Subarrays Distinct Element Sum of Squares II — LeetCode 2916 Python Solution
HardBinary Indexed TreeSegment TreeArrayDynamic Programming
- Problem
- #2916
- Pattern
- Dynamic Programming
- Reading time
- 2 min
- Source
- leetcode.com
The problem
You are given a 0-indexed integer array nums. The distinct count of a subarray of nums is defined as: Let nums[i..j] be a subarray of nums consisting of all the indices from i to j such that 0 <= i <= j < nums.length.
Example
- Input
- nums = [1,2,1]
- Output
- 15
- Explanation
- Six possible subarrays are:
Complexity
| Measure | Complexity |
|---|---|
| Time | O(n·m) (typical) |
| Space | O(n·m) or optimized auxiliary |
Pattern: Dynamic Programming
Define a state, write the transition, and stop recomputing the same subproblem. LeetCode 2916. Subarrays Distinct Element Sum of Squares II is filed here on both counts: the reference solution below belongs to the algorithm family this hub collects, and LeetCode tags it Dynamic Programming.
The dynamic programming guide has the Python template for the pattern and the 481 LeetCode problems that use it.
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Frequently asked questions
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- LeetCode 2916. Subarrays Distinct Element Sum of Squares II is rated Hard on LeetCode.
- What topics does LeetCode 2916. Subarrays Distinct Element Sum of Squares II cover?
- LeetCode 2916. Subarrays Distinct Element Sum of Squares II is tagged Binary Indexed Tree, Segment Tree, Array and Dynamic Programming on LeetCode.