From 9e3b9fbd866be99758ae4efa86ec6e49bc788fbf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=84=B1=ED=9B=88?= <ksnughnu@gmail.com>
Date: Thu, 5 Feb 2026 10:29:37 +0900
Subject: [PATCH] =?UTF-8?q?=ED=95=98=ED=95=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Oliver.swift"                             | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 "WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[1\354\260\250] \353\211\264\354\212\244 \355\201\264\353\237\254\354\212\244\355\204\260\353\247\201/Oliver.swift"

diff --git "a/WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[1\354\260\250] \353\211\264\354\212\244 \355\201\264\353\237\254\354\212\244\355\204\260\353\247\201/Oliver.swift" "b/WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[1\354\260\250] \353\211\264\354\212\244 \355\201\264\353\237\254\354\212\244\355\204\260\353\247\201/Oliver.swift"
new file mode 100644
index 0000000..d2af389
--- /dev/null
+++ "b/WEEK03/\355\224\204\353\241\234\352\267\270\353\236\230\353\250\270\354\212\244_[1\354\260\250] \353\211\264\354\212\244 \355\201\264\353\237\254\354\212\244\355\204\260\353\247\201/Oliver.swift"	
@@ -0,0 +1,42 @@
+func solution(_ str1: String, _ str2: String) -> Int {
+    let jac = jaccard(str1, str2)
+    return Int(jac * 65536)
+}
+
+// 자카드 유사도
+func jaccard(_ s1: String, _ s2: String) -> Double {
+    let set1 = makeSet(s1)
+    var set2 = makeSet(s2)
+
+    if set1.isEmpty && set2.isEmpty { return 1.0 }
+
+    var intersection: [String] = []
+    var unionCount: Int = 0
+
+    for element in set1 {
+        if let idx = set2.firstIndex(of: element) {
+            intersection.append(element)
+            set2.remove(at: idx)
+        }
+    }
+
+    unionCount = set1.count + set2.count
+    return Double(intersection.count) / Double(unionCount)
+}
+
+// 집합 만들기
+func makeSet(_ string: String) -> [String] {
+    let chars = Array(string.lowercased())
+    var result: [String] = []
+
+    for i in 0..<chars.count-1 {
+        let c1 = chars[i]
+        let c2 = chars[i+1]
+
+        if c1.isLetter && c2.isLetter {
+            result.append(String([c1, c2]))
+        }
+    }
+
+    return result
+}