Class Solution


  • public class Solution
    extends Object
    300 - Longest Increasing Subsequence.

    Medium

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

    A subsequence is a sequence that can be derived from an array by deleting some or no elements without changing the order of the remaining elements. For example, [3,6,2,7] is a subsequence of the array [0,3,1,6,2,2,7].

    Example 1:

    Input: nums = [10,9,2,5,3,7,101,18]

    Output: 4

    Explanation: The longest increasing subsequence is [2,3,7,101], therefore the length is 4.

    Example 2:

    Input: nums = [0,1,0,3,2,3]

    Output: 4

    Example 3:

    Input: nums = [7,7,7,7,7,7,7]

    Output: 1

    Constraints:

    • 1 <= nums.length <= 2500
    • -104 <= nums[i] <= 104

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

    • Constructor Detail

      • Solution

        public Solution()
    • Method Detail

      • lengthOfLIS

        public int lengthOfLIS​(int[] nums)