Problem 61028. The Case of the Missing Prototype – Extract the Culprit’s Name from a Mixed Letter-and-Number Email Message

While tracing the suspect’s digital footprint, you recover an email containing a mixed string of letters and numbers.The letters spell out the sender’s name, while the numbers are irrelevant noise.
Given a string msg, extract only the letters and return them in order to reveal the culprit’s name.
This small clue may finally tell you who sent the message!
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Solution Stats

62.5% Correct | 37.5% Incorrect
Last Solution submitted on Oct 27, 2025

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