blob: a7ed8a6cdd984442eb0c824938c0283e2fbd195a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
|
---
title: interval
---
An [_interval_](https://en.wikipedia.org/wiki/Interval_(mathematics)) is a range of numbers between two endpoints: closed, open, or half-open.
- A _closed interval_, denoted by brackets, includes its endpoints. For example, [0, 1] is the interval where `0 <= x <= 1`.
- An _open interval_, denoted by parentheses, excludes its endpoints. For example, (0, 1) is the interval where `0 < x < 1`.
- A _half-open interval_ includes only one of its endpoints. For example, (0, 1] is the _left-open_ interval where `0 < x <= 1`, while [0, 1) is the _right-open_ interval where `0 <= x < 1`.
|
