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How Can I Efficiently Perform Base Conversions in .NET?

Mary-Kate Olsen
Release: 2025-01-28 10:26:14
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How Can I Efficiently Perform Base Conversions in .NET?

.NET high -efficiency advancement conversion

When dealing with different progressive values, advance transformation is often required. Although the built -in method supports limited transformations, the .NET lacks a general -purpose transformation mechanism.

Custom conversion function Convert.ToString

In order to realize the transformation of any advancement, it can realize its own practical function. A simple method is toely divide the numbers in the goal and accumulate the remaining numbers in the opposite order:

Performance optimization

public static string IntToString(int value, char[] baseChars)
{
    string result = string.Empty;
    int targetBase = baseChars.Length;

    do
    {
        result = baseChars[value % targetBase] + result;
        value = value / targetBase;
    } 
    while (value > 0);

    return result;
}
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For large numbers, the above method can be optimized by using an array buffer instead of the string connection:

This method is much faster for large numbers (especially those who have produced longer representations in the target base). However, for one digit, the original method may be faster.

<自> Use custom foundation character

public static string IntToStringFast(int value, char[] baseChars)
{
    // 基数为2且值为int.MaxValue时的最坏情况缓冲区大小
    int i = 32;
    char[] buffer = new char[i];
    int targetBase = baseChars.Length;

    do
    {
        buffer[--i] = baseChars[value % targetBase];
        value = value / targetBase;
    }
    while (value > 0);

    return new string(buffer, i, 32 - i);
}
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and IntToString Allow you to specify any array of any base character. This can use custom bases, such as hexadic (base 26, use of uppercase and lowercase letters) or sixty -in -proof (base 60).

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