From 6d6a640cb27ca13aa6a6eaabfacd4996d69cb6d5 Mon Sep 17 00:00:00 2001
From: prgmr99 <johnyeom24@naver.com>
Date: Mon, 10 Nov 2025 18:03:32 +0900
Subject: [PATCH 1/5] two sum solution

---
 two-sum/prgmr99.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 two-sum/prgmr99.js

diff --git a/two-sum/prgmr99.js b/two-sum/prgmr99.js
new file mode 100644
index 0000000000..aa07d87353
--- /dev/null
+++ b/two-sum/prgmr99.js
@@ -0,0 +1,19 @@
+/**
+ * @param {number[]} nums
+ * @param {number} target
+ * @return {number[]}
+ */
+var twoSum = function (nums, target) {
+  const numMap = new Map();
+
+  for (let i = 0; i < nums.length; i++) {
+    const firstNum = nums[i];
+    const secondNum = target - nums[i];
+
+    if (numMap.has(secondNum)) {
+      return [numMap.get(secondNum), i];
+    }
+
+    numMap.set(firstNum, i);
+  }
+};

From b1728a94c19192abb6946487388d0029cffcf026 Mon Sep 17 00:00:00 2001
From: prgmr99 <johnyeom24@naver.com>
Date: Tue, 11 Nov 2025 09:04:52 +0900
Subject: [PATCH 2/5] contains duplicate solution

---
 contains-duplicate/prgmr99.js | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 contains-duplicate/prgmr99.js

diff --git a/contains-duplicate/prgmr99.js b/contains-duplicate/prgmr99.js
new file mode 100644
index 0000000000..9022d2a78d
--- /dev/null
+++ b/contains-duplicate/prgmr99.js
@@ -0,0 +1,10 @@
+/**
+ * @param {number[]} nums
+ * @return {boolean}
+ */
+var containsDuplicate = function (nums) {
+  const numArrLength = nums.length;
+  const numSetSize = new Set(nums).size;
+
+  return numArrLength !== numSetSize;
+};

From 10b4ae1f77516b1451786e8dc60339cbaa409f35 Mon Sep 17 00:00:00 2001
From: prgmr99 <johnyeom24@naver.com>
Date: Tue, 11 Nov 2025 21:52:41 +0900
Subject: [PATCH 3/5] top-k-frequent-elements solution

---
 top-k-frequent-elements/prgmr99.js | 33 ++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 top-k-frequent-elements/prgmr99.js

diff --git a/top-k-frequent-elements/prgmr99.js b/top-k-frequent-elements/prgmr99.js
new file mode 100644
index 0000000000..9abe29121b
--- /dev/null
+++ b/top-k-frequent-elements/prgmr99.js
@@ -0,0 +1,33 @@
+/**
+ * @param {number[]} nums
+ * @param {number} k
+ * @return {number[]}
+ */
+var topKFrequent = function (nums, k) {
+  const result = [];
+  const numMap = new Map();
+
+  for (let i = 0; i < nums.length; i++) {
+    const currentValue = numMap.get(nums[i]);
+
+    if (currentValue) {
+      numMap.set(nums[i], currentValue + 1);
+    } else {
+      numMap.set(nums[i], 1);
+    }
+  }
+
+  const mapToArr = [...numMap.entries()];
+
+  mapToArr.sort((a, b) => {
+    if (a[1] < b[1]) return 1;
+    if (a[1] > b[1]) return -1;
+    return 0;
+  });
+
+  for (let i = 0; i < k; i++) {
+    result.push(mapToArr[i][0]);
+  }
+
+  return result;
+};

From 63b08eaa2b3fb421ae1cee87765d451d0a8f9a8f Mon Sep 17 00:00:00 2001
From: prgmr99 <johnyeom24@naver.com>
Date: Thu, 13 Nov 2025 20:22:56 +0900
Subject: [PATCH 4/5] longest-consecutive-sequence solution

---
 longest-consecutive-sequence/prgmr99.js | 33 +++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 longest-consecutive-sequence/prgmr99.js

diff --git a/longest-consecutive-sequence/prgmr99.js b/longest-consecutive-sequence/prgmr99.js
new file mode 100644
index 0000000000..e5b0d34154
--- /dev/null
+++ b/longest-consecutive-sequence/prgmr99.js
@@ -0,0 +1,33 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var longestConsecutive = function (nums) {
+  let result = 1;
+  let maxLength = 1;
+
+  if (nums.length === 0) return 0;
+
+  const sortedNums = nums.sort((a, b) => a - b);
+
+  for (let i = 1; i < sortedNums.length; i++) {
+    const prevNum = sortedNums[i - 1];
+    const currentNum = sortedNums[i];
+
+    const diff = currentNum - prevNum;
+
+    if (diff === 1) {
+      result += 1;
+
+      if (maxLength < result) {
+        maxLength = result;
+      }
+    } else if (diff === 0) {
+      continue;
+    } else {
+      result = 1;
+    }
+  }
+
+  return maxLength;
+};

From f523c84eda841dc0b832ae86b149c66527ff29a4 Mon Sep 17 00:00:00 2001
From: prgmr99 <johnyeom24@naver.com>
Date: Fri, 14 Nov 2025 21:46:44 +0900
Subject: [PATCH 5/5] house-robber solution

---
 house-robber/prgmr99.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 house-robber/prgmr99.js

diff --git a/house-robber/prgmr99.js b/house-robber/prgmr99.js
new file mode 100644
index 0000000000..16b7357cfd
--- /dev/null
+++ b/house-robber/prgmr99.js
@@ -0,0 +1,20 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var rob = function (nums) {
+  let maxMoneyAtPrevHouse = 0;
+  let maxMoneyAtTwoHousesBack = 0;
+
+  for (let i = 0; i < nums.length; i++) {
+    let currentMax = Math.max(
+      nums[i] + maxMoneyAtTwoHousesBack,
+      maxMoneyAtPrevHouse
+    );
+
+    maxMoneyAtTwoHousesBack = maxMoneyAtPrevHouse;
+    maxMoneyAtPrevHouse = currentMax;
+  }
+
+  return maxMoneyAtPrevHouse;
+};