Two-Dimensional Arrays Basics Quiz

Test your knowledge on 2D arrays in various programming languages. Learn about declaration, initialization, and advantages.

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What is a two-dimensional array?

An array with two elements

An array that can hold multiple arrays

An array that can hold multiple elements of the same data type

An array with two dimensions

8 answered

How do you declare a two-dimensional array in C++?

int array[rows][columns];

int array[rows,columns];

int array(rows,columns);

int array(rows)[columns];

7 answered

Which of the following is true about two-dimensional arrays?

Each element in a 2D array can be of different data type

Each element in a 2D array must be of the same data type

Two-dimensional arrays cannot hold strings

Two-dimensional arrays are not supported in programming languages

5 answered

What is the index of the element at the second row and third column in a 2D array?

(1, 2)

(2, 3)

(2, 2)

(3, 2)

4 answered

In Java, how do you initialize a 2D array with specific values?

int[][] array = { {1, 2, 3}, {4, 5, 6} };

int[2][3] array = { {1, 2, 3}, {4, 5, 6} };

int[2][3] array = new int[2][3] { {1, 2, 3}, {4, 5, 6} };

int array[2][3] = { {1, 2, 3}, {4, 5, 6} };

3 answered

What is the time complexity for accessing an element in a 2D array?

O(1)

O(log n)

O(n)

O(n^2)

3 answered

What is the syntax for accessing an element in a 2D array in Python?

array[row, column]

array[row][column]

array(row, column)

array.row.column

3 answered

What is a jagged array?

An array with irregular number of elements

An array that only has one dimension

An array that is perfectly rectangular

An array with two dimensions

4 answered

What is the maximum number of dimensions a multi-dimensional array can have in C#?

It's unlimited

4 answered

#10

Which of the following languages doesn't support multi-dimensional arrays?

Python

Java

Assembly language

4 answered

#11

What is the data structure used to represent a two-dimensional array in memory?

Linked list

Binary tree

Array of arrays

Matrix

4 answered

#12

In which situation would you prefer using a jagged array over a multi-dimensional array?

When memory efficiency is critical

When the array elements have a uniform size

When representing a matrix

When the number of elements in sub-arrays varies

6 answered

#13

In which language are arrays always passed by reference?

Java

Python

C++

4 answered

Two-Dimensional Arrays Basics Quiz

What is a two-dimensional array?

How do you declare a two-dimensional array in C++?

Which of the following is true about two-dimensional arrays?

What is the index of the element at the second row and third column in a 2D array?

In Java, how do you initialize a 2D array with specific values?

What is the time complexity for accessing an element in a 2D array?

What is the syntax for accessing an element in a 2D array in Python?

What is a jagged array?

What is the maximum number of dimensions a multi-dimensional array can have in C#?

Which of the following languages doesn't support multi-dimensional arrays?

What is the data structure used to represent a two-dimensional array in memory?

In which situation would you prefer using a jagged array over a multi-dimensional array?

In which language are arrays always passed by reference?

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