diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..9d33b89
Binary files /dev/null and b/.DS_Store differ
diff --git a/cha.playground/Contents.swift b/cha.playground/Contents.swift
new file mode 100644
index 0000000..77327e6
--- /dev/null
+++ b/cha.playground/Contents.swift
@@ -0,0 +1,32 @@
+import UIKit
+
+var arr = [1,2,3,4,5]
+func arrmin(num:[Int]) -> Int {
+    
+    return num.min()!
+}
+
+func arrmax(num:[Int]) -> Int {
+    
+    return num.max()!
+}
+print(arrmin(num: arr))
+print(arrmax(num: arr))
+
+
+
+var arr2 = [3, 5, [5, 9, 0]] as [Any]
+
+for x in arr2 {
+    for num in [x] {
+        print(num)
+    }
+}
+
+var word = "ehab"
+
+print(word.lowercased())
+
+
+
+
diff --git a/cha.playground/contents.xcplayground b/cha.playground/contents.xcplayground
new file mode 100644
index 0000000..cf026f2
--- /dev/null
+++ b/cha.playground/contents.xcplayground
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios' buildActiveScheme='true' importAppTypes='true'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>
\ No newline at end of file
diff --git a/cha.playground/playground.xcworkspace/contents.xcworkspacedata b/cha.playground/playground.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..ca3329e
--- /dev/null
+++ b/cha.playground/playground.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:">
+   </FileRef>
+</Workspace>
diff --git a/cha.playground/playground.xcworkspace/xcuserdata/ehabhakmi.xcuserdatad/UserInterfaceState.xcuserstate b/cha.playground/playground.xcworkspace/xcuserdata/ehabhakmi.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..03d0b20
Binary files /dev/null and b/cha.playground/playground.xcworkspace/xcuserdata/ehabhakmi.xcuserdatad/UserInterfaceState.xcuserstate differ