From cad13857a96293708edd5529d860dceae496f32f Mon Sep 17 00:00:00 2001
From: Gordon Choi <thefirate@gmail.com>
Date: Tue, 11 Nov 2025 00:08:02 +0900
Subject: [PATCH 1/5] contains duplicate solution

---
 contains-duplicate/radiantchoi.swift | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 contains-duplicate/radiantchoi.swift

diff --git a/contains-duplicate/radiantchoi.swift b/contains-duplicate/radiantchoi.swift
new file mode 100644
index 0000000000..49eb29b32f
--- /dev/null
+++ b/contains-duplicate/radiantchoi.swift
@@ -0,0 +1,15 @@
+class Solution {
+    func containsDuplicate(_ nums: [Int]) -> Bool {
+        var occurences = [Int: Bool]()
+
+        for num in nums {
+            if let occurs = occurences[num] {
+                return occurs
+            } else {
+                occurences[num] = true
+            }
+        } 
+
+        return false
+    }
+}

From 18bebfac471ba7617d595229cef7bc820857dee3 Mon Sep 17 00:00:00 2001
From: Gordon Choi <thefirate@gmail.com>
Date: Tue, 11 Nov 2025 15:59:21 +0900
Subject: [PATCH 2/5] two sum solution

---
 two-sum/radiantchoi.swift | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 two-sum/radiantchoi.swift

diff --git a/two-sum/radiantchoi.swift b/two-sum/radiantchoi.swift
new file mode 100644
index 0000000000..ceb066d671
--- /dev/null
+++ b/two-sum/radiantchoi.swift
@@ -0,0 +1,26 @@
+class Solution {
+    func twoSum(_ nums: [Int], _ target: Int) -> [Int] {
+        let nums = nums.enumerated().sorted { $0.1 < $1.1 }
+
+        for (index, num) in nums {
+            let newTarget = target - num
+
+            var left = 0
+            var right = nums.count - 1
+
+            while left <= right {
+                let mid = (left + right) / 2
+
+                if nums[mid].1 == newTarget && nums[mid].0 != index {
+                    return [index, nums[mid].0]
+                } else if nums[mid].1 < newTarget {
+                    left = mid + 1
+                } else {
+                    right = mid - 1
+                }
+            }
+        }
+
+        return [0, 1]
+    }
+}
\ No newline at end of file

From 84d8fe6af38b90d5a792c4f6c67b3a11dfb4880d Mon Sep 17 00:00:00 2001
From: Gordon Choi <thefirate@gmail.com>
Date: Tue, 11 Nov 2025 16:00:02 +0900
Subject: [PATCH 3/5] =?UTF-8?q?fix:=20two=20sum=20soluition=20=EA=B0=9C?=
 =?UTF-8?q?=ED=96=89=20=EB=AC=B8=EC=9E=90=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 two-sum/radiantchoi.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/two-sum/radiantchoi.swift b/two-sum/radiantchoi.swift
index ceb066d671..0f801e86d4 100644
--- a/two-sum/radiantchoi.swift
+++ b/two-sum/radiantchoi.swift
@@ -23,4 +23,4 @@ class Solution {
 
         return [0, 1]
     }
-}
\ No newline at end of file
+}

From 51cd76c3d7afe58ca02e4df39c0c7d722d864c1d Mon Sep 17 00:00:00 2001
From: Gordon Choi <thefirate@gmail.com>
Date: Wed, 12 Nov 2025 16:05:20 +0900
Subject: [PATCH 4/5] top k frequent elements solution

---
 top-k-frequent-elements/radiantchoi.swift | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 top-k-frequent-elements/radiantchoi.swift

diff --git a/top-k-frequent-elements/radiantchoi.swift b/top-k-frequent-elements/radiantchoi.swift
new file mode 100644
index 0000000000..aeefba101f
--- /dev/null
+++ b/top-k-frequent-elements/radiantchoi.swift
@@ -0,0 +1,17 @@
+class Solution {
+    func topKFrequent(_ nums: [Int], _ k: Int) -> [Int] {
+        var occurences = [Int: Int]()
+
+        for num in nums {
+            if let occurence = occurences[num] {
+                occurences[num] = occurence + 1
+            } else {
+                occurences[num] = 1
+            }
+        }
+
+        let numbers = occurences.keys.sorted { occurences[$0] ?? 0 > occurences[$1] ?? 0 }
+
+        return Array(numbers[0..<k])
+    }
+}

From 3ef7f17db2e51939d3568618664d371d79e47f5b Mon Sep 17 00:00:00 2001
From: Gordon Choi <thefirate@gmail.com>
Date: Fri, 14 Nov 2025 18:58:06 +0900
Subject: [PATCH 5/5] house robber solution

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

diff --git a/house-robber/radiantchoi.swift b/house-robber/radiantchoi.swift
new file mode 100644
index 0000000000..3624b564f8
--- /dev/null
+++ b/house-robber/radiantchoi.swift
@@ -0,0 +1,20 @@
+class Solution {
+    func rob(_ nums: [Int]) -> Int {
+        if nums.count < 3 {
+            return nums.max()!
+        }
+
+        var expected = [Int]()
+        expected.append(nums[0])
+        expected.append(max(nums[0], nums[1]))
+
+        for i in 2..<nums.count {
+            let prev = expected[i - 1]
+            let prevPrev = expected[i - 2]
+
+            expected.append(max(prev, prevPrev + nums[i]))
+        }
+
+        return expected.removeLast()
+    }
+}