Computer Science – Programming | e-Consult

A one-dimensional array is a linear collection of elements, accessed using a single index. It's like a single row of boxes, where each box holds a value. A two-dimensional array is a collection of arrays, arranged in rows and columns. It's like a grid of boxes, where each box holds a value. Two-dimensional arrays are accessed using two indices – one for the row and one for the column.

A practical example of when you would use a two-dimensional array is to represent a grid or a matrix. For instance, you could use a two-dimensional array to represent a chessboard, a game board (like tic-tac-toe), or an image (where each element represents a pixel's color). Each element in the array would correspond to a specific cell or pixel in the grid.