C# || How To Traverse Binary Tree Level Order Using C#

Print Friendly, PDF & Email

The following is a module with functions which demonstrates how to traverse binary tree level order using C#.

1. Level Order – Problem Statement

Given the root of a binary tree, return the level order traversal of its nodes’ values. (i.e., from left to right, level by level).

Example 1:

Example 1

Input: root = [3,9,20,null,null,15,7]
Output: [[3],[9,20],[15,7]]

Example 2:

Input: root = [1]
Output: [[1]]

Example 3:

Input: root = []
Output: []

2. Level Order – Solution

The following is a solution which demonstrates how to traverse binary tree level order.

This solution uses Breadth First Search to explore items at each level.

The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

Once compiled, you should get this as your output for the example cases:


Was this article helpful?
👍 YesNo

Leave a Reply