I was trying to find the min depth of a binary tree, code snippet is given below it is throwing a null pointer exception can someone pls help me
49
What is a NullPointerException, and how do I fix it?
101146
Why can't I write Nullable>?
155761
Retrieving the Min element in a stack in O(1) Time
24249
When is the Killing form null?
56606
Why is main() in java void?
98866
Null Pointer Exception on getGraphics()
138618
How to resolve NullPointerException error in my below POM code?
158128
Trie data structures - Java
480
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
149666
Why can't a null-reference exception name the object that has a null reference?
108336
Nullable Object must have a value #2
13767
Number of nodes in binary tree given number of leaves
19198
Does assigning objects to null in Java impact garbage collection?
151469
What is the difference between null and System.DBNull.Value?
29684
How to check if an object is nullable?
114349
What is a null-terminated string?
56124
Why do I get "Exception; must be caught or declared to be thrown" when I try to compile my Java code?