The uniqueness of an array of integers is defined as the number of distinct elements present. For example, the uniqueness of [1, 5, 2, 1, 3, 5] is 4, element values 1, 2, 3, and 5. For an array arr of n integers, the uniqueness values of its subarrays is

Xerothermic Xenomorph answered on January 29, 2024 Popularity 3/10 Helpfulness 1/10

answer The uniqueness of an array of integers is defined as the number of distinct elements present. For example, the uniqueness of [1, 5, 2, 1, 3, 5] is 4, element values 1, 2, 3, and 5. For an array arr of n integers, the uniqueness values of its subarrays is

The uniqueness of an array of integers is defined as the number of distinct elements present. For example, the uniqueness of [1, 5, 2, 1, 3, 5] is 4, element values 1, 2, 3, and 5. For an array arr of n integers, the uniqueness values of its subarrays is

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#include <vector>
#include <unordered_map>
using namespace std;

int countWithAtMostK(vector<int> &arr, int k) {
    int cnt = 0;
    int n = arr.size();
    int st = 0;
    unordered_map<int, int> mp;
    int unique = 0;

    for (int end = 0; end < n; ++end) {
        if (mp.find(arr[end]) == mp.end()) {
            unique++;
        }
        mp[arr[end]]++;

        while (unique > k) {
            if (--mp[arr[st]] == 0) unique--;
            st++;
        }

        cnt += (end - st + 1);
    }

    return cnt;
}

int findMedianUniqueness(vector<int> &arr) {
    int n = arr.size();
    int l = 1, h = n;

    while (l <= h) {
        int mid = l + (h - l) / 2;

        if (countWithAtMostK(arr, mid) >= (n * (n + 1)) / 4) {
            h = mid - 1;
        } else {
            l = mid + 1;
        }
    }

    return l;
}

// Example usage
int main() {
    vector<int> arr = {1, 2, 1};
    int medianUniqueness = findMedianUniqueness(arr);
    // Output the result
    return 0;
}

Popularity 3/10 Helpfulness 1/10 Language cpp

Source: chat.openai.com

Tags: arr c++ defined distinct element elements n

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Contributed on Jan 29 2024

Xerothermic Xenomorph

0 Answers Avg Quality 2/10

The uniqueness of an array of integers is defined as the number of distinct elements present. For example, the uniqueness of [1, 5, 2, 1, 3, 5] is 4, element values 1, 2, 3, and 5. For an array arr of n integers, the uniqueness values of its subarrays is

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The uniqueness of an array of integers is defined as the number of distinct elements present. For example, the uniqueness of [1, 5, 2, 1, 3, 5] is 4, element values 1, 2, 3, and 5. For an array arr of n integers, the uniqueness values of its subarrays is

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