Recursion in Python with Tests

Recursion holds 40 problems (8 Easy, 19 Medium, 13 Hard). Generate any of them into the current directory with lcpy gen -n <number>.

#	Problem	Difficulty	Solution
2	Add Two Numbers	Medium	solution.py
10	Regular Expression Matching	Hard	solution.py
21	Merge Two Sorted Lists	Easy	solution.py
24	Swap Nodes in Pairs	Medium	solution.py
25	Reverse Nodes in k-Group	Hard	solution.py
44	Wildcard Matching	Hard	solution.py
50	Pow(x, n)	Medium	solution.py
60	Permutation Sequence	Hard	solution.py
143	Reorder List	Medium	solution.py
203	Remove Linked List Elements	Easy	solution.py
206	Reverse Linked List	Easy	solution.py
224	Basic Calculator	Hard	solution.py
231	Power of Two	Easy	solution.py
233	Number of Digit One	Hard	solution.py
234	Palindrome Linked List	Easy	solution.py
241	Different Ways to Add Parentheses	Medium	solution.py
247	Strobogrammatic Number II	Medium	solution.py
248	Strobogrammatic Number III	Hard	solution.py
255	Verify Preorder Sequence in Binary Search Tree	Medium	solution.py
273	Integer to English Words	Hard	solution.py
326	Power of Three	Easy	solution.py
342	Power of Four	Easy	solution.py
390	Elimination Game	Medium	solution.py
394	Decode String	Medium	solution.py
439	Ternary Expression Parser	Medium	solution.py
486	Predict the Winner	Medium	solution.py
509	Fibonacci Number	Easy	solution.py
544	Output Contest Matches	Medium	solution.py
736	Parse Lisp Expression	Hard	solution.py
770	Basic Calculator IV	Hard	solution.py
772	Basic Calculator III	Hard	solution.py
779	K-th Symbol in Grammar	Medium	solution.py
894	All Possible Full Binary Trees	Medium	solution.py
1106	Parsing A Boolean Expression	Hard	solution.py
1265	Print Immutable Linked List in Reverse	Medium	solution.py
1545	Find Kth Bit in Nth Binary String	Medium	solution.py
1611	Minimum One Bit Operations to Make Integers Zero	Hard	solution.py
1780	Check if Number is a Sum of Powers of Three	Medium	solution.py
1823	Find the Winner of the Circular Game	Medium	solution.py
2487	Remove Nodes From Linked List	Medium	solution.py

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Recursion in Python with Tests