From af47da3d450eaefa2684199dff66ce44b2c9eb34 Mon Sep 17 00:00:00 2001
From: hyejjun <hjlee9725@gmail.com>
Date: Wed, 11 Sep 2024 11:53:24 +0900
Subject: [PATCH 1/3] Best Time to Buy And Sell Stock

---
 best-time-to-buy-and-sell-stock/hyejjun.js | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 best-time-to-buy-and-sell-stock/hyejjun.js

diff --git a/best-time-to-buy-and-sell-stock/hyejjun.js b/best-time-to-buy-and-sell-stock/hyejjun.js
new file mode 100644
index 000000000..048b453d0
--- /dev/null
+++ b/best-time-to-buy-and-sell-stock/hyejjun.js
@@ -0,0 +1,27 @@
+/**
+ * @param {number[]} prices
+ * @return {number}
+ */
+var maxProfit = function (prices) {
+  let minPrice = Infinity;
+  let maxProfit = 0;
+
+  for (let i = 0; i < prices.length; i++) {
+    if (prices[i] < minPrice) {
+      minPrice = prices[i];
+    } else {
+      maxProfit = Math.max(maxProfit, prices[i] - minPrice);
+    }
+  }
+
+  return maxProfit;
+
+};
+
+console.log(maxProfit([7, 1, 5, 3, 6, 4]));
+console.log(maxProfit([7, 6, 4, 3, 1]));
+
+/*
+시간 복잡도: O(n)
+공간 복잡도: O(1)
+*/

From facd449bd8dcba7a8bf34f6154abf2cdfe862b0c Mon Sep 17 00:00:00 2001
From: hyejjun <hjlee9725@gmail.com>
Date: Wed, 11 Sep 2024 12:17:42 +0900
Subject: [PATCH 2/3] Group Anagrams

---
 group-anagrams/hyejjun.js | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 group-anagrams/hyejjun.js

diff --git a/group-anagrams/hyejjun.js b/group-anagrams/hyejjun.js
new file mode 100644
index 000000000..9bf4980f6
--- /dev/null
+++ b/group-anagrams/hyejjun.js
@@ -0,0 +1,29 @@
+/**
+ * @param {string[]} strs
+ * @return {string[][]}
+ */
+var groupAnagrams = function (strs) {
+  let map = new Map();
+
+  for (let str of strs) {
+    let sortedStr = str.split('').sort().join('');
+
+    if (map.has(sortedStr)) {
+      map.get(sortedStr).push(str);
+    } else {
+      map.set(sortedStr, [str]);
+    }
+  }
+
+  return Array.from(map.values());
+};
+
+console.log(groupAnagrams(["eat", "tea", "tan", "ate", "nat", "bat"]));
+console.log(groupAnagrams([""]));
+console.log(groupAnagrams(["a"]));
+
+
+/*
+시간 복잡도: O(n*k log k)
+공간 복잡도: O(n*k)
+*/

From b363381b3b64dea5f94bc1d647d50da34ea3b98f Mon Sep 17 00:00:00 2001
From: hyejjun <hjlee9725@gmail.com>
Date: Sat, 14 Sep 2024 13:14:17 +0900
Subject: [PATCH 3/3] =?UTF-8?q?=EB=B3=B5=EC=9E=A1=EB=8F=84=20=EA=B3=84?=
 =?UTF-8?q?=EC=82=B0=20-=20=EC=B6=94=EA=B0=80=20=EC=84=A4=EB=AA=85?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 group-anagrams/hyejjun.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/group-anagrams/hyejjun.js b/group-anagrams/hyejjun.js
index 9bf4980f6..8d9f11a97 100644
--- a/group-anagrams/hyejjun.js
+++ b/group-anagrams/hyejjun.js
@@ -26,4 +26,7 @@ console.log(groupAnagrams(["a"]));
 /*
 시간 복잡도: O(n*k log k)
 공간 복잡도: O(n*k)
+
+n: 문자열의 개수
+k: 문자열의 최대 길이
 */