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Interview Questions and Answers for 'Newgen' - 3 question(s) found - Order By Newest

 Q1. What is a double ended queue?Core Java
 This question was recently asked at 'newGen'.This question is still unanswered. Can you please provide an answer.


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Related Questions

  What is a BlockingQueue?
  Which of the following doesn't extend Collection interface ?
 If you need to consume messages from the queue faster, which approach will you recommend - batching or concurrency ?
  What is ConcurrentLinkedDeque ?
  Name few classes that implement Queue interface ?
  Name few Queue classes and interfaces ?
  What is Apache Kafka ?
  What is a broker in Apache Kafka ?
  What is a Topic in Apache Kafka ?
  Have you used Kafka in your project ? If Yes, for what ?


 Q2. Write a program for binary tree ?Data Structure
Ans. public class BinarySearchTree {
//Represent the node of binary tree
public static class Node {
int data;
Node left;
Node right;
public Node(int data) {
//Assign data to the new node, set left and right children to null

this.data = data;
this.left = null;
this.right = null;
}
}
//Represent the root of binary tree

public Node root;
public BinarySearchTree() {
root = null;
}

//factorial() will calculate the factorial of given number

public int factorial(int num) {
int fact = 1;
if (num == 0) return 1;
else {
while (num > 1) {
fact = fact * num;
num--;
}
return fact;
}
}

//numOfBST() will calculate the total number of possible BST by calculating Catalan Number for given key

public int numOfBST(int key) {
int catalanNumber = factorial(2 * key) / (factorial(key 1) * factorial(key));
return catalanNumber;
}
public static void main(String[] args) {
BinarySearchTree bt = new BinarySearchTree();

//Display total number of possible binary search tree with key 5

System.out.println("Total number of possible Binary Search Trees with given key: "
bt.numOfBST(5));
}
}

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Related Questions

 What is a binary tree ?
 Write code for Binary tree traversal ?
 Flatten a Binary Tree to Linked List
 Write code to check if a Binary tree is symmetrical
 Write program to balance a binary tree
 Given a sorted array, write an algorithm to create a binary tree.
 Write a Program to find depth of node binary tree ?


 Q3. What is difference between url based and component based web application ?J2EE
 This question was recently asked at 'Newgen technologies'.This question is still unanswered. Can you please provide an answer.


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Related Questions

  Difference between == and .equals() ?
  Why is String immutable in Java ?
  Explain the scenerios to choose between String , StringBuilder and StringBuffer ?

or

What is the difference between String , StringBuilder and StringBuffer ?
  What are the difference between composition and inheritance in Java?
 Explain OOPs

or

Explain OOPs Principles

or

Explain OOPs Concepts

or

Explain OOPs features

or

Tell me something about OOPs
  What is a Lambda Expression ? What's its use ?
  Does garbage collection guarantee that a program will not run out of memory?
  Why Char array is preferred over String for storing password?
  What are different ways to create String Object? Explain.
  What is the difference between final, finally and finalize() ?



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