Longest Consecutive Sequence · Coding Interview Practice

Longest Consecutive SequenceGiven an unsorted array, return the length of the longest sequence of consecutive integers. Run in O(n) time.Constraints

0 <= nums.length <= 10^5

-10^9 <= nums[i] <= 10^9

Examples

Input: nums = [100,4,200,1,3,2] Output: 4

Input: nums = [0,3,7,2,5,8,4,6,0,1] Output: 9

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