#include <iostream>
#include <vector>
#include <ctime>
#define ROWS 3
#define COLS 3
void print_matrix(const std::vector<std::vector<int>>& matrix) {
for (const auto& row : matrix) {
for (int elem : row) {
std::cout << elem << "\t";
}
std::cout << std::endl;
}
}
void reverse_matrix(std::vector<std::vector<int>>& matrix) {
int rows = matrix.size();
int cols = matrix[0].size();
int counter = 0;
for (int r = rows - 1, i = 0; i < rows; i++, r--) {
for (int c = cols - 1, j = 0; j < cols; j++, c--) {
std::swap(matrix[i][j], matrix[r][c]);
counter++;
if (counter > (rows * cols) / 2 - 1) return; // stop halfway
}
}
}
int main() {
std::vector<std::vector<int>> matrix = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
std::cout << "Matrix 1:\n";
print_matrix(matrix);
reverse_matrix(matrix);
std::cout << "Reversed Matrix 1:\n";
print_matrix(matrix);
srand(time(nullptr));
for (auto& row : matrix) {
for (int& elem : row) {
elem = rand() % 10 + 1;
}
}
std::cout << "\nMatrix 2:\n";
print_matrix(matrix);
reverse_matrix(matrix);
std::cout << "Reversed Matrix 2:\n";
print_matrix(matrix);
return 0;
}
/*
run:
Matrix 1:
1 2 3
4 5 6
7 8 9
Reversed Matrix 1:
9 8 7
6 5 4
3 2 1
Matrix 2:
4 3 7
3 5 6
5 1 10
Reversed Matrix 2:
10 1 5
6 5 3
7 3 4
*/
