Twilio OA 2024 | Vanity Phone Numbers & Telecom Call Routing

Problem 1 - Vanity Phone Numbers Problem Statement You are given: An array phoneNumbers containing phone numbers. An array vanityCodes containing uppercase alphabetic codes. Using the standard T9 keypad mapping: 2 → ABC 3 → DEF 4 → GHI 5 → JKL 6 → MNO 7 → PQRS 8 → TUV 9 → WXYZ Convert each vanity code into its numeric equivalent. Return all phone numbers that contain the numeric representation of at least one vanity code. The result must ...