Arrays

Front

What is an array in programming?

Back

An array is a data structure that can store a fixed-size sequential collection of elements of the same type.

Front

How do you define the number of rows and columns in a 2D array?

Back

The number of rows and columns in a 2D array is defined by two integers, where the first integer represents the number of rows and the second integer represents the number of columns.

Front

What is the difference between a row and a column in an array?

Back

A row is a horizontal line of elements in an array, while a column is a vertical line of elements.

Front

How can you access an element in a 2D array?

Back

You can access an element in a 2D array using its row and column indices, typically in the format array[rowIndex][columnIndex].

Front

What does it mean to partition a rectangle into rows and columns?

Back

Partitioning a rectangle into rows and columns means dividing the rectangle into smaller sections, where each section represents a cell in the array.

Front

If a rectangle is divided into 3 rows and 5 columns, how many total cells are there?

Back

There are a total of 15 cells, calculated by multiplying the number of rows (3) by the number of columns (5).

Front

What is the formula to calculate the total number of elements in a 2D array?

Back

The total number of elements in a 2D array can be calculated using the formula: total elements = number of rows × number of columns.

Front

What is a common use case for arrays in programming?

Back

Arrays are commonly used to store lists of items, such as a list of student names, scores, or any collection of data that can be indexed.

Front

How do you determine the dimensions of an array from a given problem statement?

Back

To determine the dimensions of an array, analyze the problem statement for keywords indicating rows and columns, and count the specified numbers.

Front

What is the significance of even partitioning in arrays?

Back

Even partitioning in arrays ensures that each row and column has the same number of elements, which can simplify data processing and access.