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.

Available in

  • English

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

1 Skills measured

  • Strings, Linked lists

Test Type

Coding Test

Duration

40 mins

Level

Intermediate

Questions

1

Use of 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.

Skills measured

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.

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94%

Candidate satisfaction

Subject Matter Expert Test

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

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