Leetcode 3662. Filter Characters by Frequency

Given a string and a frequency criterion, return only the characters that meet that frequency condition (e.g., appear exactly/at least/within k times) as specified by the problem. This is solved by counting character frequencies with a hash map and then filtering the string (or set of characters) based on those counts in a single pass.

Question Timeline

See when this question was last asked and where, including any notes left by other candidates.

Company

Level

Region

Comments

Your account is free and you can post anonymously if you choose.

Hello Interview Premium

Recent interview questions

System Design Guided Practice

Exclusive content

Learn More

Leetcode 3662. Filter Characters by Frequency

Question Timeline

Comments

Questions

Learn

Links

Legal

Contact