Aztec Recycling Hub Interview Questions and Answers

Find the 3rd largest used character in a string.

• Create a frequency map of characters in the string

• Sort the map by frequency in descending order

• Return the third character from the map

Find the error in the code

• Need to specify the error or provide the code

• Without context, it's impossible to find the error

Component lifecycle in React is a series of methods that are invoked at different stages of a component's existence.

• Mounting: constructor, render, componentDidMount

• Updating: render, componentDidUpdate

• Unmounting: componentWillUnmount

• Error Handling: componentDidCatch

Clean code is essential for maintainability, readability, and scalability of software.

• Clean code follows consistent naming conventions.

• Clean code is well-organized and easy to understand.

• Clean code minimizes duplication and follows the DRY (Don't Repeat Yourself) principle.

ArrayList is a class that implements List interface. List is an interface that defines certain methods.

• ArrayList is a resizable array implementation of List interface.

• List is an interface that defines certain methods like add(), remove(), get(), etc.

• ArrayList can store duplicate elements and maintains insertion order.

• List can be implemented by other classes like LinkedList, Vector, etc.

Convert Roman numerals to integers using a code snippet.

• Create a dictionary to map Roman numerals to integers

• Iterate through the input string from right to left

• If the current numeral is smaller than the next numeral, subtract its value from the total

• Otherwise, add its value to the total

IT field offers more opportunities and growth potential compared to ECE.

• IT field is constantly evolving and offers a wide range of career options

• IT professionals are in high demand across industries

• IT field offers better salary and growth prospects compared to ECE

• ECE field is limited to certain industries like electronics and telecommunications

• IT field has more scope for innovation and creativity