121. Split a singly linked list into even and odd positioned nodes.
122. Split a doubly linked list into even and odd positioned nodes.
123. Split a circular doubly linked list into even and odd positioned nodes.
124. Merge two linked lists alternatively.
125. Merge two doubly linked lists alternatively.
126. Merge two circular linked lists alternatively.
127. Merge two circular doubly linked lists alternatively.
128. Delete all even-positioned nodes from a singly linked list.
129. Delete all even-positioned nodes from a doubly linked list.
130. Delete all even-positioned nodes from a circular linked list.
131. Delete all even-positioned nodes from a circular doubly linked list.
132. Delete all odd-positioned nodes from a singly linked list.
133. Delete all odd-positioned nodes from a doubly linked list.
134. Delete all odd-positioned nodes from a circular linked list.
135. Delete all odd-positioned nodes from a circular doubly linked list.
136. Swap the first and last nodes of a singly linked list.
137. Swap the first and last nodes of a doubly linked list.
138. Swap the first and last nodes of a circular linked list.
139. Swap the first and last nodes of a circular doubly linked list.
140. Delete all nodes with even values from a singly linked list.
141. Delete all nodes with even values from a doubly linked list.
142. Delete all nodes with even values from a circular linked list.
143. Delete all nodes with even values from a circular doubly linked list.
144. Delete all nodes with odd values from a singly linked list.
145. Delete all nodes with odd values from a doubly linked list.
146. Delete all nodes with odd values from a circular linked list.
147. Delete all nodes with odd values from a circular doubly linked list.
148. Swap adjacent nodes in a singly linked list.
149. Swap adjacent nodes in a doubly linked list.
150. Swap adjacent nodes in a circular linked list.
151. Swap adjacent nodes in a circular doubly linked list.
152. Find the second largest element in a singly linked list.
153. Find the second largest element in a doubly linked list.
154. Find the second largest element in a circular linked list.
155. Find the second largest element in a circular doubly linked list.
156. Count the number of prime elements in a singly linked list.
157. Count the number of prime elements in a doubly linked list.
158. Count the number of prime elements in a circular linked list.
159. Count the number of prime elements in a circular doubly linked list.
160. Reverse every k nodes in a singly linked list.