Print All Paths From Root In a Binary Tree Whose Sum is Equal to a Given Number

Objective: – Given a binary tree and X, Print all the paths starting from root so that sum of all the nodes in path equals to a given number.
Example:

Approach:

• Create a global variable as String = path.
• Do the preorder
• if root is greater than Sum required, return.
• If not then, add root to the path and update the required sum (sum=sum-root.data).
• if sum required =0, means we have found the path, print it.
• See the code for better understanding.

Code:

Output:

1 2 7
1 3 6