Can't understand problem in solution I have written!

#1

The solution-code I have written for this “straightening multilevel linkedList” question gives correct answer on my local computer

It also gives correct answer when I run “Compile and Test” on codingBlocks.

But when I “Submit Code”, it gives “Run Error” for all test-cases.

For better understanding of my code to others, I have given precise naming to functions and variables; And also used comments wherever necessary,

#2

Here is my soultion -

#3

Hey @maheshghamand
debug for this
INPUT
[1,2,3,4,5,null,null,null,7,8,9,null,null,11,12]

OUTPUT
[1, 2, 3, 7, 8, 11, 12, 9, 4, 5]

#4

Could you explain, how to convert (logic behind) this array into a multi-level graph as explained in “sample-input to sample-output” of the question !

According logic I have used until, for input you provided, the multilevel-list should look like this -

1->2->3->4->5->null
|  |
|  11-> 12
|
7->8->9->null

I could not understand where to connect “null” properly !

#5

Read its description https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/

#6

OK, thanks for the help.

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#7

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