我正在编写自己的hashmap实现，我正在使用horner规则作为散列算法。我这里有我的哈希算法

public int hashCode(K key) {
        int rank = 0;
        int hashCode = 0;
        char[] charArr = ((String) key).toCharArray();

        int exponent = (5 * (charArr.length - 1)) - 5;

        for(int i = 0; i <= charArr.length - 1; i++) {
            if(exponent >= 0) {
                rank = ((int) charArr[i] - 'A') + 1;
                hashCode += rank * (32 << exponent);
                exponent -= 5;
            }
            else{
                rank = ((int) charArr[i] - 'A') + 1;
                hashCode += rank * (32 >> 5);
            }
        }
        return hashCode;
    }

如果给的话 String userStr = "tea" 它将产生20641作为开始的哈希值。我之所以知道这一点，是因为在我取出的方法中，打印用于故障排除的语句。不过，当我稍后在驱动程序中接收哈希值时，会得到54465作为值。这不是双20641，所以它不只是运行两次。我不知道为什么会这样。我将检索方法附加到 HashTable class ，以及遇到问题的驱动程序部分。提前感谢您的帮助。

public V tableRetrieve(K searchKey) {
        if(!this.tableIsEmpty()) {
            int index = hashCode(searchKey) % table.length;
            ChainNode<K, V> currNode = table[index]; //getting the node based off the index 
            while(currNode != null) {
                if(currNode.getKey().equals(searchKey)) {
                    return currNode.getValue();  //found match return currNode value
                }
                else {
                    currNode = currNode.getNext(); //go onto next node within linked list
                }
            }
        }
        return null; //if nothing was found return null
    }

public static void retrieveHashCode(HashTable<String, Integer> myTable) {
        try {
            String key;
            System.out.print("Please enter a string key to retrieve the hashcode of it from the table\n> ");
            key = input.readLine();
            if(myTable.tableRetrieve(key.toUpperCase()) != null) {
                System.out.println("The hash code of " + key + " is " + myTable.hashCode(key) + ".");
            }
            else {
                System.out.println("The key " + key + " is not present within the table.");
            }
        }
        catch(InputMismatchException e) {
            System.out.println("Please enter a string value.");
        }
        catch(IOException e1) {
            System.out.println(e1.getMessage());
        }
    }