java.lang.Object
- java.lang.Enum<Complexity>
- - com.igormaznitsa.meta.Complexity

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Complexity>
```
public enum Complexity
extends java.lang.Enum<Complexity>
```
Complexity constants. List was taken from the wiki page.

Since:

1.1.2

Enum Constant Summary

Enum Constants
Enum Constant	Description
`CONSTANT`	Constant value. Example: Determining if an integer (represented in binary) is even or odd.
`CUBIC`	Cubic.
`DOUBLE_EXPONENTIAL`	Double exponential.
`EXPONENTIAL`	Exponential.
`FACTORIAL`	Factorial.
`FRACTIONAL_POWER`	Fractional power.
`INVERSE_ACKERMANN`	Inverse Ackermann. Example: Amortized time per operation using a disjoint set.
`ITERATED_LOGARITHMIC`	Iterated logarithmic. Example: Distributed coloring of cycles.
`LINEAR`	Linear.
`LINEARITHMIC`	Lineqarithmic.
`LOG_LOGARITHMIC`	Log-logarithmic. Example: Amortized time per operation using a bounded priority queue.
`LOGARITHMIC`	Logarithmic. Example: Binary search.
`N_LOG_STAR_N`	n log star n.
`POLYLOGARITHMIC`	Polylogarithmic.
`POLYNOMIAL`	Polynomial.
`QUADRATIC`	Quadratic.
`QUASI_POLYNOMIAL`	Quasi-polinomial.
`SUB_EXPONENTIAL`	Sub-exponential.

Field Summary

Fields
Modifier and Type Field Description

private java.lang.String formula

Constructor Summary

Constructors
Modifier Constructor Description

private Complexity(java.lang.String formula)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`getFormula()`	Get the formula.
`java.lang.String`	`toString()`
`static Complexity`	`valueOf(java.lang.String name)`	Returns the enum constant of this type with the specified name.
`static Complexity[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - CONSTANT
```
public static final Complexity CONSTANT
```
    Constant value. Example: Determining if an integer (represented in binary) is even or odd.
    O(1)
    
    Since:
    
    1.1.2
  - INVERSE_ACKERMANN
```
public static final Complexity INVERSE_ACKERMANN
```
    Inverse Ackermann. Example: Amortized time per operation using a disjoint set.
    O(α(n))
    
    Since:
    
    1.1.2
  - ITERATED_LOGARITHMIC
```
public static final Complexity ITERATED_LOGARITHMIC
```
    Iterated logarithmic. Example: Distributed coloring of cycles.
    O(log* n)
    
    Since:
    
    1.1.2
  - LOG_LOGARITHMIC
```
public static final Complexity LOG_LOGARITHMIC
```
    Log-logarithmic. Example: Amortized time per operation using a bounded priority queue.
    O(log log n)
    
    Since:
    
    1.1.2
  - LOGARITHMIC
```
public static final Complexity LOGARITHMIC
```
    Logarithmic. Example: Binary search.
    O(log n)
    
    Since:
    
    1.1.2
  - POLYLOGARITHMIC
```
public static final Complexity POLYLOGARITHMIC
```
    Polylogarithmic.
    poly(log n)
    
    Since:
    
    1.1.2
  - FRACTIONAL_POWER
```
public static final Complexity FRACTIONAL_POWER
```
    Fractional power. Example: Searching in a kd-tree.
    O(n^c) where 0 < c < 1
    
    Since:
    
    1.1.2
  - LINEAR
```
public static final Complexity LINEAR
```
    Linear. Example: Finding the smallest or largest item in an unsorted array.
    O(n)
    
    Since:
    
    1.1.2
  - N_LOG_STAR_N
```
public static final Complexity N_LOG_STAR_N
```
    n log star n. Example: Seidel's polygon triangulation algorithm.
    O(n log* n)
    
    Since:
    
    1.1.2
  - LINEARITHMIC
```
public static final Complexity LINEARITHMIC
```
    Lineqarithmic. Example: Fastest possible comparison sort.
    O(n log n)
    
    Since:
    
    1.1.2
  - QUADRATIC
```
public static final Complexity QUADRATIC
```
    Quadratic. Example: Bubble sort; Insertion sort; Direct convolution.
    O(n²)
    
    Since:
    
    1.1.2
  - CUBIC
```
public static final Complexity CUBIC
```
    Cubic. Example: Naive multiplication of two n×n matrices. Calculating partial correlation.
    O(n³)
    
    Since:
    
    1.1.2
  - POLYNOMIAL
```
public static final Complexity POLYNOMIAL
```
    Polynomial. Example: Karmarkar's algorithm for linear programming; AKS primality test.
    2^{O(log n)} = poly(n)
    
    Since:
    
    1.1.2
  - QUASI_POLYNOMIAL
```
public static final Complexity QUASI_POLYNOMIAL
```
    Quasi-polinomial. Example: Best-known O(log2 n)-approximation algorithm for the directed Steiner tree problem.
    2^{poly(log n)}
    
    Since:
    
    1.1.2
  - SUB_EXPONENTIAL
```
public static final Complexity SUB_EXPONENTIAL
```
    Sub-exponential. Example: Assuming complexity theoretic conjectures, BPP is contained in SUBEXP.
    O(2^{n^ε}) for all ε > 0
    
    Since:
    
    1.1.2
  - EXPONENTIAL
```
public static final Complexity EXPONENTIAL
```
    Exponential. Example: Solving matrix chain multiplication via brute-force search.
    2^O(n)
    
    Since:
    
    1.1.2
  - FACTORIAL
```
public static final Complexity FACTORIAL
```
    Factorial. Example: Solving the traveling salesman problem via brute-force search.
    O(n!)
    
    Since:
    
    1.1.2
  - DOUBLE_EXPONENTIAL
```
public static final Complexity DOUBLE_EXPONENTIAL
```
    Double exponential. Example: Deciding the truth of a given statement in Presburger arithmetic.
    2^{2^poly(n)}
    
    Since:
    
    1.1.2
- Field Detail
  - formula
```
private final java.lang.String formula
```
- Constructor Detail
  - Complexity
```
private Complexity(java.lang.String formula)
```
- Method Detail
  - values
```
public static Complexity[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (Complexity c : Complexity.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static Complexity valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
    
    java.lang.NullPointerException - if the argument is null
  - getFormula
```
public java.lang.String getFormula()
```
    Get the formula.
    
    Returns:
    
    formula as string
    
    Since:
    
    1.1.2
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Enum<Complexity>

Enum Complexity

Enum Constant Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

CONSTANT

INVERSE_ACKERMANN

ITERATED_LOGARITHMIC

LOG_LOGARITHMIC

LOGARITHMIC

POLYLOGARITHMIC

FRACTIONAL_POWER

LINEAR

N_LOG_STAR_N

LINEARITHMIC

QUADRATIC

CUBIC

POLYNOMIAL

QUASI_POLYNOMIAL

SUB_EXPONENTIAL

EXPONENTIAL

FACTORIAL

DOUBLE_EXPONENTIAL

Field Detail

formula

Constructor Detail

Complexity

Method Detail

values

valueOf

getFormula

toString