C# Byte.GetHashCode()用法及代碼示例

此方法用於返回給定字節的哈希碼。

用法:

public override int GetHashCode ();

返回值：此方法返回當前字節的哈希碼。

以下示例程序旨在說明Byte.GetHashCode()方法的使用：

示例1:

// C# program to demonstrate 
// Byte.GetHashCode Method  
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // Declaring and initalizing val 
        long val = 83935; 
  
        // converting long array into bytes 
        byte[] bytes = BitConverter.GetBytes(val); 
  
        // getting hashcode 
        // using GetHashCode() method 
        for (int i = 0; i < bytes.Length; i++) { 
  
            // getting hash code of a single byte 
            int j = bytes[i].GetHashCode(); 
  
            Console.WriteLine("Hashcode: {0}", j); 
        } 
    } 
}

輸出：

Hashcode: 223
Hashcode: 71
Hashcode: 1
Hashcode: 0
Hashcode: 0
Hashcode: 0
Hashcode: 0
Hashcode: 0

示例2:

// C# program to demonstrate 
// Byte.GetHashCode Method  
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        check((long)8543, "long"); 
        check((int)8543, "int"); 
        check((byte)85, "byte"); 
    } 
  
    // Defining the check method 
    public static void check(long val, string name) 
    { 
  
        // converting long array into bytes 
        byte[] bytes = BitConverter.GetBytes(val); 
  
        // getting hashcode 
        // using GetHashCode() method 
        Console.Write(name + " hashcode:- "); 
        for (int i = 0; i < bytes.Length; i++) { 
  
            // getting hash code of a single byte 
            int j = bytes[i].GetHashCode(); 
            Console.Write("{0} ", j); 
        } 
        Console.WriteLine(""); 
    } 
  
    // Defining the check method 
    public static void check(int val, string name) 
    { 
  
        // converting long array into bytes 
        byte[] bytes = BitConverter.GetBytes(val); 
  
        // getting hashcode 
        // using GetHashCode() method 
        Console.Write(name + " Hashcode: "); 
        for (int i = 0; i < bytes.Length; i++) { 
  
            // getting hash code of a single byte 
            int j = bytes[i].GetHashCode(); 
            Console.Write("{0} ", j); 
        } 
        Console.WriteLine(""); 
    } 
  
    // Defining the check method 
    public static void check(byte val, string name) 
    { 
  
        // converting long array into bytes 
        byte[] bytes = BitConverter.GetBytes(val); 
  
        // getting hashcode 
        // using GetHashCode() method 
        Console.Write(name + " hashcode:- "); 
        for (int i = 0; i < bytes.Length; i++) { 
  
            // getting hash code of a single byte 
            int j = bytes[i].GetHashCode(); 
            Console.Write("{0} ", j); 
        } 
        Console.WriteLine(""); 
    } 
}

輸出：

long hashcode:- 95 33 0 0 0 0 0 0 
int Hashcode: 95 33 0 0 
byte hashcode:- 85 0

參考：

https://docs.microsoft.com/en-us/dotnet/api/system.byte.gethashcode?view=netframework-4.7.2

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