Amazon Interview Questions Python

Reverse Words in a Sentence

Reverse the order of words in a given sentence (an array of characters). %0 node_1 “Hello World” node_2 “World Hello” node_1->node_2

Runtime Complexity: Linear, O(n)O(n)O(n)

Memory Complexity: Constant, O(1)O(1)O(1)

The steps to solve this problem are simpler than they seem:

  • Reverse the string.
  • Traverse the string and reverse each word in place.
  • How many ways can you make change with coins and a total amount

    Suppose we have coin denominations of [1, 2, 5] and the total amount is 7. We can make changes in the following 6 ways:

    Runtime Complexity: Quadratic, O(m∗n)O(m*n)O(m∗n)

    Memory Complexity: Linear, O(n)O(n)O(n)

    To solve this problem, we’ll keep an array of size amount + 1. One additional space is reserved because we also want to store the solution for the 0 amount.

    There is only one way you can make a change of 0, i.e., select no coin so we’ll initialize solution[0] = 1. We’ll solve the problem for each amount, denomination to amount, using coins up to a denomination, den.

    The results of different denominations should be stored in the array solution. The solution for amount x using a denomination den will then be:

    We’ll repeat this process for all the denominations, and at the last element of the solution array, we will have the solution.

    Given a set of ‘n’ elements, find their Kth permutation. Consider the following set of elements: %0 node_1 1 node_2 2 node_3 3

    All permutations of the above elements are (with ordering):

    Here we need to find the Kth permutation.

    Runtime Complexity: Linear, O(n)O(n)O(n)

    Memory Complexity: Linear, O(n)O(n)O(n)

    Here is the algorithm that we will follow:

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    Do you know that only about 2% of those who apply at Amazon get through? The tech giant has a pretty rigorous hiring process. The recruiters carefully select all the Amazon coding interview questions to test the overall abilities of the applicants.Â

    To face the Amazon coding challenge questions, you’ll need a lot of practice, guidance, and the correct strategy. As the company receives thousands of resumes every year, you’ll need to ace your tech interview to get through.

    If you intend to acing Amazon’s coding interview, you must adopt the right strategy. Without that, beating the stiff competition is an uphill climb.Â

    In this article, we’ll look at the type of Amazon coding interview questions you can expect. These are the things we will discuss:

  • The Complete Amazon Interview Process
  • Different Levels at Amazon
  • Amazon Coding Interview Questions
  • Scoring and Evaluating System at Amazon Interviews
  • FAQs on Amazon Coding Interview Questions
  • Before we get to Amazon coding interview questions, we’ll begin with everything you need to know about how Amazon conducts its interviews and what they’re looking for. Let’s jump right in!

    Given the plethora of services that Amazon offers, it is pretty obvious that a lot of people want to join Amazon and be part of its evergreen culture. But what really is the secret sauce to Amazon’s humongous success? Well, if you ask this question to any of the employees at Amazon, we are pretty sure that everyone would unanimously say: The Leadership Principles of Amazon

    Amazon is renowned for its huge disruption of industries through technological innovation and mass scale. Being the worlds largest online marketplace, AI assistant provider, and cloud computing platform, Amazon has a workforce of over six lakh employees, out of which over fifty thousand are Indians. It is the largest Internet company by revenue in the world right now and the second-largest private employer in the United States. Because of this, Amazon has the highest global brand valuation.

    Earths most Customer Centric company, Amazon was founded by Jeff Bezos from his garage in Bellevue, Washington on July 5, 1994. Amazon is an American multinational technology company whose focus is on a large number of fields, for instance, E-Commerce, Cloud Computing, Artificial Intelligence, Digital Streaming, etcetera. It is considered to be one of the Big Five companies in the United States Information Technology industry, along with Google, Apple, Microsoft, and Facebook.

    Python: Amazon Interview Question

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