InterviewBit Problems   Swap List Nodes in pairs : Unsolved


About the Swap List Nodes in pairs : Unsolved category (1)
VV Easy to understand C++ soln (1)
Just read before start (3)
What the problem in this code? (2)
Stupid question took me over 2 hrs(copied from gfg) (1)
Though it says O(1) space, recursive solution got accepted (4)
What is wrong with this code? Please help (2)
Python solution wenja easy (1)
Swift has test case input ptoblem. Do try to work in swift (1)
Unable to identify error in the code (3)
What is error in this code (1)
Tried the 1->2->3->4 and the output its not the correct answer (3)
This question has to be solved in what time complexity . it says time limit eexce (2)
Why memory limit is 80 MB when only constant space is allowed? While in Memory co (2)