Tiger Analytics interview experience Real time questions & tips from candidates to crack your interview
Programmer Analyst
Tiger Analytics
4 rounds | 6 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 2 months
Topics: Data Structures, Algorithms, Linear Algebra related Implementations in Python, Data Science Concepts, Probability, Statistics
Tip 1 : Be proficient in Python, be able to implement Matrix related Questions ( dot product, determinant, etc)
Tip 2 : Revise properly about the Probability distribution functions, Conditional Probability-based questions.
Tip 3 : In-depth understanding of ML Algorithms is needed. Should be proficient with the projects.
Application process
Where: Other
Eligibility: Above 1 years of experience
Tip 1 : Be confident about each skill and project you mentioned in the resume.
Tip 2 : Try to make a 1 page resume.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date6 Mar 2022
Coding problem1
In this round, 12 MCQ questions were given based on Data Science ( Confusion Matrix related calculations, Entropy, Probability, and Statistics). Each Question carried 10 marks. (Total - 120)
There were 2 coding questions ( Language Limitation - Python)
Medium Question - ( 40 pts)
Hard Question(60 pts)
1. Count of Smaller Elements
Hard
45m average time
55% success
0/120
Asked in companies
Given an array of size 'N' return the count array such that COUNT[i] equals the number of element which are smaller than ARR[ i ] on its the right side.
For Example : ARR = [4,2,1,5] the count array corresponding to the given array is :-.
The Number of elements smaller than 4 on its right side is 2.
The Number of elements smaller than 2 on its right side is 1.
The Number of elements smaller than 1 on its right side is 0.
The Number of elements smaller than 5 on its right side is 0.
Hence the count array is [2,1,0,0]
Problem approach
This is a range query problem. If you are good at Segment Trees, you can easily solve it.
I have used 3 functions.
i) Build Segment tree
ii) Update function
iii) Get Function
02
Round
Medium
Face to Face
Duration60 minutes
Interview date9 Mar 2022
Coding problem2
It was a Face to Face Interview Round where I have been asked questions on Python, Data Science Concepts, and Conditional probability.
1. Probability Question
There are a total of 100 coins. 99 fair coins and 1 unfair coin. What is the probability that in 10 flips all will be head given it is a fair coin?
Problem approach
Tip 1 : Think about Bayes' Theorem to solve the question.
Tip 2 : Frame the problem statement in terms of the Bayes Theorem equation and find out each probability term.
2. Probability Question
If a month is of 31 days, what is the probability of getting 5 Sundays in that month?
Problem approach
Tip 1 : Try to find the Logic. There are 4 weekdays so total of 28 days. So, the remaining combinations are of 3 days.
(Sat, Sun,Mon)
(Sun, Mon,Tue)
(Mon,Tue,Wed)
(Tue,Wed,Thr)
(Wed,Thr,Fri)
(Thrs,Fri,Sat)
(Fri,Sat,Sun)
So, 3/7 is the ans.
03
Round
Medium
Face to Face
Duration60 minutes
Interview date11 Mar 2022
Coding problem2
This round was also based on Probability and Statistics questions and Python Coding.
1. Check if a number is a Power of 3 or not
Easy
15m average time
85% success
0/40
Asked in companies
Given an integer 'N', you need to determine whether the given integer is a power of 3 or not.
Problem approach
Solution 1 : I have used a simple loop firstly to check if a number is a power of 3 or not.
Solution 2 : I have used Log base 3 using the math library to find the answer.
2. Probability Question
In an interval of 10 minutes, the chances of seeing at least one plane are 15%. In the next 30 minutes, what is the probability of seeing at least one plane?
Problem approach
Tip 1: Think about Binomial Distribution to solve the question.
P(seeing a plane) = 0.15
P(seeing not a plane) = 0.75
So, n = 3 ( as it is 30 minutes)
Ans = At least one plane means finding P(0) = (0.75)**3
04
Round
Easy
HR Round
Duration30 minutes
Interview date11 Mar 2022
Coding problem1
In this round, I have been asked Why you want to switch, general Compensation discussions.
1. Basic HR Question
Why are you looking for a job change?
Problem approach
Tip : For an experienced professional seeking a change, this is a common question. The easiest method to respond to this question is to state that you are leaving your current work in order to advance your career. Make sure you don't criticize or speak poorly about the company where you now work.
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 3 + 2 * 4 based on operator precedence?
Choose another skill to practice
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