updated c++ hierarchy

Author: GauravWalia19

C++/Data-Structures/.gitignore C++/.gitignore

@@ -12,6 +12,10 @@
 * [2 DIMENSIONAL ARRAY](Data-Structures/ARRAYS/2darrays.cpp)
 * [3 DIMENSIONAL ARRAY](Data-Structures/ARRAYS/3darrays.cpp)
 * [4 DIMENSIONAL ARRAY](Data-Structures/ARRAYS/4darrays.cpp)
+* INBUILT ARRAY CLASSES
+  * ARRAY CLASS
+* MISC
+  * JAGGED ARRAY
 
 #### LISTS
 
@@ -20,27 +24,25 @@
     * [SINGLE](Data-Structures/LISTS/LINKED-LIST/SINGLE/Main.cpp)
   * DOUBLE
   * CIRCULAR
-* [VECTORS](Data-Structures/LISTS/VECTORS/Main.cpp)
+* MEMORY EFFICIENT DOUBLE LINKED LIST
+* UNROLLED LINKED LIST
+* SKIP LIST
+* INBUILT LISTS
+  * [VECTORS](Data-Structures/LISTS/INBUILT-LISTS/VECTORS/Main.cpp)
 
 #### STACKS
 
-##### ONE WAY STACK
-
-* [STACK](Data-Structures/STACKS/Stack.hpp)
-* [USAGE](Data-Structures/STACKS/Stack.cpp)
-* [GUIDE TO STACK](Data-Structures/STACKS/stacks.md)
-
-##### TWO WAY STACK
-
-* [STACK](Data-Structures/STACKS/Tstack.hpp)
-* [USAGE](Data-Structures/STACKS/two-way-stack.cpp)
-* [GUIDE TO STACK](Data-Structures/STACKS/stacks.md)
-
-##### CIRCULAR STACK
-
-##### INBUILT STACK
-
-* [Inbuilt stack library](Data-Structures/STACKS/stack.cpp)
+* FIXED ARRAY STACK
+  * [STACK](Data-Structures/STACKS/Stack.hpp)
+  * [USAGE](Data-Structures/STACKS/Stack.cpp)
+* DYNAMIC ARRAY STACK
+* LINKED STACK
+* INBUILT STACKS
+  * [STACK CLASS](Data-Structures/STACKS/INBUILT-STACK/stack.cpp)
+* MISC
+  * TWO WAY
+    * [STACK](Data-Structures/STACKS/MISC/TWO-WAY/Tstack.hpp)
+    * [USAGE](Data-Structures/STACKS/MISC/TWO-WAY/two-way-stack.cpp)
 
 #### HEAPS
 

C++/Data-Structures/ARRAYS/.gitignore

@@ -14,7 +14,8 @@
 * [2 DIMENSIONAL ARRAYS](Data-Structures/ARRAYS/2darrays.c)
 * [3 DIMENSIONAL ARRAYS](Data-Structures/ARRAYS/3darrays.c)
 * [4 DIMENSIONAL ARRAYS](Data-Structures/ARRAYS/4darrays.c)
-* [JAGGED ARRAYS](Data-Structures/ARRAYS/jaggedarray.c)
+* MISC
+  * [JAGGED ARRAYS](Data-Structures/ARRAYS/MISC/jaggedarray.c)
 
 #### LISTS
 
@@ -24,6 +25,9 @@
   * DOUBLE
     * [DOUBLE LINKED LIST](Data-Structures/LINKED-LIST/DOUBLE/Main.c)
   * CIRCULAR
+* MEMORY EFFICIENT DOUBLE LINKED LIST
+* UNROLLED LINKED LIST
+* SKIP LIST
 
 #### HEAPS
 

C++/Data-Structures/LISTS/VECTORS/Main.cpp C++/Data-Structures/LISTS/INBUILT-LISTS/VECTORS/Main.cpp

@@ -56,11 +56,11 @@ This page contains the complexities of different algorithms in this repository.
     * [2D ARRAY](#2d-array)
     * [3D ARRAY](#3d-array)
     * [4D ARRAY](#4d-array)
-    * [MISC ARRAYS](#misc-arrays)
-      * [JAGGED ARRAY](#jagged-array)
     * [INBUILT ARRAY CLASSES](#inbuilt-array-classes)
       * [ARRAYS CLASS IN JAVA](#arrays-class-in-java)
       * ARRAY CLASS IN C++
+    * [MISC ARRAYS](#misc-arrays)
+      * [JAGGED ARRAY](#jagged-array)
   * [LISTS](#lists)
     * SINGLE
       * [SINGULAR LINKED LIST](#singular-linked-list-having-head-and-next)