Leetcode string

#1

In this problem they have not stated how the output should exactly be.Is it asking to print the 3 arrays ??

#2

in this question string is given to you and you have to return the nested list of integers

#3

Sir can you show the implementation to return the nested list of integers from the strings from c++

#4


this is my solution

better approach will be to use stack rather than recursion
image