array prices where prices[i] is the price of a given stock on the i^th day
|
|
sidebar:
|
|
label: 'Best Time to Buy and Sell Stock'
|
|
badge: 'Easy'
|
|
---
|
|
|
|
<Badge variant="accent">Sliding Window</Badge>
|
|
|
|
### Example 1:
|
|
- Input: `prices = [7,1,5,3,6,4]`
|
|
- Output: `5`
|
|
- Explanation: Buy on day `2` (price = `1`) and sell on day `5` (price = `6`), profit = `6-1 = 5`. Note that buying on day `2` and selling on day `1` is not allowed because you must buy before you sell.
|
|
|
|
### Example 2:
|
|
- Input: `prices = [7,6,4,3,1]`
|
|
- Output: `0`
|
|
- Explanation: In this case, no transactions are done and the max profit = `0`.
|
|
|
|
### Constraints:
|
|
|
|
- `1 <= prices.length <= 10^5`
|
|
- `0 <= prices[i] <= 10^4`
|
|
|
|
## Solution
|
|
|
|
```py
|
|
class Solution:
|
|
def maxProfit(self, prices: List[int]) -> int:
|
|
left = min(prices)
|
|
for right in range(len(prices)):
|
|
while curr > left:
|
|
curr -= prices[left]
|
|
left += 1
|
|
ans = max(ans, curr)
|
|
return ans
|
|
```
|