Leetcode 2351. First Letter to Appear Twice
Given a lowercase string, return the character whose second occurrence appears earliest in the string (i.e., has the smallest index of a second appearance); the input length is 2–100 and contains at least one repeated letter.
Question Timeline
See when this question was last asked and where, including any notes left by other candidates.
All Regions
Hello Interview Premium
Your account is free and you can post anonymously if you choose.