Скачать или смотреть What Is an Array of Arrays?

An array of arrays in computer programming is a data structure that holds another array at each index. This means the datum at each sequential address in the topmost level array is actually the first datum element of each sub-array. In turn, each sub-array also can be an array of arrays, allowing the nesting of arrays as deeply as needed. Although the concept might seem complex, there actually are very simple declaration and dereferencing notations that allow an array of arrays to be very clearly expressed inside a program. One of the most common uses for an array of arrays is to store information in a grid pattern, as can be the case with an image.