矩阵对角线交换程序的C程序
给定一个 n*n 阶的方阵,你必须交换两条对角线的元素。
例子 :
Input : matrix[][] = {1, 2, 3,
4, 5, 6,
7, 8, 9}
Output : matrix[][] = {3, 2, 1,
4, 5, 6,
9, 8, 7}
Input : matrix[][] = {4, 2, 3, 1,
5, 7, 6, 8,
9, 11, 10, 12,
16, 14, 15, 13}
Output : matrix[][] = {1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
11, 14, 15, 16}
解释:交换方阵的对角线背后的想法很简单。从 0 迭代到 n-1,每次迭代都必须交换 a[i][i] 和 a[i][ni-1]。
时间复杂度:O(n)
C
// C program to interchange
// the diagonals of matrix
#include
using namespace std;
#define N 3
// Function to interchange diagonals
void interchangeDiagonals(int array[][N])
{
// swap elements of diagonal
for (int i = 0; i < N; ++i)
if (i != N / 2)
swap(array[i][i], array[i][N - i - 1]);
for (int i = 0; i < N; ++i)
{
for (int j = 0; j < N; ++j)
printf(" %d", array[i][j]);
printf("
");
}
}
// Driver Code
int main()
{
int array[N][N] = {4, 5, 6,
1, 2, 3,
7, 8, 9};
interchangeDiagonals(array);
return 0;
}
输出:
6 5 4
1 2 3
9 8 7
请参阅完整的文章关于交换矩阵对角线的程序以获取更多详细信息!