Given an array A and an integer K. Find the maximum for each and every contiguous subarray of size K. - Codeprg

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Friday, 3 July 2020

Given an array A and an integer K. Find the maximum for each and every contiguous subarray of size K.

Given an array A and an integer K. Find the maximum for each and every contiguous subarray of size K.
Given an array A and an integer K. Find the maximum for each and every contiguous subarray of size K.

Given an array A and an integer K. Find the maximum for each and every contiguous subarray of size K.


Example:
Input:
2
9 3
1 2 3 1 4 5 2 3 6
10 4
8 5 10 7 9 4 15 12 90 13

Output:
3 3 4 5 5 5 6
10 10 10 15 15 90 90


#include <bits/stdc++.h>

using namespace std;

int main() {
    //code
    int t;
    cin >> t;
    while (t--) {
        int n, m;
        cin >> n >> m;
        int a[n];
        for (int i = 0; i < n; ++i) {
            cin >> a[i];
        }

        int k = m, mx = 0, ind = -1;
        for (int i = 0; i < m; ++i) {
            if (mx < a[i]) {
                mx = a[i];
                ind = i;
            }
        }

        while (k <= n) {
            cout << mx << " ";
            if (a[k] > mx && k - ind < m)
                mx = a[k], ind = k;
            else if (k - ind == m) {
                mx = 0;
                for (int i = ind + 1; i <= k; ++i)
                    if (mx < a[i]) {
                        mx = a[i];
                        ind = i;
                    }
            }
            ++k;

        }


        cout << endl;

    }
    return 0;
}