Find dictionary words matching a phone digit string

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Quick Overview

This question evaluates familiarity with phone-keypad character-to-digit mappings, string pattern matching, and efficient filtering of dictionary words, testing competencies in mapping, string manipulation, and algorithmic performance within the coding & algorithms domain.

Find dictionary words matching a phone digit string

Company: LinkedIn

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Onsite

Overview: This question evaluates familiarity with phone-keypad character-to-digit mappings, string pattern matching, and efficient filtering of dictionary words, testing competencies in mapping, string manipulation, and algorithmic performance within the coding & algorithms domain.

Read the full LinkedIn Software Engineer interview experience this question came from

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LinkedIn
Jan 12, 2026
mediumSoftware EngineerOnsiteCoding & Algorithms
16
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