UnsignedInts (Guava: Google Core Libraries for Java 23.4-jre API)

java.lang.Object
- com.google.common.primitives.UnsignedInts

```
@Beta
 @GwtCompatible
public final class UnsignedInts
extends Object
```
Static utility methods pertaining to int primitives that interpret values as unsigned (that is, any negative value x is treated as the positive value 2^32 + x). The methods for which signedness is not an issue are in Ints, as well as signed versions of methods for which signedness is an issue.
In addition, this class provides several static methods for converting an int to a String and a String to an int that treat the int as an unsigned number.
Users of these utilities must be extremely careful not to mix up signed and unsigned int values. When possible, it is recommended that the UnsignedInteger wrapper class be used, at a small efficiency penalty, to enforce the distinction in the type system.
See the Guava User Guide article on unsigned primitive utilities.

Since:

11.0

Author:

Louis Wasserman

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`checkedCast(long value)` Returns the `int` value that, when treated as unsigned, is equal to `value`, if possible.
`static int`	`compare(int a, int b)` Compares the two specified `int` values, treating them as unsigned values between `0` and `2^32 - 1` inclusive.
`static int`	`decode(String stringValue)` Returns the unsigned `int` value represented by the given string.
`static int`	`divide(int dividend, int divisor)` Returns dividend / divisor, where the dividend and divisor are treated as unsigned 32-bit quantities.
`static String`	`join(String separator, int... array)` Returns a string containing the supplied unsigned `int` values separated by `separator`.
`static Comparator<int[]>`	`lexicographicalComparator()` Returns a comparator that compares two arrays of unsigned `int` values lexicographically.
`static int`	`max(int... array)` Returns the greatest value present in `array`, treating values as unsigned.
`static int`	`min(int... array)` Returns the least value present in `array`, treating values as unsigned.
`static int`	`parseUnsignedInt(String s)` Returns the unsigned `int` value represented by the given decimal string.
`static int`	`parseUnsignedInt(String string, int radix)` Returns the unsigned `int` value represented by a string with the given radix.
`static int`	`remainder(int dividend, int divisor)` Returns dividend % divisor, where the dividend and divisor are treated as unsigned 32-bit quantities.
`static int`	`saturatedCast(long value)` Returns the `int` value that, when treated as unsigned, is nearest in value to `value`.
`static void`	`sort(int[] array)` Sorts the array, treating its elements as unsigned 32-bit integers.
`static void`	`sort(int[] array, int fromIndex, int toIndex)` Sorts the array between `fromIndex` inclusive and `toIndex` exclusive, treating its elements as unsigned 32-bit integers.
`static void`	`sortDescending(int[] array)` Sorts the elements of `array` in descending order, interpreting them as unsigned 32-bit integers.
`static void`	`sortDescending(int[] array, int fromIndex, int toIndex)` Sorts the elements of `array` between `fromIndex` inclusive and `toIndex` exclusive in descending order, interpreting them as unsigned 32-bit integers.
`static long`	`toLong(int value)` Returns the value of the given `int` as a `long`, when treated as unsigned.
`static String`	`toString(int x)` Returns a string representation of x, where x is treated as unsigned.
`static String`	`toString(int x, int radix)` Returns a string representation of `x` for the given radix, where `x` is treated as unsigned.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - compare
```
public static int compare(int a,
                          int b)
```
    Compares the two specified int values, treating them as unsigned values between 0 and 2^32 - 1 inclusive.
    Java 8 users: use Integer.compareUnsigned(int, int) instead.
    
    Parameters:
    
    a - the first unsigned int to compare
    
    b - the second unsigned int to compare
    
    Returns:
    
    a negative value if a is less than b; a positive value if a is greater than b; or zero if they are equal
  - toLong
```
public static long toLong(int value)
```
    Returns the value of the given int as a long, when treated as unsigned.
    Java 8 users: use Integer.toUnsignedLong(int) instead.
  - checkedCast
```
public static int checkedCast(long value)
```
    Returns the int value that, when treated as unsigned, is equal to value, if possible.
    
    Parameters:
    
    value - a value between 0 and 2³²-1 inclusive
    
    Returns:
    
    the int value that, when treated as unsigned, equals value
    
    Throws:
    
    IllegalArgumentException - if value is negative or greater than or equal to 2³²
    
    Since:
    
    21.0
  - saturatedCast
```
public static int saturatedCast(long value)
```
    Returns the int value that, when treated as unsigned, is nearest in value to value.
    
    Parameters:
    
    value - any long value
    
    Returns:
    
    2^32 - 1 if value >= 2^32, 0 if value <= 0, and value cast to int otherwise
    
    Since:
    
    21.0
  - min
```
public static int min(int... array)
```
    Returns the least value present in array, treating values as unsigned.
    
    Parameters:
    
    array - a nonempty array of unsigned int values
    
    Returns:
    
    the value present in array that is less than or equal to every other value in the array according to compare(int, int)
    
    Throws:
    
    IllegalArgumentException - if array is empty
  - max
```
public static int max(int... array)
```
    Returns the greatest value present in array, treating values as unsigned.
    
    Parameters:
    
    array - a nonempty array of unsigned int values
    
    Returns:
    
    the value present in array that is greater than or equal to every other value in the array according to compare(int, int)
    
    Throws:
    
    IllegalArgumentException - if array is empty
  - join
```
public static String join(String separator,
                          int... array)
```
    Returns a string containing the supplied unsigned int values separated by separator. For example, join("-", 1, 2, 3) returns the string "1-2-3".
    
    Parameters:
    
    separator - the text that should appear between consecutive values in the resulting string (but not at the start or end)
    
    array - an array of unsigned int values, possibly empty
  - lexicographicalComparator
```
public static Comparator<int[]> lexicographicalComparator()
```
    Returns a comparator that compares two arrays of unsigned int values lexicographically. That is, it compares, using compare(int, int)), the first pair of values that follow any common prefix, or when one array is a prefix of the other, treats the shorter array as the lesser. For example, [] < [1] < [1, 2] < [2] < [1 << 31].
    The returned comparator is inconsistent with Object.equals(Object) (since arrays support only identity equality), but it is consistent with Arrays.equals(int[], int[]).
  - sort
```
public static void sort(int[] array)
```
    Sorts the array, treating its elements as unsigned 32-bit integers.
    
    Since:
    
    23.1
  - sort
```
public static void sort(int[] array,
                        int fromIndex,
                        int toIndex)
```
    Sorts the array between fromIndex inclusive and toIndex exclusive, treating its elements as unsigned 32-bit integers.
    
    Since:
    
    23.1
  - sortDescending
```
public static void sortDescending(int[] array)
```
    Sorts the elements of array in descending order, interpreting them as unsigned 32-bit integers.
    
    Since:
    
    23.1
  - sortDescending
```
public static void sortDescending(int[] array,
                                  int fromIndex,
                                  int toIndex)
```
    Sorts the elements of array between fromIndex inclusive and toIndex exclusive in descending order, interpreting them as unsigned 32-bit integers.
    
    Since:
    
    23.1
  - divide
```
public static int divide(int dividend,
                         int divisor)
```
    Returns dividend / divisor, where the dividend and divisor are treated as unsigned 32-bit quantities.
    Java 8 users: use Integer.divideUnsigned(int, int) instead.
    
    Parameters:
    
    dividend - the dividend (numerator)
    
    divisor - the divisor (denominator)
    
    Throws:
    
    ArithmeticException - if divisor is 0
  - remainder
```
public static int remainder(int dividend,
                            int divisor)
```
    Returns dividend % divisor, where the dividend and divisor are treated as unsigned 32-bit quantities.
    Java 8 users: use Integer.remainderUnsigned(int, int) instead.
    
    Parameters:
    
    dividend - the dividend (numerator)
    
    divisor - the divisor (denominator)
    
    Throws:
    
    ArithmeticException - if divisor is 0
  - decode
```
public static int decode(String stringValue)
```
    Returns the unsigned int value represented by the given string. Accepts a decimal, hexadecimal, or octal number given by specifying the following prefix:
    - 0xHexDigits
    - 0XHexDigits
    - #HexDigits
    - 0OctalDigits
    Throws:
    
    NumberFormatException - if the string does not contain a valid unsigned int value
    
    Since:
    
    13.0
  - parseUnsignedInt
```
public static int parseUnsignedInt(String s)
```
    Returns the unsigned int value represented by the given decimal string.
    Java 8 users: use Integer.parseUnsignedInt(String) instead.
    
    Throws:
    
    NumberFormatException - if the string does not contain a valid unsigned int value
    
    NullPointerException - if s is null (in contrast to Integer.parseInt(String))
  - parseUnsignedInt
```
public static int parseUnsignedInt(String string,
                                   int radix)
```
    Returns the unsigned int value represented by a string with the given radix.
    Java 8 users: use Integer.parseUnsignedInt(String, int) instead.
    
    Parameters:
    
    string - the string containing the unsigned integer representation to be parsed.
    
    radix - the radix to use while parsing s; must be between Character.MIN_RADIX and Character.MAX_RADIX.
    
    Throws:
    
    NumberFormatException - if the string does not contain a valid unsigned int, or if supplied radix is invalid.
    
    NullPointerException - if s is null (in contrast to Integer.parseInt(String))
  - toString
```
public static String toString(int x)
```
    Returns a string representation of x, where x is treated as unsigned.
    Java 8 users: use Integer.toUnsignedString(int) instead.
  - toString
```
public static String toString(int x,
                              int radix)
```
    Returns a string representation of x for the given radix, where x is treated as unsigned.
    Java 8 users: use Integer.toUnsignedString(int, int) instead.
    
    Parameters:
    
    x - the value to convert to a string.
    
    radix - the radix to use while working with x
    
    Throws:
    
    IllegalArgumentException - if radix is not between Character.MIN_RADIX and Character.MAX_RADIX.

Class UnsignedInts

Method Summary

Methods inherited from class java.lang.Object

Method Detail

compare

toLong

checkedCast

saturatedCast

min

max

join

lexicographicalComparator

sort

sort

sortDescending

sortDescending

divide

remainder

decode

parseUnsignedInt

parseUnsignedInt

toString

toString