How are duplicates removed from an array without using any library? ( solution).How do you reverse an array in place in Java? ( solution).How do you remove duplicates from an array in place? ( solution).How is an integer array sorted in place using the quicksort algorithm? ( solution).How are duplicates removed from a given array in Java? ( solution).How do you find duplicate numbers in an array if it contains multiple duplicates? ( solution).How do you find all pairs of an integer array whose sum is equal to a given number? ( solution).How do you find the largest and smallest number in an unsorted integer array? ( solution).How do you find the duplicate number on a given integer array? ( solution).How do you find the missing number in a given integer array of 1 to 100? ( solution).Here are some of the popular array-based coding interview questions for you to practice: The key to solving array-based questions is having a good knowledge of the array data structure as well as basic programming constructs such as loops, recursion, and fundamental operators. In order to create a shorter or longer array, you need to create a new array and copy all elements from old to new. The key benefit of an array data structure is that it offers fast O(1) search if you know the index, but adding and removing an element from an array is slow because you cannot change the size of the array once it’s created. reversing an array, sorting the array, or searching elements on the array.
It is also one of the darling topics of interviewers and you will hear a lot of questions about arrays in any coding interview, e.g. Array Coding Interview QuestionsĪn array is the most fundamental data structure, which stores elements at a contiguous memory location. You can also google to find answers to most of the questions, as they are very common.
I have also shared solutions for most of the questions in Java but if you are a Python developer, you can check the logic and implementation in Python. Without any further ado, here is my list of some of the most frequently asked coding interview questions from programming job interviews. Top 50 Algorithms and Programming Interview Questions In that case, you should take a good course like Algorithms and Data Structures Part 1 and 2 By Robert Horvick to refresh your DS and algorithms skills.
Once you have gone through these questions, you should feel confident enough to attend any interview.īy the way, there is no point in attempting these questions if you don’t have sufficient knowledge of essential Data Structure and Algorithms or you have not touched them for ages. It’s not guaranteed that you will be asked these coding or data structure and algorithmic questions, but they will give you enough of an idea of the kinds of questions you can expect in a real programming job interview. string algorithms, sorting algorithms like quicksort or radix sort, and other miscellaneous ones), and that’s what you will find in this article. The topic areas I’ve seen most often in interviews are arrays, linked lists, strings, binary trees, as well as questions from algorithms (e.g. I think it’s helpful to divide coding interview questions into different topic areas. In this article, I’ll share some frequently asked algorithms and data structure interview questions from different interviews for programmers at different levels of experience, from people who have just graduated from college to programmers with one to two years of experience.Ĭoding interviews are comprised mainly of data structure and algorithm-based questions as well as some of the logical questions such as, 'How do you swap two integers without using a temporary variable?' But many of them have no idea of what kind of programming interview questions to expect when you’re applying for a job with these companies.
JAVA BASIC DATA STRUCTURES REVIEW SOFTWARE
There are a lot of computer science graduates and programmers applying for programming, coding, and software development roles at companies like Uber and Netflix big organizations like Amazon, Microsoft, and Google and service-based companies like Infosys or Luxsoft.
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