添加文本转换器代码

others/C++/text converter/src/CRC32Converter.cpp

@@ -0,0 +1,28 @@
+#include "../include/CRC32Converter.hpp"
+#include <string>
+#include <sstream>
+#include <iomanip>
+#include <cstdint>
+
+// CRC32多项式
+const uint32_t CRC32_POLY = 0xEDB88320;
+
+uint32_t computeCRC32(const std::string& input) {
+    uint32_t crc = 0xFFFFFFFF;
+    
+    for (char c : input) {
+        crc ^= static_cast<unsigned char>(c);
+        for (int i = 0; i < 8; i++) {
+            crc = (crc >> 1) ^ ((crc & 1) ? CRC32_POLY : 0);
+        }
+    }
+    
+    return ~crc;
+}
+
+std::string CRC32Converter::convert(const std::string& input) {
+    uint32_t crc = computeCRC32(input);
+    std::stringstream ss;
+    ss << std::hex << std::setw(8) << std::setfill('0') << crc;
+    return ss.str();
+}