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Longest Increasing Subsequence

MediumP1Coding

Given an integer array nums, return the length of the longest strictly increasing subsequence. A subsequence keeps the original order but may skip elements.

Example 1

Input
nums = [10,9,2,5,3,7,101,18]
Output
4
Why
One longest subsequence is [2,3,7,101].

Example 2

Input
nums = [0,1,0,3,2,3]
Output
4

Example 3

Input
nums = [7,7,7,7]
Output
1

Constraints

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

Hints

Run checks the 3 visible tests, Submit all 10.