Create 242-Valid-Anagrams.swift

Author: chandra9302

swift/242-Valid-Anagrams.swift

@@ -0,0 +1,25 @@
+/**
+ * Question Link: https://leetcode.com/problems/valid-anagram/
+ */
+
+class ValidAnagram {
+    func isAnagram(_ s: String, _ t: String) -> Bool {
+      if s.count != t.count {
+        return false
+      }
+      var countS = [Int:Int]()
+      var countT = [Int:Int]()
+      let sChars = Array(s)
+      let tChars = Array(t)
+      for i in 0..<sChars.count {
+          countS[Int(sChars[i].asciiValue!)] = 1 + countS[Int(sChars[i].asciiValue!), default: 0]
+          countT[Int(tChars[i].asciiValue!)] = 1 + countT[Int(tChars[i].asciiValue!), default: 0]
+      }
+      for (key, _) in countS {
+          if countS[key] != countT[key, default: 0] {
+              return false
+          }
+      }
+      return true
+    }
+}