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Day 30 ques 1 Number of Longest Increasing Subsequence #617

@prerna-rn

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@prerna-rn

Given an integer array nums, return the number of longest increasing subsequences.

Notice that the sequence has to be strictly increasing.

Example 1:

Input: nums = [1,3,5,4,7]
Output: 2
Explanation: The two longest increasing subsequences are [1, 3, 4, 7] and [1, 3, 5, 7].

Example 2:

Input: nums = [2,2,2,2,2]
Output: 5
Explanation: The length of the longest increasing subsequence is 1, and there are 5 increasing subsequences of length 1, so output 5.

Constraints:

1 <= nums.length <= 2000
-10^6 <= nums[i] <= 10^6

https://leetcode.com/problems/number-of-longest-increasing-subsequence/description/

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