feat: solve new question

Author: arwildo

best-time-to-buy-and-sell-stock/main.js

@@ -0,0 +1,21 @@
+/**
+ * @param {number[]} prices
+ * @return {number}
+ */
+var maxProfit = function(prices) {
+    let left = 0;
+    let right = 1;
+    let maxProfit = 0;
+
+    while (right < (prices.length)) {
+        if (prices[left] < prices[right]) {
+            let profit = prices[right] - prices[left];
+            maxProfit = Math.max(profit, maxProfit);
+        } else {
+            left = right;
+        }
+    right += 1;
+    }
+
+    return maxProfit;
+};