Oracle interview experience Real time questions & tips from candidates to crack your interview

SDE - 1

Oracle
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2 rounds | 2 Coding problems

Interview preparation journey

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Preparation
Duration: 1 Month
Topics: DS, Algorithm, Java, Database, System Design
Tip
Tip

Tip 1 : Prepare easy and medium ds algo questions
Tip 2 : Prepare Java and my sql database
Tip 3 : Prepare System Design

Application process
Where: Other
Eligibility: No Criteria
Resume Tip
Resume tip

Tip 1 : Tag you links of LinkedIn profile and your competitive coding profile in your resume
Tip 2 : Mention your all projects

Interview rounds

01
Round
Medium
Video Call
Duration60 minutes
Interview date9 Apr 2022
Coding problem1

Interviewer was very friendly and of very good nature, the environment she set before starting the interview is awesome and also helps me in guiding if i miss anything

1. Missing Number

Moderate
30m average time
70% success
0/80
Asked in companies
SamsungFacebookApple

You are given an array/list ‘BINARYNUMS’ that consists of ‘N’ distinct strings which represent all integers from 0 to N in binary representation except one integer. This integer between 0 to ‘N’ whose binary representation is not present in list ‘BINARYNUMS’ is called ‘Missing Integer’.

Your task is to find the binary representation of that ‘Missing Integer’. You should return a string that represents this ‘Missing Integer’ in binary without leading zeros.

Note

1. There will be no leading zeros in any string in the list ‘BINARYNUMS’.

Example:

Consider N = 5 and the list ‘binaryNums’=  [“0”, “01”, “010”, “100”, “101”].  This list consists of the binary representation of numbers [0, 1, 2, 4, 5]. Clearly, the missing number is 3 and its binary representation will be “11”. So you should return string “11”.
Problem approach

Step 1 : sum all the elements present in array
Step 2 : find the expected sum of natural numbers
Step 3 : the difference of expected sum and actual sum is the missing natural number

Try solving now
02
Round
Hard
Video Call
Duration60 Minutes
Interview date9 Apr 2022
Coding problem1

Interviewer was not good in nature and just want to wrap the interview as early as he can, he give me two problems and then one system design

1. System Design Question

Design a traffic signal system

Problem approach

Tip 1: Prepare for some system design problems
Tip 2: prepare data structures accordingly 
Tip 3: get deeper understanding of database structure

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

How do you remove whitespace from the start of a string?

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