refactor: edit function signatures and rewrite a few code sections

src/controller/model_utils/hamming_code_seven_four.rs

@@ -40,8 +40,9 @@ pub fn hamming(raw_input: String, mode: HammingMode) -> Result<String> {
     }
 }
 
-pub fn hamming_encrypt_data(data: &Vec<u8>, result_string: &mut String, length_of_code: usize) {
+pub fn hamming_encrypt_data(data: &[u8], length_of_code: usize) -> String {
     let mut i: usize = length_of_code;
+    let mut result = String::new();
 
     while i <= data.len() {
         let data_bits: &[u8] = &data[i - length_of_code..i];
@@ -50,17 +51,23 @@ pub fn hamming_encrypt_data(data: &Vec<u8>, result_string: &mut String, length_o
             data_bits[0] ^ data_bits[2] ^ data_bits[3],
             data_bits[1] ^ data_bits[2] ^ data_bits[3],
         );
-        result_string.push_str(&*format!(
+
+        result.push_str(
+            format!(
                 "{check_bit_1}{}{check_bit_2}{}{check_bit_3}{}{} ",
                 data_bits[0], data_bits[1], data_bits[2], data_bits[3]
-        ));
+            )
+            .as_str(),
+        );
         i += length_of_code;
     }
+
+    result
 }
 
-pub fn hamming_decrypt_data(data: &Vec<u8>, result_string: &mut String, length_of_code: usize) {
+pub fn hamming_decrypt_data(data: &[u8], length_of_code: usize) -> String {
     let mut general_length: usize = length_of_code;
-
+    let mut result = String::new();
 
     let mut errors: String = String::new();
 
@@ -77,7 +84,7 @@ pub fn hamming_decrypt_data(data: &Vec<u8>, result_string: &mut String, length_o
             general_length += length_of_code;
             continue;
         } else {
-            let error_position: &usize = syndromes
+            let error_position: &usize = SYNDROMES
                 .iter()
                 .find(move |&(&_error_position, &error)| error == checked_bits)
                 .unwrap()
@@ -113,11 +120,11 @@ pub fn hamming_decrypt_data(data: &Vec<u8>, result_string: &mut String, length_o
 
     if !data.is_empty() {
         if errors.is_empty() {
-            result_string.push_str("Все коды корректны.");
+            result.push_str("Все коды корректны.");
         } else {
-            result_string.push_str(errors.as_str());
-        }
-    } else {
-        result_string.push_str("Введите код для проверки.")
+            result.push_str(errors.as_str());
         }
     }
+
+    result
+}