Software Support Engineer III

You are given a string 'STR'. The string contains [a-z] [A-Z] [0-9] [special characters]. You have to find the reverse of the string.

For example:

 If the given string is: STR = "abcde". You have to print the string "edcba".

follow up:

Try to solve the problem in O(1) space complexity. 

Ninja is playing with numbers but hates when he gets duplicate numbers. Ninja is provided an array, and he wants to remove all duplicate elements and return the array, but he has to maintain the order in which the elements were supplied to him.

You are given an array of positive integers representing the heights of a row of buildings. You are observing these buildings from the far right side (i.e., from a position at infinity on the positive x-axis).

A building is considered to have a "sunset view" if no building to its right is taller than or equal to it.

Your task is to find and return a list of the heights of all buildings that have a sunset view, in the order they appear from left to right in the original array.

Given an unsorted array of integers, you have to move the array elements in a way such that all the zeroes are transferred to the end, and all the non-zero elements are moved to the front. The non-zero elements must be ordered in their order of appearance.

For example, if the input array is: [0, 1, -2, 3, 4, 0, 5, -27, 9, 0], then the output array must be:

[1, -2, 3, 4, 5, -27, 9, 0, 0, 0].

Expected Complexity: Try doing it in O(n) time complexity and O(1) space complexity. Here, ‘n’ is the size of the array.

Write a shell script to find all words starting with "process" in a file at a Unix path, print those lines, and save them to an output file.

Write a shell script to find all 10-digit mobile numbers in a file.

Explain a few Linux commands that you know.

Given a string input of length n, find the length of the longest substring without repeating characters i.e return a substring that does not have any repeating characters.

Substring is the continuous sub-part of the string formed by removing zero or more characters from both ends.

• Think of a scenario when you went above and beyond for a customer.
• Give an example from your work where you had a major impact.

This round was called the Bar Raiser. Questions were based on Amazon's Leadership Principles.

• Give a scenario where you had a disagreement with your manager.
• Describe a difficult customer interaction and explain why it was challenging.
• Provide a situation where you had to make a quick decision and what the outcome was.