It depends on the makeup of the list of integers and the constraints of time and memory.

WSJ: How to Ace a Google Interview

Early in the 19th century, they began to look more closely at how often primes occur among the integers.

ECONOMIST: Mathematics

If the signal falls somewhere between integers, it's rounded up or down to the nearest one (known as quantization).

ENGADGET: Primed: digital audio basics Mobile

However, the opportunities presented for enhanced global co-operation are extraordinary if all countries join hands to preserve and protect the world's precious store of integers.

ECONOMIST: Poisson: More is more | The

What's the most efficient way to sort a million 32-bit integers?

WSJ: How to Ace a Google Interview