Interval1D (Algorithms 4/e)

Object
- edu.princeton.cs.algs4.Interval1D

```
public class Interval1D
extends Object
```
The Interval1D class represents a one-dimensional interval. The interval is closed—it contains both endpoints. Intervals are immutable: their values cannot be changed after they are created. The class Interval1D includes methods for checking whether an interval contains a point and determining whether two intervals intersect.
For additional documentation, see Section 1.2 of Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne.

Author:

Robert Sedgewick, Kevin Wayne

Field Summary

Fields
Modifier and Type	Field and Description
`static Comparator<Interval1D>`	`LENGTH_ORDER` Compares two intervals by length.
`static Comparator<Interval1D>`	`MAX_ENDPOINT_ORDER` Compares two intervals by max endpoint.
`static Comparator<Interval1D>`	`MIN_ENDPOINT_ORDER` Compares two intervals by min endpoint.

Constructor Summary

Constructors
Constructor and Description

Interval1D(double min, double max)
Initializes a closed interval [min, max].

Constructors
Constructor and Description
`Interval1D(double min, double max)` Initializes a closed interval [min, max].

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`contains(double x)` Returns true if this interval contains the specified value.
`boolean`	`equals(Object other)` Compares this transaction to the specified object.
`int`	`hashCode()` Returns an integer hash code for this interval.
`boolean`	`intersects(Interval1D that)` Returns true if this interval intersects the specified interval.
`double`	`left()` Deprecated. Replaced by `min()`.
`double`	`length()` Returns the length of this interval.
`static void`	`main(String[] args)` Unit tests the `Interval1D` data type.
`double`	`max()` Returns the max endpoint of this interval.
`double`	`min()` Returns the min endpoint of this interval.
`double`	`right()` Deprecated. Replaced by `max()`.
`String`	`toString()` Returns a string representation of this interval.

Methods inherited from class Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - MIN_ENDPOINT_ORDER
```
public static final Comparator<Interval1D> MIN_ENDPOINT_ORDER
```
    Compares two intervals by min endpoint.
  - MAX_ENDPOINT_ORDER
```
public static final Comparator<Interval1D> MAX_ENDPOINT_ORDER
```
    Compares two intervals by max endpoint.
  - LENGTH_ORDER
```
public static final Comparator<Interval1D> LENGTH_ORDER
```
    Compares two intervals by length.
- Constructor Detail
  - Interval1D
```
public Interval1D(double min,
                  double max)
```
    Initializes a closed interval [min, max].
    
    Parameters:
    
    min - the smaller endpoint
    
    max - the larger endpoint
    
    Throws:
    
    IllegalArgumentException - if the min endpoint is greater than the max endpoint
    
    IllegalArgumentException - if either min or max is Double.NaN, Double.POSITIVE_INFINITY or Double.NEGATIVE_INFINITY
- Method Detail
  - left
```
@Deprecated
public double left()
```
    Deprecated. Replaced by min().
    
    Returns the left endpoint of this interval.
    
    Returns:
    
    the left endpoint of this interval
  - right
```
@Deprecated
public double right()
```
    Deprecated. Replaced by max().
    
    Returns the right endpoint of this interval.
    
    Returns:
    
    the right endpoint of this interval
  - min
```
public double min()
```
    Returns the min endpoint of this interval.
    
    Returns:
    
    the min endpoint of this interval
  - max
```
public double max()
```
    Returns the max endpoint of this interval.
    
    Returns:
    
    the max endpoint of this interval
  - intersects
```
public boolean intersects(Interval1D that)
```
    Returns true if this interval intersects the specified interval.
    
    Parameters:
    
    that - the other interval
    
    Returns:
    
    true if this interval intersects the argument interval; false otherwise
  - contains
```
public boolean contains(double x)
```
    Returns true if this interval contains the specified value.
    
    Parameters:
    
    x - the value
    
    Returns:
    
    true if this interval contains the value x; false otherwise
  - length
```
public double length()
```
    Returns the length of this interval.
    
    Returns:
    
    the length of this interval (max - min)
  - toString
```
public String toString()
```
    Returns a string representation of this interval.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a string representation of this interval in the form [min, max]
  - equals
```
public boolean equals(Object other)
```
    Compares this transaction to the specified object.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    other - the other interval
    
    Returns:
    
    true if this interval equals the other interval; false otherwise
  - hashCode
```
public int hashCode()
```
    Returns an integer hash code for this interval.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    an integer hash code for this interval
  - main
```
public static void main(String[] args)
```
    Unit tests the Interval1D data type.
    
    Parameters:
    
    args - the command-line arguments

Class Interval1D

Field Summary

Constructor Summary

Method Summary

Methods inherited from class Object

Field Detail

MIN_ENDPOINT_ORDER

MAX_ENDPOINT_ORDER

LENGTH_ORDER

Constructor Detail

Interval1D

Method Detail

left

right

min

max

intersects

contains

length

toString

equals

hashCode

main