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.
Java
// Java program to print matrix in snake orderimport java.util.*;class GFG{ static void print(int [][] mat) { // Traverse through all rows for (int i = 0; i < mat.length; i++) { // If current row is even, print from // left to right if (i % 2 == 0) { for (int j = 0; j < mat[0].length; j++) System.out.print(mat[i][j] +" "); // If current row is odd, print from // right to left } else { for (int j = mat[0].length - 1; j >= 0; j--) System.out.print(mat[i][j] +" "); } } } // Driver code public static void main(String[] args) { int mat[][] = new int[][] { { 10, 20, 30, 40 }, { 15, 25, 35, 45 }, { 27, 29, 37, 48 }, { 32, 33, 39, 50 } }; print(mat); }}/* This code is contributed by Mr. Somesh Awasthi */ |
Output :
10 20 30 40 45 35 25 15 27 29 37 48 50 39 33 32
Time complexity: O(n^2) where n is no of elements in rows and columns
Auxiliary Space: O(1) because constant space has been used
Please refer complete article on Print matrix in snake pattern for more details!
Feeling lost in the world of random DSA topics, wasting time without progress? It’s time for a change! Join our DSA course, where we’ll guide you on an exciting journey to master DSA efficiently and on schedule.
Ready to dive in? Explore our Free Demo Content and join our DSA course, trusted by over 100,000 neveropen!
Ready to dive in? Explore our Free Demo Content and join our DSA course, trusted by over 100,000 neveropen!
