solve problem

Author: delight010

best-time-to-buy-and-sell-stock/delight010.swift

@@ -0,0 +1,12 @@
+class Solution {
+    func maxProfit(_ prices: [Int]) -> Int {
+        var lowPrice: Int = prices[0]
+        var maxProfit: Int = 0
+        for i in 0..<prices.endIndex {
+            lowPrice = min(lowPrice, prices[i])
+            maxProfit = max(maxProfit, prices[i] - lowPrice)
+        }
+        return maxProfit
+    }
+}
+