Your Dashboard
Interview Coaching
Learn
System Design
ML System Design
Code
Behavioral
Salary Negotiation
Interview Guides
Search
⌘K
Get Premium
Leetcode 3438. Find Valid Pair of Adjacent Digits in String
Find the first adjacent pair of distinct digits in the string (scanned left-to-right) such that each digit's total frequency in the entire string equals its numeric value, and return that two-character pair or an empty string if none exists. Digits are '1'–'9' and length is up to 100.
Question Timeline
See when this question was last asked and where, including any notes left by other candidates.
All Regions
Comments
Hello Interview Premium
Your account is free and you can post anonymously if you choose.