Question

PLEASE CODE EVERYTHING IN C++

Quick Thinking: Arrays

Objective: Test your knowledge in providing efficient solutions for operations on arrays. What you can use only:

• Loops
• These variables only
  • const int SIZE = 4;
  • int variable = 0, master array [SIZE][SIZE];
  • double average = 0.0, parallel array [SIZE];
• One conditional statement per problem if needed
• Note: the conditional statement cannot contain an “else” or “else if’ Provide solutions to the following problem. Absolutely no hard coding can be used.

----------------------------------------------------------------------------------------------------------------------------------------------------------

1) Populate the array

using loops and a variable on

an even/odd pattern by row

Master Array

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

2) Compute the average value of each column in the master array and store the values in a parallel array.

3) Compute the average of the entire array

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

4) Compute the average of the corners.

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

5) Compute the average of the left-to-right diagonal

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

6) Compute the average of inside only

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

7) Compute the average of the right-to-left diagonal

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

8) Compute the average value of each row in the master array and store the values in a parallel array.

9) Compute the average of the boundaries

0	2	4	6
7	9	11	13
14	16	18	20
21	23	25	27

PLEASE CODE EVERYTHING IN C++

Answer 1

Note: Solved Questions 1 to 7.

#include<stdio.h>
#include<iostream>
#include<cmath>
using namespace std;

int main()
{
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    const int SIZE = 4;
    int variable = 0;
    int master_array[SIZE][SIZE];
    double average = 0.0;
    double parallel_array[SIZE];
// populate the master array
    for (int row = 0; row < SIZE; row ++){
      for (int col = 0 ; col < SIZE;col++ ){
        master_array[row][col] = 2*col + 7*row;  //main pattern
      }
    }
    // printing the array for checking (commment out if not required)
    for (int row = 0; row < SIZE; row ++){
      for (int col = 0 ; col < SIZE;col ++ ){
        cout << master_array[row][col]<<" ";
      }
      cout << "\n";
    }

//calculating the average for each column
  for (int col = 0; col < SIZE;col++){
    average = 0; // resetting the average variable to 0
    for (int row = 0; row < SIZE; row ++){
      average += master_array[row][col];
    }
    parallel_array[col] = average/SIZE;  // saving the value of each column's average
  }

  cout <<"The value of the parallel array : "<<"\n";
  for (int i = 0; i < SIZE; i ++){
    cout << parallel_array[i] << " ";
  }


//computing average of the whole array
  average = 0;
  for (int i = 0; i < SIZE; i++){
    for (int j = 0 ; j < SIZE; j++){
      average += master_array[i][j];
    }
  }
  average = average/(SIZE*SIZE);
  // printing the result
  cout <<"\n";
  cout << "The average of the whole array is: ";
  cout << average << "\n";

//computing the average of the corners
  average = 0;
  for (int i = 0 ; i < SIZE; i++){
    for (int j = 0; j < SIZE; j++){
      if ((i == 0 && j == 0)||(i == 0 && j == SIZE-1)||(i == SIZE-1 && j == 0 )||(i == SIZE-1 && j == SIZE-1)){
        average += master_array[i][j];
        //cout << master_array[i][j] << " "
      }
    }
  }
  //printing the average of the corners
  cout << "The average of the corners: " << average/4 << "\n ";

//computing the average of the left to right diagonal
  average = 0;
  for (int i = 0; i < SIZE; i++){
    for (int j = 0; j < SIZE; j++){
      if (i==j){
        average += master_array[i][j];
      }
    }
  }
average = average/SIZE;
cout << "The average of the left to right diagonal "<< " "<<average;

//computing the average of the inside only
average = 0;
for (int i = 0; i < SIZE; i++){
  for (int j = 0; j < SIZE; j++){
    if ((i>0 && i < SIZE-1)&&(j>0 && j < SIZE-1)){
      average += master_array[i][j];
      // cout << master_array[i][j];
    }
  }
}
  cout <<"\n";
cout << "The average of the insides only : " << average/((SIZE-2)*(SIZE-2));

//computing the average of the right-to-left diagonal
average = 0;
for (int i = 0; i < SIZE; i++){
  for (int j = 0; j < SIZE; j++){
    if (i+j == SIZE-1){
      average += master_array[i][j];
    }
  }
}
cout <<" \n";
cout <<"The average of the right to left diagonal is: "<<average/SIZE<<"\n";

 return 0;
}

Code Output: