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Best Time to Buy and Sell Stock
Dynamic Programming
Say you have an array for which the ith element is the price of a given stock on day i.
If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), design an algorithm to find the maximum profit.
C++代码实现：
#include<iostream>#include<vector>using namespace std;class Solution{public: int maxProfit(vector<int> &prices) { if(prices.empty()) return 0; int buy=prices[0]; int maxSum=0; int sum=0; int i; for(i=1;i<(int)prices.size();i++) { sum=prices[i]-buy; if(sum>maxSum) maxSum=sum; if(prices[i]<buy) buy=prices[i]; } return maxSum; }};int main(){ Solution s; vector<int> vec={1,4,6,8,3,5,9,3,6}; cout<<s.maxProfit(vec)<<endl;}
Best Time to Buy and Sell Stock
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