InterviewBit Problems   Reverse Alternate K Nodes : Solved

About the Reverse Alternate K Nodes : Solved category (1)
Easy iterative solution o(n) without stack (1)
O(n) time & O(1) space simple, short and clear c++ solution (2)
Java easy stack solution reverse alternate k nodes in linked list (1)
Simplest C++ solution with stack and a flag (1)
C++ solution( same concept of reverse in groups) (1)
Easy soln to understand (1)
My C++ Approach, All Improvisations are welcomed! (4)
Java O(n) recursive solution (1)
Iterative Code O(1) space complexity O(N) time complexity (1)
C++ recursive solution idented (1)
Well Commented O(n) C++ Recursive Solution (1)