package top100liked

import "testing"

// https://leetcode.cn/problems/longest-consecutive-sequence/description/?envType=study-plan-v2&envId=top-100-liked

func longestConsecutive(nums []int) int {
	numSet := map[int]bool{}
	for _, num := range nums {
		numSet[num] = true
	}
	res := 0
	for k := range numSet {
		if numSet[k-1] {
			continue
		}
		curNum := k
		curLen := 1
		for numSet[curNum+1] {
			curNum++
			curLen++
		}
		if curLen > res {
			res = curLen
		}
	}
	return res
}

func TestS3(t *testing.T) {
	println(longestConsecutive([]int{100, 4, 200, 1, 3, 2}))
}