Leetcode 128. Longest Consecutive Sequence

Find the length of the longest run of consecutive integers in an unsorted array, with an O(n) time requirement. The core idea is to detect sequence starts and count consecutive elements (commonly using a hash set to achieve linear time).

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 128. Longest Consecutive Sequence

Question Timeline

Comments

Questions

Learn

Links

Legal

Contact