Interview Questions and Answers for 'T' | Search Interview Question

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Q781. What are you using AWS lambda for ?

Amazon Web Services (AWS)

Ans. We are using it for computation (EC2) , Storage (S3) and Database (RDS)

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Q782. Are you involved in architecture and design ?

General

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Q783. Which development methodology do you use ?

General

Ans. http://www.itinfo.am/eng/software-development-methodologies/

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Q784. Which spring boot version are you working with ?

Spring Boot

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Q785. What is the "multiplicative congruence" method for determining where an element belongs in a hash table ?

Data Structure

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Q786. Describe how a queue is usually created using sequential allocation.

Data Structure

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Q787. If a stack is implemented using linkedlist, which end (head or tail) should represent the top ?

Data Structure

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Q788. If a stack is implemented using an array, which end (head or tail) should represent the top ?

Data Structure

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Q789. Given a comma separated string that signifies the current position in 4 * 4 tic tac toes game, write a program that gives the result of the game - If anyone win and if yes then who and if the game is still open.

For example - x,0,x,x,x,0,0,0,0,x,0,x means that 00 index has x, 01 has 0 and so on with x(3,3) has last element x

Design

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Q790. Math.round method rounds the decimal to an integer by stripping off the decimal places. How can we use the same method to keep only 2 decimal places

For example -

Math.round(12.3456) will return 12. What should we do to get 12.34 without using any other class or method.

Core Java

Ans. We can multiply the value by 100 and then use Math.round on that and then divide the result by 100

For example -

(Math.round(12.3456 * 100)) / 100

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Q791. What is the structure of your team ?

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Q792. Can you explain the recent bug in your project and how you fixed it.

General

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Q793. Given a linked list with 0 to n node references , Flaten the Linked list

Algorithm

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Q794. Given the Phone keys mapping between numbers and characters as following

1 - a,b,c
2 - d,e,f

and so on, Write a Program that takes the integer as input and then print all possible combinations of characters matching those integers.

For example - 12 should return

ad,ae,af,bd,be,bf,cd,ce,cf

Design

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Q795. What is ViewResolver in Spring MVC ?

Spring

Ans. View resolver is used to get view name from Controller and resolve the next view page

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Q796. What is the biggest learning in any of your previous jobs ?

^{This question was recently asked at 'iOPEX Technologies'.This question is still unanswered. Can you please provide an answer.}

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Q797. Make "I Know Java" as "I Java Know" without using any inbuilt functions.

Core Java

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Q798. Find Fibonacci first n numbers using recursion ?

Core Java

Ans. public int fibonacci(int n) {
if(n == 0)
return 0;
else
if(n == 1)
return 1;
else
return fibonacci(n - 1) fibonacci(n - 2);
}

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Q799. Find unique values between two arrays using single for loop ?

Core Java

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Q800. Find Intersection/union between two arrays.

Core Java

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Q801. What is garbage collection ?

Core Java

Ans. The garbage collection is a facility wherein a program runs on the Java Virtual Machine which gets rid of objects, which are not being used by a Java application anymore. It is a form of automatic memory management and recollection.

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Q802. Which spring boot version are you working with ?

Spring Boot

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Q803. Do you like your work in current project ?

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Q804. Why do you want to leave your current job ?

General

Ans. The most effective and acceptable reasons for leaving your current job should be positive e.g. moving forward in your life or career

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Q805. When to use List, Set and Map in Java

Core Java

Ans. I. If we want a Collection that does not store duplicate values, then we use a Set based collection.

II. If we want to frequently access elements operations based on an index value then we use a List based collection. E.g. ArrayList

III. If we want to maintain the insertion order of elements in a collection then we use a List based collection.

IV. For fast search operation based on a key, value pair, we use a HashMap based collection.

V. If we want to maintain the elements in a sorted order, then we use a TreeSet based collection.

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Q806. Explain Java collections

Core Java

Ans. Collection is a container which is used to store and manipulate the group of objects

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Q807. Write a program that identifies numbers in a list that are palindrome and perfect square ?

Core Java

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Q808. Can you explain filter and collectors in java 8 ?

Core Java

Ans. Filters are used to filter object in stream on certain criteria.
Collector is used to collect outcome of the stream. Collector is a terminal operation.
List numbers = List.of(1,2,3,4,5,6,7);
List evenNumbers = numbers.stream().filter(n -> n%2==0).collect(Collectors.toList());
The above code will filter out odd numbers and return the list of even number.

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Q809. Can you explain filter and collectors in java 8 ?

Core Java

Ans. Filters are used to filter object in stream on certail criteria. And collector is used to collect outcome of the stream. Collector is a terminal operation.
List numbers = List.of(1,2,3,4,5,6,7);
List evenNumbers = numbers.stream().filter(n -> n%2==0).collect(Collectors.toList());
The above code will filter out odd numbers and return the list of even number.

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Q810. Have you ever built an automation suite to test a cron job or command line application ?

Testing

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