Merge pull request #15 from Exarchiasghost/master

Updated searching and sorting README.md

Author: buckyroberts

Data_Structures/Arrays/Searching/README.md

@@ -1,17 +1,28 @@
 ![](http://i.imgur.com/BgUMUGU.png)
 
 # Searching
-This MD file serves as example/template. It will be filled up soon.
-
-(for Bucky to fill up)   
+In order to iterate an array more efficiently sometimes we have to search for the value instead of the place. The function **indexof()** helps us with that
 
 # Course Documentation
 
-(this for me to fill up with every element that you use in lessons. syntax explaination and links for more)  
 
-## Element to explain
+## .indexof()
+In our example:
+  
+
+    let items = [40, 68, 58, 12, 80, 37, 13, 63, 42, 3, 58];
+    console.log(items.indexOf(12)); // 3
+    console.log(items.indexOf(99)); // -1 (not found)
+    console.log(items.indexOf(58)); // 2
+    console.log(items.lastIndexOf(58)); // 10  
+
+  
+it is pretty forward that we use the function **.indexOF()** to find a specific value that is stored in our array.  
+For finding the value "a" in the array "anarray" we are using the following syntax:  
+
+    anarray.indexOF("a")  
 
-(for example console.log)
+  
 
 ##Javascript functions
 
@@ -125,4 +136,5 @@ stack in order to remove things from it.
 - [Twitter](https://twitter.com/bucky_roberts)
 - [Google+](https://plus.google.com/+BuckyRoberts)
 - [reddit](https://www.reddit.com/r/thenewboston/)
+
 > Written with [StackEdit](https://stackedit.io/).

Data_Structures/Arrays/Sorting/README.md

@@ -1,17 +1,44 @@
 ![](http://i.imgur.com/BgUMUGU.png)
 
 # Sorting
-This MD file serves as example/template. It will be filled up soon.
+Sometimes we need to sort the stored values of our array. In order to do that we usually use the .sort() function:
+  
 
-(for Bucky to fill up)   
+    console.log(items.sort()); 
 
 # Course Documentation
 
-(this for me to fill up with every element that you use in lessons. syntax explaination and links for more)  
+## .sort()
+
+According to [w3schools](http://www.w3schools.com/jsref/jsref_sort.asp):  
+  
+ "The sort() method sorts the items of an array.
+The sort order can be either alphabetic or numeric, and either ascending (up) or descending (down).
+By default, the sort() method sorts the values as strings in alphabetical and ascending order.
+This works well for strings ("Apple" comes before "Banana"). **However, if numbers are sorted as strings, "25" is bigger than "100", because "2" is bigger than "1".**
+Because of this, the sort() method will produce an incorrect result when sorting numbers.
+You can fix this by providing a "compare function" (See "Parameter Values" below)." 
+
+    let items = [1, 10, 17, 18, 2, 7, 3, 19, 14, 5];
+    console.log(items.reverse());
+    
+    // not what we wanted, because it sorts the numbers as if they are all strings
+    console.log(items.sort());
+
+###compareFunction
 
-## Element to explain
+Optional. A function that defines an alternative sort order. The function should return a negative, zero, or positive value, depending on the arguments, like:
 
-(for example console.log)
+    function(a, b){return a-b}
+
+When the sort() method compares two values, it sends the values to the compare function, and sorts the values according to the returned (negative, zero, positive) value.
+
+    items.sort(function (a, b) {
+        return a - b;
+    });
+    console.log(items);
+
+[Read more about sort() function on W3schools](http://www.w3schools.com/jsref/jsref_sort.asp).
 
 ##Javascript functions
 
@@ -124,4 +151,6 @@ stack in order to remove things from it.
 - [Twitter](https://twitter.com/bucky_roberts)
 - [Google+](https://plus.google.com/+BuckyRoberts)
 - [reddit](https://www.reddit.com/r/thenewboston/)
+  
+
 > Written with [StackEdit](https://stackedit.io/).