Print matrix in snake pattern

https://www.geeksforgeeks.org/print-matrix-snake-pattern/

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 

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.

    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] +" ");

            }

        }

    }

https://www.geeksforgeeks.org/print-given-matrix-zigzag-form/

    static void printZigZag(int row, int col, int a[][])

    {

        int evenRow = 0; // starts from the first row

        int oddRow = 1; // starts from the next row

  

        while (evenRow < row) 

        {

            for (int i = 0; i < col; i++)

            {

                // evenRow will be printed in the same direction

                System.out.print(a[evenRow][i] + " "); 

            }

              

            // Skipping next row so as to get the next evenRow

            evenRow = evenRow + 2; 

              

            if(oddRow < row)

            {

            for (int i = col - 1; i >= 0; i--)

            {

                // oddRow will be printed in the opposite direction

                System.out.print(a[oddRow][i] + " "); 

            }

            }

          

            // Skipping next row so as to get the next oddRow

            oddRow = oddRow + 2; 

        }