# program to count leaf nodes in a binary tree in java

If you want to practice data structure and algorithm programs, you can go through 100+ java coding interview questions.

This is 8th part of java binary tree tutorial.

## Java Binary tree tutorial:

In this post, we will see about program to count leaf nodes in a binary tree in java

#### Algorithm-

Steps for counting number of leaf nodes are:
• If node is null then return 0
• If encountered leaf node(i.e. node.left is null and node.right is null) then return 1.
• Recursively calculate number of leaf nodes using
Code for recursion will be:
Lets create java program for counting number of leaf nodes:
Run above program and you will get following output:
Please go through Frequently asked java interview programs  for more such programs.

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