Interview Questions and Answers for 'L' | Search Interview Question

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Q631. 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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Q632. Are you involved in architecture and design ?

General

^{This question was recently asked at 'Western Governors University (WGU)'.This question is still unanswered. Can you please provide an answer.}

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Q633. Which development methodology do you use ?

General

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

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Q634. 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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Q635. What was the most complex problem you faced in your career and how you fixed it ?

General

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Q636. What is the difference between round and scale method of BigDecimal ?

Core Java

Ans. Round method would round it to integer places irrespective of if it's decimal places or not whereas scale would only round the decimal places.

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Q637. Have you ever faced problems with rounding decimal places and what were the reasons ?

Core Java

Ans. 1. The problem with double (x*100)/100 doesn't return exact x but few fractions lesser than x and then if you are using floor rounding , it makes a big difference

2. Rounding only after getting a result vs rounding each outcome of 2 operand make difference

3. Usage of inappropriate Rounding mode and Rounding scale.

4. Results with double and BigDecimal

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Q638. 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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Q639. What is the structure of your team ?

^{This question was recently asked at 'FlatIron,Western Governors University (WGU)'.This question is still unanswered. Can you please provide an answer.}

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Q640. Can you explain the recent bug in your project and how you fixed it.

General

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

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Q641. Given a linked list with 0 to n node references , Flaten the Linked list

Algorithm

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Q642. 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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Q643. 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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Q644. 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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Q645. Make "I Know Java" as "I Java Know" without using any inbuilt functions.

Core Java

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

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Q646. 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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Q647. Find unique values between two arrays using single for loop ?

Core Java

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

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Q648. Find Intersection/union between two arrays.

Core Java

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Q649. 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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Q650. Do you like your work in current project ?

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

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Q651. 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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Q652. Write a program that identifies numbers in a list that are palindrome and perfect square ?

Core Java

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

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Q653. 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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Q654. 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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Q655. Can you explain JSON specification ?

JSON

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Q656. Have you ever worked with single sign on ?

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

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Q657. Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ?

Ans. In two different situations I used UTF-8 and Base 64 encodings.

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Q658. Have you ever encoded the response before sending it back ?

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

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Q659. What is your role in current project ?

General

Ans. Possible Answer - Java Developer

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Q660. What are the different delivery policies in Apache Kafka ?

Apache Kafka

Ans. Exactly once , At least once , At max once

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