Create BuddyStrings

[String]Add Solution to Buddy Strings
[String] Add Solution to Buddy Strings
soapyigu · zhyizhou · zhyizhou · zhyizhou · Sep 23, 2019 · zhyizhou
diff --git a/String/BuddyStrings b/String/BuddyStrings
diff --git a/String/BuddyStrings b/String/BuddyStrings
diff --git a/String/BuddyStrings b/String/BuddyStrings
diff --git a/String/BuddyStrings b/String/BuddyStrings
diff --git a/README.md b/README.md
diff --git a/String/BuddyStrings b/String/BuddyStrings
+ * Memory Usage: 23.3 MB, less than 100.00% of Swift online submissions for Buddy Strings.
+ */
+
+ class BuddyStrings {
diff --git a/String/BuddyStrings b/String/BuddyStrings
@@ -0,0 +1,38 @@
+/**
diff --git a/String/BuddyStrings b/String/BuddyStrings
+/**
+ * Question Link: https://leetcode.com/problems/buddy-strings/
+ * Primary idea: 
+    1. return false/tru for absolute cases 
diff --git a/String/BuddyStrings b/String/BuddyStrings
+        if aLength != bLength || aLength == 0 { 
+            return false 
+        }
+        if A == B && Array(Set(A)).count != aLength { 
diff --git a/String/BuddyStrings b/String/BuddyStrings
+        }
+        let aArray = Array(A), bArray = Array(B)
+        var diff = [Character]()
+        for index in 0...aLength-1 {