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Average of Levels in Binary Tree
Depth-First Search
Average of Levels in Binary Tree
EasyTreeDepth-First SearchBreadth-First SearchBinary Tree
Given the
root of a binary tree, return the average value of the nodes on each level in the form of an array. Answers within 10-5 of the actual answer will be accepted.
Example 1:
Input: root = [3,9,20,null,null,15,7]
Output: [3.00000,14.50000,11.00000]
Explanation: The average value of nodes on level 0 is 3, on level 1 is 14.5, and on level 2 is 11.
Hence return [3, 14.5, 11].
Example 2:
Input: root = [3,9,20,15,7]
Output: [3.00000,14.50000,11.00000]
Constraints:
- The number of nodes in the tree is in the range
[1, 104]. -231 <= Node.val <= 231 - 1
Examples
Example 1
Input:
[3,9,20,null,null,15,7]Output:
[3.00000,14.50000,11.00000]Example 2
Input:
[3,9,20,15,7]Output:
[3.00000,14.50000,11.00000]Loading...
[3,9,20,null,null,15,7]
[3.00000,14.50000,11.00000]