Write functions that convert a string to uppercase or lowercase without assuming anything about the alphabet or character set it uses (for instance, do not assume it is in English or ASCII).
Intern Software Engineer Interview Questions
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Write a function that takes in an integer array and returns a boolean, whether or not the array has duplicates in it.
What are the technologies you have worked with?
Implement a function to solve an string given in reverse polish notation.
The interview problems were fairly straightforward. One was given 2 Nodes in a binary tree, find the closest ancestor and the other one was given a 2D array of people who follow one another, determine who's an influencer(followed by everyone, follows no one). Example: If A[i][j] is true, then person i follows person j.
Some histogram question on leetcode. Medium level.
Given an array, and another key, find two numbers in the array that add upto the key.
Perform binary search on a sorted array, of which you don't know the size.
An array contains alphabets, some of which may have duplicates. Find the number of duplicates.
How does Java Garbage Collection work? How would you implement garbage collection?
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