Dsa
Two Pointers
Medium
Count Distinct Elements in Range
You are given an array of integers and a query defining a range. Your goal is to find the number of distinct integers within that range, both inclusive.
Input format:
- A single line containing N (1 ≤ N ≤ 100000), the number of elements in the array.
- A second line containing N integers, each representing an element of the array.
- A third line containing two integers L and R (0 ≤ L < R < N), defining the range of interest.
Output format:
- A single integer indicating the number of distinct integers in the specified range.
Example:
Input:
8
1 2 2 3 3 4 5 1
1 5
Output:
4
Key concepts
two_pointersarrayshashing
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