# Navi Technologies Interview Experience for SDE | On-Campus

• Difficulty Level : Hard
• Last Updated : 01 Sep, 2021

Round 1: Online Test 48 questions,

Time : 2 hours

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Platform : DoSelect

• Aptitude (20 questions ): profit Loss, mixtures, ratios and identities, series completion, mirror images, etc
• Maths (25 questions): Quadratic Equation, Probability (Bayes Theorem), Surds, number Theory, Kinematics, Differentiability and continuity, combinatorics

I forgot to scroll and time was very limited so I thought there were only 17 questions in both the sections but I did all of them (34) so I was selected anyway.

Section A, B had a total of 45 questions, and 40 minutes were given to complete.

Coding Level A:

Time: 50 minutes 2 question

• 2 Questions. Both of them were easy. Implementation was a bit tricky for one of them.

Coding Level B:

Time: 30 Minutes

• You are given n coordinates in a 1D plane and the max distance you are allowed to travel d. Calculate the max number of coordinates you can reach starting from 0 coordinate in O(nlogn).
```Eg: -20,-5,5,10,15,28 | d=25

Coding Questions were simple. Time was very limited for aptitude/maths questions.

Round 1: Technical round, Problem Solving

Time: 45 Minutes

• Then I was given a google doc, where I had to write my approach and code. You can use any IDE but don’t use any built in functions.
•  Given column number in excel sheet, give the column name in the alphabet.
`Eg:  1 → A | 26 → Z | 27 → AA | 53 → BA etc.`
• Calculate a minimum number of operations to convert string s1 to s2. Replace, insert, delete operation on any character.
```Eg: Convert ABCD to AFBGD
Answer: 2 (delete F, replace G)```

Round 2 and 3: Technical + Behavioural Round

Time: Almost 2 Hours