To sort documents in MongoDB, use sort() method. sort() method accepts a document containing list of fields along with their sorting order. 1 is used for ascending order while -1 is used for descending order.
The basic syntax of sort() method is as follows
>db.COLLECTION_NAME.find().sort({KEY:1})
The following example will display the documents sorted by title in descending order.
>db.mycol.find({},{"title":1,_id:0}).sort({"title":-1})
>
The default sorting order for sort() method is ascending order.