solve best-time-to-buy-and-sell-stock

Author: hyejj19

best-time-to-buy-and-sell-stock/hyejj19.ts

@@ -0,0 +1,26 @@
+function maxProfit(prices: number[]): number {
+  let minPrice = Number.MAX_SAFE_INTEGER;
+  let maxProfit = 0;
+
+  for (let p of prices) {
+    if (minPrice >= p) {
+      minPrice = p;
+      continue;
+    } else {
+      let profit = p - minPrice;
+      if (profit > maxProfit) maxProfit = profit;
+    }
+  }
+  return maxProfit;
+}
+
+function maxProfit(prices: number[]): number {
+  let minPrice = Infinity;
+  let maxProfit = 0;
+
+  for (let p of prices) {
+    minPrice = Math.min(minPrice, p);
+    maxProfit = Math.max(maxProfit, p - minPrice);
+  }
+  return maxProfit;
+}