diff --git a/challeng.playground/Contents.swift b/challeng.playground/Contents.swift
new file mode 100644
index 0000000..b20a582
--- /dev/null
+++ b/challeng.playground/Contents.swift
@@ -0,0 +1,57 @@
+import UIKit
+
+var greeting = "Hello, playground"
+
+var array1 = [2,4,6,4,9,6,2]
+var array2 = [1,1,2]
+var array3 = [2,2,1]
+
+
+ for x in array1 {
+ if x == 9 {
+ print(x)
+ }}
+
+ for y in array2 {
+ if y == 2 {
+ print(y)
+ }
+ }
+ for z in array3 {
+ if z == 1 {
+ print(z)
+
+ }
+ }
+
+//__________________________________________
+
+var arr1 :[Any] = [1,[2,3,nil,4],[nil],5]
+var arr2 : [Any] = [7, 0,[nil],[nil, nil, 9]]
+var arr3 : [Any] = [[nil, 3], [2, 4, 5, nil], 0, 8, 3]
+var arr4 : [Any] = [3, 5, [5, 9, 0]]
+
+for x in arr1 {
+ if x != nil {
+ print(x)
+ }
+}
+
+ for x in arr2 {
+ if x != nil {
+ print(x)
+ }
+}
+
+for x in arr3 {
+ if x != nil {
+ print(x)
+ }
+}
+
+for x in arr4 {
+ if x != nil {
+ print(x)
+ }
+}
+
diff --git a/challeng.playground/contents.xcplayground b/challeng.playground/contents.xcplayground
new file mode 100644
index 0000000..cf026f2
--- /dev/null
+++ b/challeng.playground/contents.xcplayground
@@ -0,0 +1,4 @@
+
+
+
+
\ No newline at end of file
diff --git a/challeng.playground/playground.xcworkspace/contents.xcworkspacedata b/challeng.playground/playground.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..ca3329e
--- /dev/null
+++ b/challeng.playground/playground.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+
+
+
+
+
diff --git a/challeng.playground/playground.xcworkspace/xcuserdata/ralthebailah.xcuserdatad/UserInterfaceState.xcuserstate b/challeng.playground/playground.xcworkspace/xcuserdata/ralthebailah.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..8d14d87
Binary files /dev/null and b/challeng.playground/playground.xcworkspace/xcuserdata/ralthebailah.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/challeng.playground/timeline.xctimeline b/challeng.playground/timeline.xctimeline
new file mode 100644
index 0000000..b8a6802
--- /dev/null
+++ b/challeng.playground/timeline.xctimeline
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+