C++ Program to Print matrix in snake pattern
Last Updated :
12 Aug, 2022
Given an n x n matrix in the given matrix, you have to print the elements of the matrix in the snake pattern.
Examples:
Input :mat[][] = { {10, 20, 30, 40},
{15, 25, 35, 45},
{27, 29, 37, 48},
{32, 33, 39, 50}};
Output : 10 20 30 40 45 35 25 15 27 29
37 48 50 39 33 32
Input :mat[][] = { {1, 2, 3},
{4, 5, 6},
{7, 8, 9}};
Output : 1 2 3 6 5 4 7 8 9
We traverse all rows. For every row, we check if it is even or odd. If even, we print from left to right else print from right to left.
C++
#include <iostream>
#define M 4
#define N 4
using namespace std;
void print(int mat[M][N])
{
for (int i = 0; i < M; i++) {
if (i % 2 == 0) {
for (int j = 0; j < N; j++)
cout << mat[i][j] << " ";
} else {
for (int j = N - 1; j >= 0; j--)
cout << mat[i][j] << " ";
}
}
}
int main()
{
int mat[][] = { { 10, 20, 30, 40 },
{ 15, 25, 35, 45 },
{ 27, 29, 37, 48 },
{ 32, 33, 39, 50 } };
print(mat);
return 0;
}
|
Output :
10 20 30 40 45 35 25 15 27 29 37 48 50 39 33 32
Time complexity: O(N^2) for given N*N matrix
Auxiliary Space: O(1)
Please refer complete article on Print matrix in snake pattern for more details!
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