sentences:  In some programming languages, such as C, arrays have a fixed lower bound (zero) and will contain data at each position up to the upper bound (so an array with 5 elements will have a range of 0 to 4).In others, such as PHP, an array may have holes where no element is defined, and therefore an array with a range of 0 to 4 will have "up to" 5 elements (and a minimum of 2).Another meaning of "range" in computer science is an alternative to iterator.