Amazon Interview Questions and Answers

Question 1

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Q1. Find the maximum element in the array after update operations.

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Question 2

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Q2. Java Question

Why do we need to override equals and hashcode methods in Java?

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Question 3

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Q3. OS Question

Print even and odd numbers in increasing order using two threads in Java

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Question 4

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Q4. Java Question

Internal working of hash map in Java

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Question 5

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Q5. Java Question

Internal working of CopyOnWrite ArrayList ?

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Question 6

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Q6. Java Question

Differences between Synchronized Collection and Concurrent Collection in Java

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Question 7

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Q7. Reverse string with spaces but keep the space position intact

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Answer

Reverse a string while keeping the position of spaces intact

Split the string into an array of characters
Iterate through the array and reverse the characters while keeping track of space positions
Join the array back into a string