Two Dimensional Arrays Java Code Example

Snippet 1

  Two dimensional array:
int[][] twoD_arr = new int[10][20];

Three dimensional array:
int[][][] threeD_arr = new int[10][20][30];

Snippet 2

int[][]arr= new int [filas][columnas];

        int[][] a = {
            {1, 2, 3}, 
            {4, 5, 6, 9}, 
        // calculate the length of each row
        System.out.println("Length of row 1: " + a[0].length);
        System.out.println("Length of row 2: " + a[1].length);
        System.out.println("Length of row 3: " + a[2].length);

Snippet 3

   int[][] arr = new int[m][n];  

Snippet 4

  # In python, one dimensional array look like this:

array = ['plain', ' and ', 'boring!']

# and I'd call an index of that one dimensiona list like this:


>> boring!

# "Okay, nice, but what is a 2D array?" I hear you ask...
# Well, a 2D array would look like this:

array = (['wow, ', 'that is ', 'so ']
         ['cool', ' it has ', 'two rows!'])

# The 2D array has two rows instead of one.
# You can call its index like this:

print(array[1][2]) # [1] is the index of the second row and [2] is the index
# for 'two rows!'

>> two rows!

# And a 3D array would look like this:

array = ([1, 2, 3]
         [4, 5, 6]
         [7, 8, 9]) 

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