35 lines
1016 B
Java
35 lines
1016 B
Java
# 63. 股票的最大利润
|
||
|
||
[Leetcode](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/description/)
|
||
|
||
## 题目描述
|
||
|
||
可以有一次买入和一次卖出，买入必须在前。求最大收益。
|
||
|
||
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/42661013-750f-420b-b3c1-437e9a11fb65.png" width="220px"> </div><br>
|
||
|
||
## 解题思路
|
||
|
||
使用贪心策略，假设第 i 轮进行卖出操作，买入操作价格应该在 i 之前并且价格最低。
|
||
|
||
```java
|
||
public int maxProfit(int[] prices) {
|
||
if (prices == null || prices.length == 0)
|
||
return 0;
|
||
int soFarMin = prices[0];
|
||
int maxProfit = 0;
|
||
for (int i = 1; i < prices.length; i++) {
|
||
soFarMin = Math.min(soFarMin, prices[i]);
|
||
maxProfit = Math.max(maxProfit, prices[i] - soFarMin);
|
||
}
|
||
return maxProfit;
|
||
}
|
||
```
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div align="center"><img width="320px" src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/githubio/公众号二维码-2.png"></img></div>
|