12. Написать функцию для нахождения произведения элементов для каждого столбца двумерного динамического массива. Поменять местами столбцы с максимальным и минимальным значением произведения.
#include <iostream>
#include <limits>
void findProductOfColumns(int** matrix, int numRows, int numCols) {
if (numRows <= 0 || numCols <= 0) {
std::cout << "Invalid matrix dimensions." << std::endl;
return;
}
int* columnProducts = new int[numCols];
for (int j = 0; j < numCols; ++j) {
int product = 1;
for (int i = 0; i < numRows; ++i) {
product *= matrix[i][j];
}
columnProducts[j] = product;
std::cout << "Product of column " << j + 1 << ": " << product << std::endl;
}
int minProductIndex = 0;
int maxProductIndex = 0;
for (int j = 1; j < numCols; ++j) {
if (columnProducts[j] < columnProducts[minProductIndex]) {
minProductIndex = j;
}
if (columnProducts[j] > columnProducts[maxProductIndex]) {
maxProductIndex = j;
}
}
for (int i = 0; i < numRows; ++i) {
int temp = matrix[i][minProductIndex];
matrix[i][minProductIndex] = matrix[i][maxProductIndex];
matrix[i][maxProductIndex] = temp;
}
std::cout << "Columns with min and max products are swapped." << std::endl;
std::cout << "Updated matrix:" << std::endl;
for (int i = 0; i < numRows; ++i) {
for (int j = 0; j < numCols; ++j) {
std::cout << matrix[i][j] << " ";
}
std::cout << std::endl;
}
delete[] columnProducts;
}
int main() {
int numRows, numCols;
std::cout << "Enter the number of rows: ";
std::cin >> numRows;
std::cout << "Enter the number of columns: ";
std::cin >> numCols;
int** matrix = new int*[numRows];
for (int i = 0; i < numRows; ++i) {
matrix[i] = new int[numCols];
}
std::cout << "Enter the elements of the matrix:" << std::endl;
for (int i = 0; i < numRows; ++i) {
for (int j = 0; j < numCols; ++j) {
std::cin >> matrix[i][j];
}
}
findProductOfColumns(matrix, numRows, numCols);
for (int i = 0; i < numRows; ++i) {
delete[] matrix[i];
}
delete[] matrix;
return 0;
}
