122-LeetcodeProblem

C++/BuyandSellStockII/buyandsell

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+// You are given an integer array prices where prices[i] is the price of a given stock on the ith day.
+
+// On each day, you may decide to buy and/or sell the stock. You can only hold at most one share of the stock at any time. However, you can buy it then immediately sell it on the same day.
+
+// Find and return the maximum profit you can achieve.
+
+
+
+// Example 1:
+
+// Input: prices = [7,1,5,3,6,4]
+// Output: 7
+// Explanation: Buy on day 2 (price = 1) and sell on day 3 (price = 5), profit = 5-1 = 4.
+// Then buy on day 4 (price = 3) and sell on day 5 (price = 6), profit = 6-3 = 3.
+// Total profit is 4 + 3 = 7.
+// Example 2:
+
+// Input: prices = [1,2,3,4,5]
+// Output: 4
+// Explanation: Buy on day 1 (price = 1) and sell on day 5 (price = 5), profit = 5-1 = 4.
+// Total profit is 4.
+// Example 3:
+
+// Input: prices = [7,6,4,3,1]
+// Output: 0
+// Explanation: There is no way to make a positive profit, so we never buy the stock to achieve the maximum profit of 0.
+
+
+// Constraints:
+
+// 1 <= prices.length <= 3 * 104
+// 0 <= prices[i] <= 104
+
+
+# include<bits/stdc++.h>
+using namespace std;
+class Solution {
+public:
+    int maxProfit(vector<int>& prices) {
+
+        int max_profit=0;
+
+        for(int i=1;i<prices.size();i++ ){
+            if(prices[i]>prices[i-1]){
+                max_profit+=prices[i]-prices[i-1];
+            }
+
+
+        }
+        return max_profit;
+
+    }
+};