Handle Score
@Ibrahim Nash 6420
@blackshadows 6380
@mb1973 5642
@Quandray 5233
@akhayrutdinov 5111
@saiujwal13083 4610
@sanjay05 3762
@kirtidee18 3673
@marius_valentin_dragoi 3522
@sushant_a 3459
@verma_ji 3413
Complete Leaderboard
Children Sum Parent
Easy Accuracy: 50.49% Submissions: 26105 Points: 2

Given a Binary Tree. Check whether all of its nodes have the value equal to the sum of their child nodes.

Example 1:

Output: 1
Explanation: Here, every node is sum of
its left and right child.

Example 2:

     /   \
    4     3
   /  \
  5    N
Output: 0
Explanation: Here, 1 is the root node
and 4, 3 are its child nodes. 4 + 3 =
7 which is not equal to the value of
root node. Hence, this tree does not
satisfy the given conditions.

Your Task:
You don't need to read input or print anything. Your task is to complete the function
isSumProperty() that takes the root Node of the Binary Tree as input and returns 1 if all the nodes in the tree satisfy the following properties. Else, it returns 0.
For every node, data value must be equal to the sum of data values in left and right children. Consider data value as 0 for NULL child.  Also, leaves are considered to follow the property.

Expected Time Complexiy: O(N).
Expected Auxiliary Space: O(Height of the Tree).


1 <= N <= 105
1 <= Data on nodes <= 105

to report an issue on this page.


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


All Submissions

My Submissions:

Login to access your submissions.

Children Sum Parent

Output Window