Oracle Mts1 Interview Questions, Process, and Tips

Round duration - 107 minutes
Round difficulty - Medium

The test was active on (Oct 1, 2020) from 7:00 PM to 09:00 PM. The duration of the test is 107 minutes.
The candidate should have completed the test by 9:45 PM.

The camera and microphone was on all the time. There was time alotted for each section. After completing one section you cannot switch to the previous section. If you go off the camera you will get a warning.
The test contained several sections and all questions were MCQs. The sections were Coding ability, Computer Science theory, Advanced data structures like AVL Tree, Verbal and Quantitative ability, etc

Q1. 
Preorder Traversal to BST Problem Statement
Given an array or list PREORDER representing the preorder traversal of a Binary Search Tree (BST) with N nodes, construct the BST which matches the given preord...read more
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Round duration - 30 minutes
Round difficulty - Medium

The Round started at 10:15 am and ended at 10:45 am approx. We waited in breakout room in zoom and when the interviewer was free we entered in the zoom call with the interviewer both camera and microphone was on. The interviewer was really supportive and hepled me in thinking different approches of a problem.

Q1. 
Check if a Number is Binary
Determine if a given string of integers bin represents a valid binary number. Return 'true' if the string represents a valid binary number, otherwise return 'false'. A binary n...read more
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Q2. 
Rearrange The Array Problem Statement
You are given an array/list 'NUM' of integers. Rearrange the elements of 'NUM' such that no two adjacent elements are the same in the rearranged array.
Example:
Inpu...read more
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Q3. 
Number and Digits Problem Statement
You are provided with a positive integer N. Your task is to identify all numbers such that the sum of the number and its digits equals N.
Example:
Input:
N = 21
Out...read more
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Q4. 
Reverse a String Problem Statement
Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string.
Input:
The input starts with a single i...read more
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Q5. What will be the result when adding two binary numbers in a 64-bit and a 32-bit operating system?
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Round duration - 30 minutes
Round difficulty - Medium

It took place at 11:30am(approx) and last for about 30 minutes
We waited in breakout room in zoom and when the interviewer was free we entered in the zoom call with the interviewer. Both camera and microphone was on.

Round duration - 30 minutes
Round difficulty - Easy

It took place around 1:30pm and last for 30 minutes. We waited in breakout room in zoom and when the interviewer was free we entered in the zoom call with the interviewer. Both camera and microphone was on.