BigInteger.CompareTo Méthode

Définition

Compare la valeur de cette instance à une autre valeur et retourne un entier qui indique si la valeur de l'instance est inférieure, égale ou supérieure à l'autre valeur.Compares the value of this instance with another value and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the other value.

Surcharges

CompareTo(Object)

Compare cette instance à un objet spécifié et retourne un entier qui indique si la valeur de cette instance est inférieure, égale ou supérieure à la valeur de l'objet spécifié.Compares this instance to a specified object and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

CompareTo(UInt64)

Compare cette instance à un entier 64 bits non signé et retourne un entier qui indique si la valeur de cette instance est inférieure, égale ou supérieure à la valeur de l'entier 64 bits non signé.Compares this instance to an unsigned 64-bit integer and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the unsigned 64-bit integer.

CompareTo(Int64)

Compare cette instance à un entier 64 bits signé et retourne un entier qui indique si la valeur de cette instance est inférieure, égale ou supérieure à la valeur de l'entier 64 bits signé.Compares this instance to a signed 64-bit integer and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the signed 64-bit integer.

CompareTo(BigInteger)

Compare cette instance à un second BigInteger et retourne un entier qui indique si la valeur de l'instance est inférieure, égale ou supérieure à la valeur de l'objet spécifié.Compares this instance to a second BigInteger and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

CompareTo(Object)

Compare cette instance à un objet spécifié et retourne un entier qui indique si la valeur de cette instance est inférieure, égale ou supérieure à la valeur de l'objet spécifié.Compares this instance to a specified object and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

public:
 virtual int CompareTo(System::Object ^ obj);
public int CompareTo (object obj);
abstract member CompareTo : obj -> int
override this.CompareTo : obj -> int
Public Function CompareTo (obj As Object) As Integer

Paramètres

obj
Object

Objet à comparer.The object to compare.

Retours

Entier signé qui indique la relation de l'instance actuelle par rapport au paramètre obj, comme indiqué dans le tableau suivant.A signed integer that indicates the relationship of the current instance to the obj parameter, as shown in the following table.

Valeur de retourReturn value DescriptionDescription
Inférieure à zéroLess than zero L'instance actuelle est inférieure à obj.The current instance is less than obj.
ZéroZero L'instance actuelle est égale à obj.The current instance equals obj.
Supérieure à zéroGreater than zero L'instance actuelle est supérieure à obj ou le paramètre obj est null.The current instance is greater than obj, or the obj parameter is null.

Implémente

Exceptions

obj n’est pas un BigInteger.obj is not a BigInteger.

Exemples

L’exemple suivant appelle la méthode CompareTo(Object) pour comparer une valeur BigInteger à chaque élément d’un tableau d’objets :The following example calls the CompareTo(Object) method to compare a BigInteger value with each element in an object array:

object[] values = { BigInteger.Pow(Int64.MaxValue, 10), null, 
                    12.534, Int64.MaxValue, BigInteger.One };
BigInteger number = UInt64.MaxValue;

foreach (object value in values)
{
   try {
      Console.WriteLine("Comparing {0} with '{1}': {2}", number, value, 
                        number.CompareTo(value));
   }
   catch (ArgumentException) {
      Console.WriteLine("Unable to compare the {0} value {1} with a BigInteger.",
                        value.GetType().Name, value);
   }
}                                 
// The example displays the following output:
//    Comparing 18446744073709551615 with '4.4555084156466750133735972424E+189': -1
//    Comparing 18446744073709551615 with '': 1
//    Unable to compare the Double value 12.534 with a BigInteger.
//    Unable to compare the Int64 value 9223372036854775807 with a BigInteger.
//    Comparing 18446744073709551615 with '1': 1
Dim values() As Object = { BigInteger.Pow(Int64.MaxValue, 10), Nothing, 
                           12.534, Int64.MaxValue, BigInteger.One }
Dim number As BigInteger = UInt64.MaxValue

For Each value As Object In values
   Try
      Console.WriteLine("Comparing {0} with '{1}': {2}", number, value, 
                        number.CompareTo(value))
   Catch e As ArgumentException
      Console.WriteLine("Unable to compare the {0} value {1} with a BigInteger.",
                        value.GetType().Name, value)
   End Try                     
Next                                 
' The example displays the following output:
'    Comparing 18446744073709551615 with '4.4555084156466750133735972424E+189': -1
'    Comparing 18446744073709551615 with '': 1
'    Unable to compare the Double value 12.534 with a BigInteger.
'    Unable to compare the Int64 value 9223372036854775807 with a BigInteger.
'    Comparing 18446744073709551615 with '1': 1

Remarques

Cette surcharge de la méthode CompareTo implémente la méthode IComparable.CompareTo.This overload of the CompareTo method implements the IComparable.CompareTo method. Elle est utilisée par les objets de collection non génériques pour classer les éléments de la collection.It is used by non-generic collection objects to order the items in the collection.

Le paramètre obj doit avoir l’une des valeurs suivantes :The obj parameter must be one of the following:

  • Objet dont le type au moment de l’exécution est BigInteger.An object whose run-time type is BigInteger.

  • Variable Object dont la valeur est null.An Object variable whose value is null. Si la valeur du paramètre obj est null, la méthode retourne 1, ce qui indique que l’instance actuelle est supérieure à obj.If the value of the obj parameter is null, the method returns 1, which indicates that the current instance is greater than obj.

Voir aussi

CompareTo(UInt64)

Important

Cette API n’est pas conforme CLS.

Compare cette instance à un entier 64 bits non signé et retourne un entier qui indique si la valeur de cette instance est inférieure, égale ou supérieure à la valeur de l'entier 64 bits non signé.Compares this instance to an unsigned 64-bit integer and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the unsigned 64-bit integer.

public:
 int CompareTo(System::UInt64 other);
[System.CLSCompliant(false)]
public int CompareTo (ulong other);
member this.CompareTo : uint64 -> int
Public Function CompareTo (other As ULong) As Integer

Paramètres

other
UInt64

Entier 64 bits non signé à comparer.The unsigned 64-bit integer to compare.

Retours

Entier signé qui indique la valeur relative de cette instance et de other, comme indiqué dans le tableau suivant.A signed integer that indicates the relative value of this instance and other, as shown in the following table.

Valeur de retourReturn valueDescriptionDescription
Inférieure à zéroLess than zeroL'instance actuelle est inférieure à other.The current instance is less than other.
ZéroZeroL'instance actuelle est égale à other.The current instance equals other.
Supérieure à zéroGreater than zeroL'instance actuelle est supérieure à other.The current instance is greater than other.
Attributs

CompareTo(Int64)

Compare cette instance à un entier 64 bits signé et retourne un entier qui indique si la valeur de cette instance est inférieure, égale ou supérieure à la valeur de l'entier 64 bits signé.Compares this instance to a signed 64-bit integer and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the signed 64-bit integer.

public:
 int CompareTo(long other);
public int CompareTo (long other);
member this.CompareTo : int64 -> int
Public Function CompareTo (other As Long) As Integer

Paramètres

other
Int64

Entier 64 bits signé à comparer.The signed 64-bit integer to compare.

Retours

Valeur entière signée qui indique la relation de cette instance par rapport à other, comme indiqué dans le tableau suivant.A signed integer value that indicates the relationship of this instance to other, as shown in the following table.

Valeur de retourReturn value DescriptionDescription
Inférieure à zéroLess than zero L'instance actuelle est inférieure à other.The current instance is less than other.
ZéroZero L'instance actuelle est égale à other.The current instance equals other.
Supérieure à zéroGreater than zero L'instance actuelle est supérieure à other.The current instance is greater than other.

Exemples

L’exemple suivant illustre le résultat de l’appel de la méthode CompareTo(Int64) avec des valeurs intégrales.The following example illustrates the result of calling the CompareTo(Int64) method with integral values.

BigInteger bigIntValue = BigInteger.Parse("3221123045552");

byte byteValue = 16;
sbyte sbyteValue = -16;
short shortValue = 1233;      
ushort ushortValue = 1233;
int intValue = -12233;
uint uintValue = 12233;
long longValue = 12382222;
ulong ulongValue = 1238222;

Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, byteValue, 
                  bigIntValue.CompareTo(byteValue));
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, sbyteValue, 
                  bigIntValue.CompareTo(sbyteValue)); 
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, shortValue, 
                  bigIntValue.CompareTo(shortValue));
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, ushortValue, 
                  bigIntValue.CompareTo(ushortValue)); 
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, intValue, 
                  bigIntValue.CompareTo(intValue));
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, uintValue, 
                  bigIntValue.CompareTo(uintValue)); 
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, longValue, 
                  bigIntValue.CompareTo(longValue));
Console.WriteLine("Comparing {0} with {1}: {2}", 
                  bigIntValue, ulongValue, 
                  bigIntValue.CompareTo(ulongValue));
// The example displays the following output:
//       Comparing 3221123045552 with 16: 1
//       Comparing 3221123045552 with -16: 1
//       Comparing 3221123045552 with 1233: 1
//       Comparing 3221123045552 with 1233: 1
//       Comparing 3221123045552 with -12233: 1
//       Comparing 3221123045552 with 12233: 1
//       Comparing 3221123045552 with 12382222: 1
//       Comparing 3221123045552 with 1238222: 1
Dim bigIntValue As BigInteger = BigInteger.Parse("3221123045552")

Dim byteValue As Byte = 16
Dim sbyteValue As SByte = -16
Dim shortValue As Short = 1233      
Dim ushortValue As UShort = 1233
Dim intValue As Integer = -12233
Dim uintValue As UInteger = 12233
Dim longValue As Long = 12382222
Dim ulongValue As Integer = 1238222

Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, byteValue, _
                  bigIntValue.CompareTo(byteValue))
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, sbyteValue, _
                  bigIntValue.CompareTo(sbyteValue)) 
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, shortValue, _
                  bigIntValue.CompareTo(shortValue)) 
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, ushortValue, _
                  bigIntValue.CompareTo(ushortValue)) 
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, intValue, _
                  bigIntValue.CompareTo(intValue)) 
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, uintValue, _
                  bigIntValue.CompareTo(uintValue)) 
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, longValue, _
                  bigIntValue.CompareTo(longValue)) 
Console.WriteLine("Comparing {0} with {1}: {2}", _
                  bigIntValue, ulongValue, _
                  bigIntValue.CompareTo(ulongValue))
' The example displays the following output:
'       Comparing 3221123045552 with 16: 1
'       Comparing 3221123045552 with -16: 1
'       Comparing 3221123045552 with 1233: 1
'       Comparing 3221123045552 with 1233: 1
'       Comparing 3221123045552 with -12233: 1
'       Comparing 3221123045552 with 12233: 1
'       Comparing 3221123045552 with 12382222: 1
'       Comparing 3221123045552 with 1238222: 1

Remarques

Si other est une valeur Byte, Int16, Int32, SByte, UInt16ou UInt32, elle est implicitement convertie en une valeur Int64 lorsque la méthode CompareTo(Int64) est appelée.If other is a Byte, Int16, Int32, SByte, UInt16, or UInt32 value, it is implicitly converted to an Int64 value when the CompareTo(Int64) method is called.

CompareTo(BigInteger)

Compare cette instance à un second BigInteger et retourne un entier qui indique si la valeur de l'instance est inférieure, égale ou supérieure à la valeur de l'objet spécifié.Compares this instance to a second BigInteger and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

public:
 virtual int CompareTo(System::Numerics::BigInteger other);
public int CompareTo (System.Numerics.BigInteger other);
abstract member CompareTo : System.Numerics.BigInteger -> int
override this.CompareTo : System.Numerics.BigInteger -> int
Public Function CompareTo (other As BigInteger) As Integer

Paramètres

other
BigInteger

Objet à comparer.The object to compare.

Retours

Valeur entière signée qui indique la relation de cette instance par rapport à other, comme indiqué dans le tableau suivant.A signed integer value that indicates the relationship of this instance to other, as shown in the following table.

Valeur de retourReturn value DescriptionDescription
Inférieure à zéroLess than zero L'instance actuelle est inférieure à other.The current instance is less than other.
ZéroZero L'instance actuelle est égale à other.The current instance equals other.
Supérieure à zéroGreater than zero L'instance actuelle est supérieure à other.The current instance is greater than other.

Implémente

Exemples

L’exemple suivant illustre l’utilisation de la méthode CompareTo(BigInteger) pour ordonner une liste d’objets StarInfo.The following example illustrates the use of the CompareTo(BigInteger) method to order a list of StarInfo objects. Chaque objet StarInfo fournit des informations sur le nom d’une étoile et sa distance à partir de la terre en miles.Each StarInfo object provides information about a star's name and its distance from the Earth in miles. StarInfo implémente l’interface IComparable<T>, qui permet de trier les objets StarInfo à l’aide de classes de collection génériques.StarInfo implements the IComparable<T> interface, which enables StarInfo objects to be sorted by generic collection classes. Son implémentation de IComparable<T>.CompareTo encapsule simplement un appel à CompareTo(BigInteger).Its IComparable<T>.CompareTo implementation just wraps a call to CompareTo(BigInteger).

using System;
using System.Collections.Generic;
using System.Numerics;

public struct StarInfo : IComparable<StarInfo>
{
   // Define constructors.
   public StarInfo(string name, double lightYears)
   {
      this.Name = name;
      
      // Calculate distance in miles from light years.
      this.Distance = (BigInteger) Math.Round(lightYears * 5.88e12);
   }

   public StarInfo(string name, BigInteger distance)
   {
      this.Name = name;
      this.Distance = distance;
   }

   // Define public fields.
   public string Name;
   public BigInteger Distance;

   // Display name of star and its distance in parentheses.
   public override string ToString()
   {
      return String.Format("{0,-10} ({1:N0})", this.Name, this.Distance);
   }

   // Compare StarInfo objects by their distance from Earth.
   public int CompareTo(StarInfo other)
   {
      return this.Distance.CompareTo(other.Distance);
   }
}
Imports System.Collections.Generic
Imports System.Numerics

Public Structure StarInfo : Implements IComparable(Of StarInfo)
   ' Define constructors.
   Public Sub New(name As String, lightYears As Double)
      Me.Name = name
      ' Calculate distance in miles from light years.
      Me.Distance = CType(Math.Round(lightYears * 5.88e12), BigInteger)
   End Sub
   
   Public Sub New(name As String, distance As BigInteger)
      Me.Name = name
      Me.Distance = distance
   End Sub
   
   ' Define public fields.
   Public Name As String
   Public Distance As BigInteger

   ' Display name of star and its distance in parentheses.
   Public Overrides Function ToString() As String
      Return String.Format("{0,-10} ({1:N0})", Me.Name, Me.Distance)
   End Function

   ' Compare StarInfo objects by their distance from Earth.
   Public Function CompareTo(other As starInfo) As Integer _
                   Implements IComparable(Of StarInfo).CompareTo
      Return Me.Distance.CompareTo(other.Distance)
   End Function                
End Structure

Le code suivant instancie ensuite quatre StarInfo objets et les stocke dans un objet List<T> générique.The following code then instantiates four StarInfo objects and stores them in a generic List<T> object. Une fois la méthode List<T>.Sort appelée, les objets StarInfo sont affichés dans l’ordre de leur distance par rapport à la terre.After the List<T>.Sort method is called, StarInfo objects are displayed in order of their distance from the Earth.

public class Example
{
   public static void Main()
   {
      StarInfo star;
      List<StarInfo> stars = new List<StarInfo>();

      star = new StarInfo("Sirius", 8.6d);
      stars.Add(star);
      star = new StarInfo("Rigel", 1400d);
      stars.Add(star);
      star = new StarInfo("Castor", 49d);
      stars.Add(star);
      star = new StarInfo("Antares", 520d);
      stars.Add(star);

      stars.Sort();

      foreach (StarInfo sortedStar in stars)
         Console.WriteLine(sortedStar);
   }
}
// The example displays the following output:
//       Sirius     (50,568,000,000,000)
//       Castor     (288,120,000,000,000)
//       Antares    (3,057,600,000,000,000)
//       Rigel      (8,232,000,000,000,000)
Module Example
   Public Sub Main()
      Dim star As StarInfo
      Dim stars As New List(Of StarInfo)
      
      star = New StarInfo("Sirius", 8.6d)
      stars.Add(star)
      star = New StarInfo("Rigel", 1400d)
      stars.Add(star)
      star = New StarInfo("Castor", 49d)
      stars.Add(star)
      star = New StarInfo("Antares", 520d)
      stars.Add(star)
      
      stars.Sort()
      
      For Each star In stars
         Console.WriteLine(star)
      Next   
   End Sub
End Module
' The example displays the following output:
'       Sirius     (50,568,000,000,000)
'       Castor     (288,120,000,000,000)
'       Antares    (3,057,600,000,000,000)
'       Rigel      (8,232,000,000,000,000)

Remarques

Cette surcharge de la méthode CompareTo implémente la méthode IComparable<T>.CompareTo.This overload of the CompareTo method implements the IComparable<T>.CompareTo method. Elle est utilisée par les objets de collection générique pour classer les éléments de la collection.It is used by generic collection objects to order the items in the collection.

Voir aussi

S’applique à