Pure Storage Interview Guide

#1. Valid Square

This question is very likely to be asked in your Pure Storage interview

Determine if four given points in a 2D plane form a valid square. A valid square has four equal sides and four right angles.

Palindromic Substrings

Find the number of palindromic substrings within a given string. Consider each single character and repeated characters as a substring.

StringsDynamic ProgrammingTwo Pointers

Somewhat likely

If you have a Pure Storage interview, you might get this question

#2. Palindromic Substrings

StringsDynamic ProgrammingTwo Pointers

Find the number of palindromic substrings within a given string. Consider each single character and repeated characters as a substring.

This question is somewhat likely to be asked in your Pure Storage interview

Design Skiplist

Implement a Skiplist data structure that supports efficient search, insertion, and deletion of elements. A Skiplist is a probabilistic data structure with multiple levels of linked lists.

Linked Lists

Somewhat likely

If you have a Pure Storage interview, you might get this question

Hard

#3. Design Skiplist

Hard

Implement a Skiplist data structure that supports efficient search, insertion, and deletion of elements. A Skiplist is a probabilistic data structure with multiple levels of linked lists.

Linked Lists

This question is somewhat likely to be asked in your Pure Storage interview

Maximum Repeating Substring

Determine the maximum number of times a given word consecutively repeats as a substring within a larger sequence. Find the largest integer k such that word * k is a substring of sequence.

Strings

If you have a Pure Storage interview, it's unlikely that you will get this question. Pure Storage does ask it, but it's rare

#4. Maximum Repeating Substring

This question is not likely to be asked in your Pure Storage interview

Determine the maximum number of times a given word consecutively repeats as a substring within a larger sequence. Find the largest integer k such that word * k is a substring of sequence.

Strings

Longest Palindromic Substring

Find the longest palindromic substring within a given string. A palindromic substring reads the same forwards and backward.

StringsTwo PointersDynamic Programming

If you have a Pure Storage interview, it's unlikely that you will get this question. Pure Storage does ask it, but it's rare

#5. Longest Palindromic Substring

StringsTwo PointersDynamic Programming

Find the longest palindromic substring within a given string. A palindromic substring reads the same forwards and backward.

This question is not likely to be asked in your Pure Storage interview

Insert Delete GetRandom O(1)

Design a data structure that supports insertion, deletion, and random element retrieval, all in constant time on average. You'll need to handle edge cases carefully to achieve O(1) complexity.

Arrays

If you have a Pure Storage interview, it's unlikely that you will get this question. Pure Storage does ask it, but it's rare

#6. Insert Delete GetRandom O(1)

This question is not likely to be asked in your Pure Storage interview

Design a data structure that supports insertion, deletion, and random element retrieval, all in constant time on average. You'll need to handle edge cases carefully to achieve O(1) complexity.

Arrays

Fizz Buzz

Write a program that prints numbers from 1 to n, replacing multiples of 3 with "Fizz", multiples of 5 with "Buzz", and multiples of both with "FizzBuzz".

ArraysStrings

If you have a Pure Storage interview, it's unlikely that you will get this question. Pure Storage does ask it, but it's rare

#7. Fizz Buzz