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Multi-Language (Coding): Two-Edit Match Test

In this coding session, the candidate will be assessed on their ability to solve a problem that requires manipulating linked lists and strings in an efficient way.

Summarize this test and see how it helps assess top talent with:

Test type
Coding
Duration
40 min
Level
Intermediate
Questions
1

Available in

  • English

Skills measured

Strings, Linked lists

Strings are sequences of characters, used to represent text in programming languages. They are essential for tasks such as input/output operations, text manipulation, and data processing. Linked lists are a data structure where each element points to the next, forming a chain-like structure. They are important for dynamic memory allocation, efficient insertion and deletion operations, and implementing advanced data structures like stacks and queues. Understanding and mastering strings and linked lists are crucial skills for any programmer to efficiently manage and manipulate data.

Use of the Multi-Language (Coding): Two-Edit Match Test

Given two string arrays, queries, and dictionary, the task is to find all the words in the queries array that match with some word from the dictionary array after a maximum of two edits. An edit refers to changing any letter in the word to any other letter. Both queries and dictionary arrays have the same length and consist of lowercase English letters.

The approach to solve the problem is to iterate through each word in the queries array, and for each word, we will iterate through each character in the word, and try to replace it with each of the 26 letters of the English alphabet to get all possible variations of the word after one edit. For each of these variations, we will check if it exists in the dictionary array. If it does, we add the original word to the result. If not, we iterate through each character in the variation, and for each character, we try to replace it with each of the 26 letters of the English alphabet to get all possible variations of the variation after one more edit. For each of these variations, we will check if it exists in the dictionary array. If it does, we add the original word to the result.

Finally, we return the list of words that match with some word from the dictionary after a maximum of two edits. The words should be returned in the same order they appear in queries.

Who is this test for?

This test library will assess the candidate of their logical thinking, coding skills and technical knowledge of the concepts in DSA.

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The Multi-Language (Coding): Two-Edit Match Subject Matter Expert

Testlify's skill tests are designed by experienced SMEs (subject matter experts). We evaluate these experts based on specific metrics such as expertise, capability, and their market reputation. Prior to being published, each skill test is peer-reviewed by other experts and then calibrated based on insights derived from a significant number of test-takers who are well-versed in that skill area. Our inherent feedback systems and built-in algorithms enable our SMEs to refine our tests continually.

Why Testlify.

Why choose Testlify

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