Apple Interview Questions: Coding Round

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Amazon Interview Questions: Coding Round

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In such businesses, you have your module entirely and you need to think of the plan of this piece of software you'll be writing to fix a problem. The coding part is merely the implementation and approximately takes 20-30percent of the time allocated to a job. The majority of the time goes into designing items with the very best and best algorithms to save on business's resources(servers, computation power etc). This is the principal reason interviews in these businesses are focused on algorithms since they want people who can think out of the box to design algorithms that may save the company thousands of dollars.

There's not any other alternative for this.

Concerning the coding component throughout the interviews, after the algorithm is discussed for an issue, the candidate is expected to write clear code that's syntactically and semantically correct. So that must be practised broadly

What to expect at Amazon Interview?

  1. Coding interviews concentrate on fundamental problem solving and information structures. The less experienced you are, the greater the number of programming rounds for you.
  2. 1 Layout interview which involves coming up with higher-level design architectures for real-life products in addition to OOPS based design of elements. This round may be scrapped for you if you're interviewing for an entry-level software engineering function. In-depth knowledge of prior technology used is paramount here.
  3. An optional bar raiser around that's a mix of all the above. The idea is here to judge if you're technically better than an ordinary person in a specific Amazon team. 
Material from the programming section of Amazon is fairly comprehensive. For the reference, the section below has a number of the questions that are often asked in Amazon's Interview. Be certain that you try and solve the majority of them.

Here are some examples of questions which have been asked in the Coding round:

  • Given an array, find the maximum j – i such that arr[j] > arr[i]
  • Clone a linked list with next and random pointer
  • Remove duplicates from the string in place in O(n).
  • Connect nodes on the same level in a binary tree.
  • Reverse a linked list in groups of size n
  • Implement hashmap on your own. Write good hashing function for the string.
  • You have given a tree with edge weights, find any path in the tree with a maximum sum of edges.
  • Given a binary tree, find the maximum path sum.
  • Merge k sorted arrays.
  • You have given a dictionary of 50,000 words. Given a phrase without spaces, add spaces to make it a proper sentence.
  • Given a list, rotate the list to the right by k places, where k is non-negative.
  • Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.
  • Find the longest increasing subsequence of a given sequence/array.