Integer Integer An integer (from the Latin "integer" meaning "whole") is a number that can be written without a fractional component. For example, 21, 4, 0, and −2048 are integers, while 9.75, , and are not. The set of integers consists of zero (), the positive natural numbers (, , , …), also called "whole numbers" or "counting numbers", and their additive inverses (the negative integers, i.e., −1, −2, −3, …). The set of integers is often denoted by a boldface Z ("") or blackboard bold formula_1 (Unicode U+2124 ℤ) standing for the German word "Zahlen" (, "numbers"). The integers form
Sort (C++) cases), requiring only quasilinear time with exponent 2 – O("n" log "n") – if additional memory is not available, but linearithmic time O("n" log "n") if additional memory is available. This allows the use of in-place merge sort for in-place stable sorting and regular merge sort for stable sorting with additional memory. Partial sorting is implemented by , which takes a range of elements and an integer , and reorders the range so that the smallest elements are in the first positions in sorted order (leaving the remaining in the remaining positions, in some unspecified order). Depending on design this