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Common Programming Interview Questions

There are many computer science graduates and programmers applying for programming, coding and software development roles at startups such as Uber and Netflix; large organizations such as Amazon, Microsoft, and Google; and service-based companies such as Infosys or Luxoft, but many of them have no idea what kind of common programming interview questions to expect when you apply for a job with these co-workers.

Here we are talking about some common programming interview questions. 

Top Programming Interview Questions

  1. How to find the missing number in a given integer array of 1 to 100?
  2. How do you find the duplicate number on a given integer array?
  3. What is the difference between String, StringBuilder, and StringBuffer in Java?
  4. How to find all pairs of an integer array whose sum is equal to a given number?
  5. How do you find duplicate numbers in an array if it contains multiple duplicates?
  6. Why Char array is preferred over String for storing passwords?
  7. How does the quicksort algorithm sort an integer set in place?
  8. How do you remove duplicates from an array in place?
  9. In an array 1-100 exactly one number is duplicate how do you find it?
  10. How do you delete duplicates from an array without using any library?
  11. Design an algorithm to find the frequency of occurrence of a word in an article?
  12. How do you check if a given linked list contains a cycle?
  13. Difference between a linked list and an array data structure?
  14. How do you reverse a linked list?
  15. How do you reverse a singly linked list without recursion?
  16. Write code to print InOrder traversal of a tree?
  17. How do you find the length of a singly linked list?
  18. How can you find the third node in a different linked list from the end?
  19. Write a program to find prime factors of an integer?
  20. Write a program to implement a blocking queue in Java?

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