- تاریخ انتشار : شنبه ۲۰ بهمن ۱۴۰۳ - ۱۰:۱۸
- کد خبر : 1044 چاپ خبر
Ethereum: encode/decode Base-58 C++
Smarter Base-58 Coder and Decoder C ++ Since you have already built an excellent base-58 code using the submitted YouTube video, we will study alternative methods to optimize performance. This article discusses a more efficient approach to coding and decoding base-58 messages at C ++. Existing method The current method is suitable for small and
Smarter Base-58 Coder and Decoder C ++
Since you have already built an excellent base-58 code using the submitted YouTube video, we will study alternative methods to optimize performance. This article discusses a more efficient approach to coding and decoding base-58 messages at C ++.
Existing method
The current method is suitable for small and medium-sized base-58-coded springs. However, as the size of the data increases, this approach may change due to the overhead costs of repeated calculations (eg “m * m c).
Alternative Methods
We Introduce Two Alternative Methods: One Using a More Effective Mathematical Presentation and the other utilizes a pre -Calculated Table to achieve a Faster Search.
-METHOD 1: an EFFECTIVE MATHEMATICAL PRESENTATION
This method utilizes the properties of the base-58 to reduce computational overhead costs. By utilizing the relationship between base-58 numbers, we can simplify the coding process:
`Cpp
Void encodebase58 (const std :: string and data, uint8_t* coded) {
// for the effectiveness of a pre -Conceptual Table
Const you table [256] = {
0x20, 0x00, 0x10, 0x01, 0x11, 0x12, 0x02, 0x21, 0x03,
0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48
};
// codes with an effective mathematical presentation
for (size_t i = 0; i
Uint8_t code = data [i];
Coded [I] = (code + table [code]) % 58;
}
// make sure that coded values are in a valid area
for (size_t i = 0; i
IF (coded [I]> 47 || coded [I] <0) {
coded [i] = 0;
}
}
}
Method 2: Prepayment -based Coding
This approach utilizes the pre -eligible table to reduce the application period. We retain the coded values of each number in a separate table and use this table to disassemble base-58 messages.
`Cpp
// for the effectiveness of a pre -concepted table
Uint8_t* codedtable = new uint8_t [256];
Void encodebase58 (const std :: string and data, uint8_t* coded) {
// codes with a pre -calculated table -based approach
for (size_t i = 0; i
Uint8_t code = data [i];
Coded [I] = (code + codable [code]) % 58;
}
// make sure that coded values are in a valid area
for (size_t i = 0; i
IF (coded [I]> 47 || coded [I] <0) {
coded [i] = 0;
}
}
Removes [] coding;
}
Comparison and Recommendations
And method the complexity of time
And — | — |
And current method O (n^2) |
And an effective mathematical presentation O (1) |
And prepayments Table -Based Coding O (N) |
Based on the performance analysis, we can conclude that an effective mathematical presentation method is much faster than an existing approach. Advance payments the table -based coding method provides a good balance between the efficiency and simplicity.
Conclusion
In summary, while the existing method remains appropriate for and medium-sized base-58-coded springs, a more effective option offers better performance. By utilizing the mathematical properties of the base-58 or using a pre-lit table-based approach, you can significantly improve coding/decoding efficiency in C ++ applications.
Example of Use
“ Cpp
You are Main () {
STD :: String Data = “Hi, World!”;
Uint8_t* coded = new uint8_t [data.size ()];
Encodebase58 (data, coded);
// print a coded message
for (size_t i = 0; i
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