161. Write a function to find if a stack can be rearranged into a specific order.

162. Implement a function to swap two elements at specific indices in a stack.

163. Write a function to simulate a stack-based calculator.

164. Implement a function to check if a stack is empty before popping.

165. Write a function to simulate a stack-based game.

166. Implement a function to count how many times a specific element appears in a stack.

167. Write a function to get the first and last elements of a stack without popping.

168. Implement a function to find pairs of elements in a stack that multiply to a specific value.

169. Write a function to implement a stack of custom objects and perform operations.

170. Implement a function to reverse the order of elements in a stack using recursion.

171. Write a function to find the unique elements in a stack and return them as a list.

172. Implement a function to create a stack from user input.

173. Write a function to merge two stacks while removing duplicates.

174. Implement a function to check if a stack is sorted in descending order.

175. Write a function to get the top N smallest elements from a stack.

176. Implement a function to implement a stack that counts the number of operations.

177. Write a function to display the first three elements of the stack.

178. Implement a function to find the sum of the top N elements in a stack.

179. Write a function to check if the stack contains a specific element before popping.

180. Implement a function to simulate a real-world scenario using a stack.

181. Write a function to create a stack of integers from user input.

182. Implement a function to merge three stacks while preserving their order.

183. Write a function to generate a stack of prime numbers.

184. Implement a function to find the largest element that appears more than once in a stack.

185. Write a function to calculate the average of the top N elements in a stack.

186. Implement a function to perform basic arithmetic operations using a stack.

187. Write a function to find the longest increasing subsequence in a stack.

188. Implement a function to find the longest decreasing subsequence in a stack.

189. Write a function to count how many elements in a stack are greater than a specific value.

190. Implement a function to create a stack of random integers.

191. Write a function to push and pop elements based on user input.

192. Implement a function to find the minimum element in a stack that is not a duplicate.

193. Write a function to find the maximum element in a stack that is not a duplicate.

194. Implement a function to swap the bottom two elements of a stack.

195. Write a function to find pairs of elements in a stack that have a difference of a specific value.

196. Implement a function to remove all duplicate elements from a stack.

197. Write a function to check if the elements of a stack are in ascending order.

198. Implement a function to check if the elements of a stack are in descending order.

199. Write a function to simulate a stack-based memory management system.

200. Implement a function to create a stack of mixed data types and perform operations.