Longest Increasing Subsequence

Given an integer array nums, return the length of the longest strictly increasing subsequence.

Follow up: Can you come up with an algorithm that runs in O(n log(n)) time complexity?

Example 1
Inputnums = [10,9,2,5,3,7,101,18]
Output4
The longest increasing subsequence is [2,3,7,101], therefore the length is 4.
Example 2
Inputnums = [0,1,0,3,2,3]
Output4
The longest increasing subsequence has length 4.

Constraints

  • 1 <= nums.length <= 2500
  • -10^4 <= nums[i] <= 10^4

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