Leaderboard
Showing:
Level order traversal Line by Line
Easy Accuracy: 39.18% Submissions: 55723 Points: 2

Given a Binary Tree, your task is to find its level order traversal.
For the below tree the output will be 1 $ 2 3 $ 4 5 6 7 $ 8 $.

          1
       /     \
     2        3
   /    \     /   \
  4     5   6    7
    \
     8

Example 1:

Input:
          1
        /
       4
     /   \
    4     2
Output:1 $ 4 $ 4 2 $

Example 2:

Input:
            10
          /    \
        20      30
     /     \
    40     60
Output: 10 $ 20 30 $ 40 60 $

Your Task:
This is a function problem. You don't need to read input. Just complete the function levelOrder() that takes nodes as parameter and returns level order traversal as a 2D list.

Note: The driver code prints the levels '$' separated.
Expected Time Complexity: O(N).
Expected Auxiliary Space: O(N).

Constraints:
1 <= Number of edges <= 1000
0 <= Data of a node <= 100

to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes

All Submissions

My Submissions:

Login to access your submissions.

Level order traversal Line by Line

Output Window