Re-arranged the modules

Author: Ismael144

src/data_structures/mod.rs

@@ -5,12 +5,12 @@ mod fenwick_tree;
 mod floyds_algorithm;
 pub mod graph;
 mod hash_table;
-mod queue_using_singly_linked_list;
 mod heap;
 mod lazy_segment_tree;
 mod linked_list;
 mod probabilistic;
 mod queue;
+mod queue_using_singly_linked_list;
 mod range_minimum_query;
 mod rb_tree;
 mod segment_tree;
@@ -21,7 +21,6 @@ mod trie;
 mod union_find;
 mod veb_tree;
 
-pub use self::queue_using_singly_linked_list::LinkedListQueue;
 pub use self::avl_tree::AVLTree;
 pub use self::b_tree::BTree;
 pub use self::binary_search_tree::BinarySearchTree;
@@ -36,6 +35,7 @@ pub use self::linked_list::LinkedList;
 pub use self::probabilistic::bloom_filter;
 pub use self::probabilistic::count_min_sketch;
 pub use self::queue::Queue;
+pub use self::queue_using_singly_linked_list::LinkedListQueue;
 pub use self::range_minimum_query::RangeMinimumQuery;
 pub use self::rb_tree::RBTree;
 pub use self::segment_tree::SegmentTree;