Multidimensional Array

INFO

• To access or update a value, this is how we call the index: arrayName[rowIndex][columnIndex]
• For example: numbers[1][3] = 0 Can you guess which number will be replaced?

C/C++

//syntax
dataType arrayName[rowSize][columnSize] = {
    {value1, value2, ...},
    {value3, value4, ...},
    {value5, value6, ...}
};

//example
int numbers[3][4] = {
    {1, 2, 3, 4},
    {14, 23, 31, 42},
    {11, 24, 37, 40}
};

Java

//Syntax
dataType[][] arrayName = {
    {value1, value2, ...},
    {value3, value4, ...},
    {value5, value6, ...}
};

//example
int[][] numbers = {
    {1, 2, 3, 4},
    {14, 23, 31, 42},
    {11, 24, 37, 40}
};

Python

numbers = [
    [1, 2, 3, 4],
    [14, 23, 31, 42],
    [11, 24, 37, 40]
]

In Python, you can use a list of lists to represent a multidimensional array. To access the elements :

print(numbers[0][2])
print(numbers[1][1])
print(numbers[2][3])

Show the Value in Multidimensional Array

To show or display the values stored in a multidimensional array, you can typically use a nested loop to iterate through the array and print each element.

C/C++

for (int i = 0; i < rowSize; i++) {
    for (int j = 0; j < columnSize; j++) {
        printf("%d ", arrayName[i][j]);
    }
    printf("\n");
}

Java

for (int i = 0; i < rowSize; i++) {
    for (int j = 0; j < columnSize; j++) {
        System.out.print(arrayName[i][j] + " ");
    }
    System.out.println();
}

Python

for i in range(len(array_name)):
    for j in range(len(array_name[i])):
        print(array_name[i][j], end=" ")
    print()