From d499e622d593345b1e746aaab0dcbcf976f13cd1 Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 2 Sep 2024 11:57:40 +0100
Subject: [PATCH] feat: add swift implementation to lcof2 problem: No.086
 (#3471)

---
 .../README.md"                                | 43 +++++++++++++++++++
 .../Solution.swift"                           | 38 ++++++++++++++++
 2 files changed, 81 insertions(+)
 create mode 100644 "lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/Solution.swift"

diff --git "a/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/README.md" "b/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/README.md"
index 29b5e9db2fcee..7fffa67082866 100644
--- "a/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/README.md"	
+++ "b/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/README.md"	
@@ -285,6 +285,49 @@ public class Solution {
 }
 ```
 
+#### Swift
+
+```swift
+class Solution {
+    private var n: Int = 0
+    private var s: String = ""
+    private var f: [[Bool]] = []
+    private var t: [String] = []
+    private var ans: [[String]] = []
+
+    func partition(_ s: String) -> [[String]] {
+        n = s.count
+        self.s = s
+        f = Array(repeating: Array(repeating: true, count: n), count: n)
+        
+        let chars = Array(s)
+        
+        for i in stride(from: n - 1, through: 0, by: -1) {
+            for j in i + 1 ..< n {
+                f[i][j] = chars[i] == chars[j] && f[i + 1][j - 1]
+            }
+        }
+        
+        dfs(0)
+        return ans
+    }
+
+    private func dfs(_ i: Int) {
+        if i == n {
+            ans.append(t)
+            return
+        }
+        for j in i ..< n {
+            if f[i][j] {
+                t.append(String(s[s.index(s.startIndex, offsetBy: i)...s.index(s.startIndex, offsetBy: j)]))
+                dfs(j + 1)
+                t.removeLast()
+            }
+        }
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->
diff --git "a/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/Solution.swift" "b/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/Solution.swift"
new file mode 100644
index 0000000000000..23a5d4200ef8d
--- /dev/null
+++ "b/lcof2/\345\211\221\346\214\207 Offer II 086. \345\210\206\345\211\262\345\233\236\346\226\207\345\255\220\345\255\227\347\254\246\344\270\262/Solution.swift"	
@@ -0,0 +1,38 @@
+class Solution {
+    private var n: Int = 0
+    private var s: String = ""
+    private var f: [[Bool]] = []
+    private var t: [String] = []
+    private var ans: [[String]] = []
+
+    func partition(_ s: String) -> [[String]] {
+        n = s.count
+        self.s = s
+        f = Array(repeating: Array(repeating: true, count: n), count: n)
+        
+        let chars = Array(s)
+        
+        for i in stride(from: n - 1, through: 0, by: -1) {
+            for j in i + 1 ..< n {
+                f[i][j] = chars[i] == chars[j] && f[i + 1][j - 1]
+            }
+        }
+        
+        dfs(0)
+        return ans
+    }
+
+    private func dfs(_ i: Int) {
+        if i == n {
+            ans.append(t)
+            return
+        }
+        for j in i ..< n {
+            if f[i][j] {
+                t.append(String(s[s.index(s.startIndex, offsetBy: i)...s.index(s.startIndex, offsetBy: j)]))
+                dfs(j + 1)
+                t.removeLast()
+            }
+        }
+    }
+}
\ No newline at end of file