Hierarchical data with parent & child relationships are very common, and Java collection does not have a Tree data structure, hence it is a popular interview question. Further questions include tree data structure processing using recursiion &
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Home › Java & Big Data Interview FAQs › 150+ Java coding interview Q&As › Coding - Data Structures › Archive for Coding – Tree structure
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01: Tree flattening example in Java with Generics
Q. Traverse the tree in depth and return a list of all passed nodes. It should handle different data types as Double, String, etc. The interface for the tree node...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs02: Tree structure – calculate average recursively & iteratively in Java
Q. Complete the following “TreeProcessingImpl” class ….. so that the unit tests shown below pass? Skeleton Code Unit Tests A. … Read more ›...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs03: Tree traversal algorithms in Java
Q1. What are the different binary tree traversal mechanisms? A1. Traversing a tree means visiting all the nodes of a tree in order. … Read more ›...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs04: Tree – Get root to leaf max sum in Java example
Q. Write code to traverse a tree and get the largest “root-to-leaf sum”? A “root-to-leaf sum” is a sum of the node values in a root-to-leaf path. … Read more...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs05: Is it a valid binary search tree (BST) ?
Q. Write code test if a given tree is a binary search tree (i.e. BST)? A. A binary search tree (BST) is a binary tree where each node satisfies the...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs06: Binary Tree – Sum Levels Java Example
Q. Write code to traverse a tree and return the sum of the values (Node.getValue()) of all nodes at the level N in the binary tree? … Read more ›...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs06: Binary Tree – Get root to leaf max sum in Java example
Q. Write code to traverse a binary tree and get the largest “root-to-leaf sum”? A “root-to-leaf sum” is a sum of the node values in a root-to-leaf path. … Read...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs07: Tree – Sum Levels Java example
Q. Write code to traverse a tree and return the sum of the values (Node.getValue()) of all nodes at the level N in the tree? A. … Read more ›...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs08: Part-1: Basic Java Tree structure interview questions and coding questions
Java does not have a Tree class but you can define one. In my 10+ years as a Java developer, I have rarely used a Tree structure, … Read more...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs09: Part 2: Java Tree structure interview questions and coding questions
In the previous post entitled Java Tree structure interview questions and coding questions — Part 1, we looked at a very simple Tree structure. In this example, … Read more...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs10: Part-3: Java Tree structure interview and coding questions
This is an extension to Java Tree structure interview and coding questions — Part 2, and adds functional programming and recursion. Step 1: The Tree interface with get( ) method that...
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Login Register 100+ Free Java interview FAQs 100+ Free Big Data interview FAQs11: Part 4: Java Tree structure interview and coding questions
This is an extension to Java Tree structure interview questions and coding questions — Part 3 where recursion was used for FlattenTree interface. Let’s use iteration here. … Read more ›...
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