Number of Longest Increasing Subsequence - Practice Coding | SlaveCode
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673. Number of Longest Increasing Subsequence
Medium
30 Points
Array
Dynamic Programming
Binary Indexed Tree
Segment Tree
Given an integer array nums, return the number of longest increasing subsequences.
Notice that the sequence has to be strictly increasing.
Examples
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
-106 <= nums[i] <= 106
The answer is guaranteed to fit inside a 32-bit integer.
673. Number of Longest Increasing Subsequence
Medium
30 Points
Array
Dynamic Programming
Binary Indexed Tree
Segment Tree
Given an integer array nums, return the number of longest increasing subsequences.
Notice that the sequence has to be strictly increasing.
Examples
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
-106 <= nums[i] <= 106
The answer is guaranteed to fit inside a 32-bit integer.