Thales interview experience Real time questions & tips from candidates to crack your interview
SDE - 2
Thales
1 rounds | 3 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 3 Months
Topics: Data structure and algorithm, Java basics, OOPs concept, Design Patterns, Spring
Tip 1 : Practice competitive programming, attempt 2 questions daily
Tip 2 : never leave the basics of your coding skills behind
Tip 3 : should know in-out of your projects
Application process
Where: Referral
Eligibility: No
Tip 1 : never lie on your resume
Tip 2 : should know in & out of your listed projects
Interview rounds
01
Round
Medium
Video Call
Duration45 minutes
Interview date25 Jul 2020
Coding problem3
Interviewer had good knowledge asked many questions.
1. Two Sum
Easy
10m average time
90% success
0/40
Asked in companies
You are given an array of integers 'ARR' of length 'N' and an integer Target. Your task is to return all pairs of elements such that they add up to Target.
Note:
We cannot use the element at a given index twice.
Follow Up:
Try to do this problem in O(N) time complexity.
2. System Design Question
Data base design for book my show
Problem approach
Tip 1 : get your doubts clear before attempting
Tip 2 : keep the round interactive.
3. Convert binary tree to mirror tree
Easy
15m average time
85% success
0/40
Asked in companies
Given a binary tree, convert this binary tree into its mirror tree.
A binary tree is a tree in which each parent node has at most two children.
Mirror of a Tree: Mirror of a Binary Tree T is another Binary Tree M(T) with left and right children of all non-leaf nodes interchanged.
Note:
1. Make in-place changes, that is, modify the nodes given a binary tree to get the required mirror tree.
Problem approach
I first clarified the doubts since the question was too vague in start.
Then I told that this problem can be solved with iterative or recursive approach, Interviewer told me to go ahead and code the recursive one.
We discussed time complexity.
Then I implemented iterative one too.
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is the purpose of the return keyword?
Choose another skill to practice
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