0.7000 Matrix Addressing To refer to the element in row and column of matrix x, y(row,coumn) >> x-[16 13 19 19; 182 19/10; 3 6 3 16; 18 11 19 3] >> x(3,3) ans €3 >> x(3,:) ans = 3 6 3 16 To create a submatrix using the colon operator: >> y=x(2:end, Dend-1) y= 18 2 19 363 18 11 19 >> z= y(1:22:3) z= 2 19 63 رو میاد که به وه (13)

Using c++   Reverse vector   Complete Reverse() function that returns a new character vector containing all contents in the input argument reversed. Ex: If the input vector is: ['a', 'b', 'c'] then the returned vector will be: ['c', 'b', 'a']     #include <algorithm>#include <iostream>#include <vector>using namespace std; int main(){    // initializing the vector    vector<char> vect = { };           // Printing the vector    cout<<"Reversing a vector by using reverse iterators"<<endl;    cout << "Vector: ";    for (int i = 0; i < vect.size(); i++)        cout << vect[i];    cout << endl;     //reversing the vector    vector<char> v2 (vect.rbegin(),vect.rend());    vect.swap(v2);     // Printing the reversed vector    cout << "Reversed Vector: ";    for (int i = 0; i < vect.size(); i++)        cout << vect[i];    cout << endl;    return 0;}

Using df <- mtcars

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