An array is a linear data structure that stores elements of the same data type in contiguous memory locations. In an array, elements can be inserted or removed at the beginning or end, but they are not typically considered to have a first-in, first-out (FIFO) or last-in, first-out (LIFO) order.

Instead, elements in an array are accessed using an index, which is a numerical position in the array. For example, if you have an array arr with elements [1, 2, 3], you can access the first element using arr[0], the second element using arr[1], and the third element using arr[2].

There are other data structures, such as queues and stacks, that are designed to have a specific ordering of elements (either FIFO or LIFO). These data structures can be implemented using arrays, but the array itself does not inherently have a FIFO or LIFO order.