Given a binary tree, find the largest value in each level.
Example 1:
Input : 1
/ \
2 3 Output : 1 3Explanation : There are two levels in the tree :
1. {1}, max = 12. {2, 3}, max = 3
Example 2:
Input : 4
/ \
9 2
/ \ \
3 5 7 Output : 4 9 7Explanation : There are three levels in the tree:1. {4}, max = 42. {9, 2}, max = 93. {3, 5, 7}, max=7
Your task :
You don't need to read input or print anything. Your task is to complete the function largestValues() which takes the root node of the tree as input and returns a vector containing the largest value in each level.
Expected Time Complexity : O(n) , where n = number of nodes
Expected Auxiliary Space : O(n) , where n = number of nodes
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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