Is this the right approach?

#1


Or should I go with printing at k level and do printing in less efficient way?

#2

@goyalvivek there there can be multiple ways to solve a question there’s no “right” or “wrong” way, some approaches are better space optimized some are better time optimized so you have to consider all the factors according to the situation and constraints.
You can check accuracy by submitting the solution

#3

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#4

please correct my code https://ide.codingblocks.com/s/631896

#5

Your approach is not correct
consider this case

                  20
                /    \
              8       22
            /   \      \
          5      3      25
                / \      
              10    14

Your Code output
20 8 22 3 5 25 10 14
but correcte output is
20 22 8 5 3 25 14 10

i think you got your mistake
you are are just fliping left and right data
but you have to reverse the complete level

Reference Code