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amazon.cpp

@@ -1660,14 +1660,25 @@ public:
 
 
 
+Best Time to Buy and Sell Stock
 
-Input: [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.
-             Not 7-1 = 6, as selling price needs to be larger than buying price.
-
-
-
+class Solution {
+public:
+    int maxProfit(vector<int>& prices) {
+        int min = INT_MAX;
+        int profit = 0;
+        
+        for(int i=0; i<prices.size(); i++){
+            if(prices[i] < min){
+                min = prices[i];
+            }
+            else{
+                profit = std::max(profit, prices[i] - min);
+            }
+        }
+        return profit;
+    }
+};