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Associate applications developer Interview Questions

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ServiceNow
Associate Applications Developer was asked...24 August 2017

Reverse a stack wothout using any other data structure

3 Answers

If a stack is implemented using linked list we can keep track of head and tail nodea and an auxiliary node that srores tail. Move all the nodes 4m head to tail until we visit the tail that we stored in auxiliary node. Note that while replacing the nodes put them after the initial tail node but not after the actual tail Less

If a stack is implemented using linked list we can keep track of head and tail nodea and an auxiliary node that srores tail. Move all the nodes 4m head to tail until we visit the tail that we stored in auxiliary node. Note that while replacing the nodes put them after the initial tail node but not after the actual tail Less

Using another stack along with the first stack effectively reverses the first stack ,pop and peek are exposed on second stack while push is overridden so everytime a push is done on first stack it's popped and pushed on to second stack,. Long story short - reverse of a stack is queue and we can implement a queue with 2 stacks without any other data structure apart from stack Less

Union Pacific

String manipulation in a language that was described by the test

2 Answers

Followed the layout of the language to perform the basic algorithm

Very interested in learning or doing whatever it takes to be an intern with the railroad no matter what what I have always wanted a job there and I'm older now have lots of skills and I am really interested in working for the railroad for the rest of my life Less

J.P. Morgan

Calculate the average salary of employees based on their teams and then get the Nth largest average from a table using sql

2 Answers

well i was able to do grouping and get the first two and explained that can be extrapolated. not very optimal solution. Less

-- mysql SELECT sal FROM (SELECT dept_no, AVG(salary) AS sal FROM salaries INNER JOIN dept_emp USING (emp_no) GROUP BY dept_no) t1 limit 4,1 Less

Accenture

Tell me the basic component of Object Orient Programming.

2 Answers

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Object

AT&T

1. Write a code that will take in a string and count the number of characters in the string. 2. Write a code that takes in two different arrays, compares them and ouputs whatever is not common in the 2 arrays.

2 Answers

Tried my best, mostly tried to explain how I would go about designing the function Less

public void comapreArray(int[] first, int[] second){ int[] select; if (first.length > second.length){ select = first; } else { select = second; second = first; } for(int index=0; index < select.length; index++){ if (select[index] != second[index]){ System.out.println(first[index]+" "+second[index]); } } } Less

AT&T

Would you use an array or linked list for fast retrieval?

2 Answers

Array if index is know because it will cost O(1). However, if you have to retrieve range of elements then linkedlist using iterator which will give amortized time of O(1). Less

Array

Jio

I have been asked to write down a program for linked list

2 Answers

Yes

Management

Workday

Why do you want to apply for the application developer position as opposed to the traditional software development position?

2 Answers

Workday has both application and software developer positions, but I wanted to focus on the application because I like the idea of solving the business problems. Also, in college a lot of projects were based on developing a more basic version of some software that already exists. The idea of just using something that I know works, and I can build on top of was something that was intriguing. Less

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CSC

To design a virtual database for a virtual super market inventory tracking and monitoring.

1 Answers

They were interested in looking the approach rather than the actual answer. In any such interviews, I believe the approach and the way one acknowledges the problem and conveys the thought process matters more than the actual result. Less

Accenture

Introduce Yourself.

1 Answers

My answer was fairly clear, uncomplicated and truthful. It did not involve too many trivial facts about me, but just a technical and a relevant extracurricular side of me. Less

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