diff --git a/README.md b/README.md
index debb56b..2a82dbe 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,43 @@ Create a function that receives an integers array and returns the number that ap
 | (1,1,2)         | 2        |
 | (2,2,1)         | 1        |
 
+ansere 
+fun main() {
+    var numbers = arrayListOf<Int>(2,4,6,4,9,6,2)
+    var numbers2 = arrayListOf<Int>((1,1,2)
+    var numbers3 = arrayListOf<Int>(2,2,1)
+
+ fun main() {
+    var numbers = arrayListOf<Int>(2,4,6,4,9,6,2)
+    var numbers2 = arrayListOf<Int>((1,1,2)
+    var numbers3 = arrayListOf<Int>(2,2,1)
+
+    for ( 2 in [index])
+        if (numbers > inedx ){
+            return numbers
+        }
+=
+
+    for ( 1 in [index])
+        if (numbers > inedx ){
+            return numbers2
+        }
+  fun main() {
+
+
+    for (2 in [index])
+        if (numbers > inedx ){
+            return numbers3
+        }
+
+}
+
+}
+
+}
+  
+
+}
 
 ## 2nd Challenge
 Create a function that receives a string then it converts uppercase letters into lowercase and vice versa. The function then should print the converted value.
@@ -20,8 +57,17 @@ Create a function that receives a string then it converts uppercase letters into
 | Hello World    | hELLO wORLD    |
 | My name is Ali | mY NAME IS aLI |
 | sHroog         | ShROOG         |
+ 
+ 
+ ansore 
 
 
+fun main() {
+    var list = listOf<String>("Hello","Hello World","Hi","My name is Ali","sHroog")
+    println("${list.listIterator()}")
+
+}
+
 ## 3rd Challenge
 Create a function that receives an array of items & arrays and returns one flattened array with all items exluding null values.
 
@@ -32,6 +78,24 @@ Create a function that receives an array of items & arrays and returns one flatt
 | 3 | [[null, 3], [2, 4, 5, null], 0, 8, 3] | [3, 2, 4, 5, 0, 8, 3] |
 | 4 | [3, 5, [5, 9, 0]]                     | [3, 5, 5, 9, 0]       |
 
+  fun main(){
+  var num  = arrayListOf<Int>([1,[2,3,null,4],[null],5])
+  var num2 = arrayListOf<Int>([7, 0,[null],[null, null, 9]])
+  var num3 = arrayListOf<Int>([[null, 3], [2, 4, 5, null], 0, 8, 3])
+  var num4 = arrayListOf<Int>([3, 5, [5, 9, 0]])
+  
+  if(num != null  ){
+  printlin num}
+   if(num2 != null  ){
+  printlin num2}}
+  
+   if(num3 != null  ){
+  printlin num3}}
+  }
+   if(num4 != null  ){
+  printlin num4}
+  }
+  
 
 ## 4th Challenge
 Create a function that receives a string that contains combination of parentheses, square brackets, and curly braces. Then, it returns true if every opening bracket has a closing pair.
@@ -48,6 +112,15 @@ Create a function that receives a string that contains combination of parenthese
 | [{}]     | true     |
 | {[(}])   | true     |
 | {[}])    | false    |
-
+fun main(){
+  var x = readLine()
+  if (x == () && ({}) && {{()}} && [{}] && {[(}]))
+  {
+   return true
+  }
+  else {
+  false
+  }
+  }