LTI - Larsen & Toubro Infotech interview experience Real time questions & tips from candidates to crack your interview

Data Engineering Analyst

LTI - Larsen & Toubro Infotech
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3 rounds | 3 Coding problems

Interview preparation journey

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Preparation
Duration: 2 months
Topics: 1. Data Structures 2. Database Management System 3. OOP 4. Operating System 5. Python Programming
Tip
Tip

Tip 1 : Participate in programming competitions and practice at least 100 questions.
Tip 2 : Get an internship experience or take part in hackathons.
Tip 3 : Be comfortable with the OOP concept and fundamental programming principles.

Application process
Where: Campus
Eligibility: 6.5 CGPA, 60% in 10th and 12th.
Resume Tip
Resume tip

Tip 1 : Keep your resume concise.
Tip 2 : Try mentioning all your skills on the resume.
Tip 3 : Don't forget to add your best projects and certificates.

Interview rounds

01
Round
Medium
Online Coding Test
Duration150 Minutes
Interview date1 Oct 2020
Coding problem2

1. Largest subarray with equal number of 0s and 1s

Moderate
10m average time
85% success
0/80
Asked in companies
OraclePhonePeSAP Labs

You are given an array consisting of 0s and 1s. You need to find the length of the largest subarray with an equal number of 0s and 1s.

For example:

If the given array is: [0, 0, 1, 0, 1] The largest subarray would be: [0, 1, 0, 1] (last 4 elements) having length 4.
Problem approach

An easy problem is solved by changing the counter to 1 every time 1 comes after 0 or vice versa.
The maximum value is to be stored at the time of each swap.

Try solving now

2. Median of two sorted arrays

Hard
25m average time
65% success
0/120
Asked in companies
GrabMicrosoftWells Fargo

Given two sorted arrays 'a' and 'b' of size 'n' and 'm' respectively.


Find the median of the two sorted arrays.


Median is defined as the middle value of a sorted list of numbers. In case the length of list is even, median is the average of the two middle elements.


The expected time complexity is O(min(logn, logm)), where 'n' and 'm' are the sizes of arrays 'a' and 'b', respectively, and the expected space complexity is O(1).


Example:
Input: 'a' = [2, 4, 6] and 'b' = [1, 3, 5]

Output: 3.5

Explanation: The array after merging 'a' and 'b' will be { 1, 2, 3, 4, 5, 6 }. Here two medians are 3 and 4. So the median will be the average of 3 and 4, which is 3.5.
Problem approach

The problem came with getting the test cases done within the time limit which was O(log(N1+N2)).
I solved the problem by using Binary Search implementation.

Try solving now
02
Round
Easy
Video Call
Duration40 Minutes
Interview date8 Oct 2020
Coding problem0

Around 2:30
Questions on the OOP concepts, DBMS, and OS were asked.

03
Round
Easy
HR Round
Duration30 Minutes
Interview date11 Oct 2021
Coding problem1

1. Basic HR Questions

Questions on 
1. Internship experiences.
2. Projects in college.
3. Hackathons learnings.
4. Future goals.
were asked.

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?

Choose another skill to practice
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