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Find the mean vector of a Matrix in C++
Suppose we have a matrix of order M x N, we have to find the mean vector of the given matrix. So if the matrix is like −
| 1 | 2 | 3 |
| 4 | 5 | 6 |
| 7 | 8 | 9 |
Then the mean vector is [4, 5, 6] As the mean of each column is (1 + 4 + 7)/3 = 4, (2 + 5 + 8)/3 = 5, and (3 + 6 + 9)/3 = 6
From the example, we can easily identify that if we calculate the mean of each column will be the mean vector.
Example
#include<iostream>
#define M 3
#define N 3
using namespace std;
void calculateMeanVector(int mat[M][N]) {
cout << "[ ";
for (int i = 0; i < M; i++) {
double average = 0.00;
int sum = 0;
for (int j = 0; j < N; j++)
sum += mat[j][i];
average = sum / M;
cout << average << " ";
}
cout << "]";
}
int main() {
int mat[M][N] = {{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
};
cout << "Mean vector is: ";
calculateMeanVector(mat);
}Output
Mean vector is: [ 4 5 6 ]
Updated on 17-Dec-2019 12:05:50
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