Twilio Interview Questions

Twilio Interview Questions

Showing 13 questions

Ranking

A question's ranking corresponds to how commonly it's asked by Twilio. The higher the ranking, the more likely you'll encounter it in a Twilio interview.

Question

Frequency

Difficulty

Maximize Greatness of an Array

Given an array of numbers, rearrange it to maximize the number of indices where array[i] < rearranged_array[i]. Essentially, you want to maximize how many numbers in the array can be replaced by a strictly larger number from within the same array.

ArraysTwo PointersGreedy Algorithms

If you have a Twilio interview, it's very likely that you will get this question

#1. Maximize Greatness of an Array

Given an array of numbers, rearrange it to maximize the number of indices where array[i] < rearranged_array[i]. Essentially, you want to maximize how many numbers in the array can be replaced by a strictly larger number from within the same array.

ArraysTwo PointersGreedy Algorithms

This question is very likely to be asked in your Twilio interview

Univalued Binary Tree

Determine if a binary tree is univalued, meaning every node has the same value. You need to check if all nodes in the tree contain the same value.

If you have a Twilio interview, it's very likely that you will get this question

#2. Univalued Binary Tree

Determine if a binary tree is univalued, meaning every node has the same value. You need to check if all nodes in the tree contain the same value.

This question is very likely to be asked in your Twilio interview

You're given a date string in a specific format (e.g., "20th Oct 2052") and need to convert it to a standardized format (YYYY-MM-DD).

Somewhat likely

If you have a Twilio interview, you might get this question

#3. Reformat Date

You're given a date string in a specific format (e.g., "20th Oct 2052") and need to convert it to a standardized format (YYYY-MM-DD).

This question is somewhat likely to be asked in your Twilio interview

Top K Frequent Elements

Find the k most frequent elements in a given array of numbers. Return the top k elements based on their frequency.

Somewhat likely

If you have a Twilio interview, you might get this question

#4. Top K Frequent Elements

Find the k most frequent elements in a given array of numbers. Return the top k elements based on their frequency.

This question is somewhat likely to be asked in your Twilio interview

Ways to Make a Fair Array

You're given an array of numbers. Find how many ways you can remove a single element to make the sums of the even-indexed and odd-indexed elements equal.

ArraysDynamic Programming

Somewhat likely

If you have a Twilio interview, you might get this question

#5. Ways to Make a Fair Array

You're given an array of numbers. Find how many ways you can remove a single element to make the sums of the even-indexed and odd-indexed elements equal.

ArraysDynamic Programming

This question is somewhat likely to be asked in your Twilio interview

Reconstruct Itinerary

You're given a list of flight tickets, each representing a departure and arrival airport. Reconstruct the itinerary by visiting all the airports in the lexicographically smallest order, starting from "JFK".

GraphsRecursion

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

#6. Reconstruct Itinerary

You're given a list of flight tickets, each representing a departure and arrival airport. Reconstruct the itinerary by visiting all the airports in the lexicographically smallest order, starting from "JFK".

GraphsRecursion

This question is not likely to be asked in your Twilio interview

Count Vowel Strings in Ranges

You are given an array of strings. Determine how many strings within given ranges start and end with a vowel.

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

#7. Count Vowel Strings in Ranges

You are given an array of strings. Determine how many strings within given ranges start and end with a vowel.

This question is not likely to be asked in your Twilio interview

Text Justification

Given a sequence of words and a line width, format the text to fit within the specified width. You must justify the text, distributing extra spaces evenly between words.

ArraysStringsGreedy Algorithms

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

#8. Text Justification

Given a sequence of words and a line width, format the text to fit within the specified width. You must justify the text, distributing extra spaces evenly between words.

ArraysStringsGreedy Algorithms

This question is not likely to be asked in your Twilio interview

Given a list of words, group together all the anagrams. Anagrams are words that contain the same letters rearranged.

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

#9. Group Anagrams

Given a list of words, group together all the anagrams. Anagrams are words that contain the same letters rearranged.

This question is not likely to be asked in your Twilio interview

Letter Combinations of a Phone Number

Given a string of digits, return all possible letter combinations that the number could represent, using the typical phone keypad mapping. The goal is to generate all valid combinations in any order.

StringsRecursion

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

#10. Letter Combinations of a Phone Number

Given a string of digits, return all possible letter combinations that the number could represent, using the typical phone keypad mapping. The goal is to generate all valid combinations in any order.

StringsRecursion

This question is not likely to be asked in your Twilio interview

Wildcard Matching

Determine if a string matches a pattern containing wildcard characters '?' (matches any single character) and '*' (matches any sequence of characters, including the empty sequence).

StringsDynamic ProgrammingGreedy AlgorithmsRecursion

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

#11. Wildcard Matching

Determine if a string matches a pattern containing wildcard characters '?' (matches any single character) and '*' (matches any sequence of characters, including the empty sequence).

StringsDynamic ProgrammingGreedy AlgorithmsRecursion

This question is not likely to be asked in your Twilio interview

Minimum Number of Swaps to Make the String Balanced

Determine the fewest swaps needed to balance a string containing only '[' and ']' characters. A balanced string has an equal number of opening and closing brackets correctly nested.

StringsTwo PointersStacksGreedy Algorithms

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

#12. Minimum Number of Swaps to Make the String Balanced

Determine the fewest swaps needed to balance a string containing only '[' and ']' characters. A balanced string has an equal number of opening and closing brackets correctly nested.

StringsTwo PointersStacksGreedy Algorithms

This question is not likely to be asked in your Twilio interview

Minimum Equal Sum of Two Arrays After Replacing Zeros

You're given two arrays that contain zeros. Replace the zeros in each array with positive integers to maximize the chance of making the two arrays have equal sums. Find the minimum equal sum achievable or determine if it's impossible.

ArraysGreedy Algorithms

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

#13. Minimum Equal Sum of Two Arrays After Replacing Zeros

You're given two arrays that contain zeros. Replace the zeros in each array with positive integers to maximize the chance of making the two arrays have equal sums. Find the minimum equal sum achievable or determine if it's impossible.

ArraysGreedy Algorithms

This question is not likely to be asked in your Twilio interview

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