Given a Binary Tree, you need to find the maximum value which you can get by subtracting the value of node B from the value of node A, where A and B are two nodes of the binary tree and A is an ancestor of B.
Input: 5 / \ 2 1 Output: 4 Explanation:The maximum difference we can get is 4, which is bewteen 5 and 1.
Input: 1 / \ 2 3 \ 7 Output: -1 Explanation:The maximum difference we can get is -1, which is between 1 and 2.
The task is to complete the function maxDiff() which finds the maximum difference between the node and its ancestor.
Expected Time Complexity: O(N).
Expected Auxiliary Space: O(H).
Note: H is the height of the tree.
1 <= Number of edges <= 104
0 <= Data of a node <= 105
Note: The Input/Output format and Examples given are used for the system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from the stdin/console. The task is to complete the function specified, and not to write the full code.
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