Question

我正在制作一种将字符翻译成相应数字的方法，例如a = 1，b = 2 ......

我一直在接受关于我的字典数组声明的IDE。我已经阅读了文档，但仍然不知道如何改进它。

提前感谢您的所有回复！：d

编辑：格式化

public static int charNumTrans(char toBeTranslated){
    //Variable init
    int translated = 0;
    char guessedVariable;

    //Checking if between a and i
    if(toBeTranslated == 'a' || toBeTranslated == 'b' || toBeTranslated == 'c' || toBeTranslated == 'd' || toBeTranslated == 'e' 
    || toBeTranslated == 'f' || toBeTranslated == 'g' || toBeTranslated == 'h' || toBeTranslated == 'i'){ //Checking to see which array to use

        char[] dictionary;
        dictionary = new char {'0','.','1','a','2','b','3','c','4','d','5','e','6','f','7','g','8','h','9','i'};

        //chekcing between j and s
    }else if(toBeTranslated == 'j' ||toBeTranslated == 'k' ||toBeTranslated == 'l' ||toBeTranslated == 'm' ||toBeTranslated == 'n' ||
             toBeTranslated == 'o' ||toBeTranslated == 'p' ||toBeTranslated == 'q' ||toBeTranslated == 'r' || toBeTranslated == 's'){//Checking to see if in between 
        dictionary[10] = {'0','j','1','k','2','l','3','m','4','n','5','o','6','p','7','q','8','r','9','s'};
    }else{//Everything else will be in this data set.
        char[] dictionary = {'0','t','1','u','2','v','3','w','4','x','5','y','6','z'};
    }

    guessedVariable = dictionary[1];
    while(dictionary[guessedVariable] != toBeTranslated){
        guessedVariable +=2;
        }

    // Assigns letter minus one of array. e.g. b = dictionary[5]. This will then assign dictionary[4] to translated.
    translated = Character.getNumericValue(dictionary[guessedVariable-1]); 
    return translated;
}

Answer 1

更改 dictionary = new char {＆＃39; 0＆＃39;，＆＃39;。＆＃39;，＆＃39; 1＆＃39;，＆＃39; a＆＃39;，＆＃39; 2＆＃39; ＆＃39; b＆＃39;＆＃39 3＆＃39;＆＃39; C＆＃39;＆＃39; 4＆＃39;＆＃39; d＆＃39;，＆＃39; 5＆＃39;＆＃39; E＆＃39;＆＃39; 6＆＃39;＆＃39; F＆＃39;＆＃39 7＆＃39;＆＃39; G＆＃39 ;, ＆＃39; 8＆＃39;＆＃39; H＆＃39;＆＃39; 9＆＃39;＆＃39; I＆＃39;};

到

    dictionary = new char[] {'0','.','1','a','2','b','3','c','4','d','5','e','6','f','7','g','8','h','9','i'};

Answer 2

对于数组声明，当您将值分配给您正在创建的数组对象时，您错过了[] - 例如，将声明更改为：

char[] dictionary = new char[]{'0','t','1','u','2','v','3','w','4','x','5','y','6','z'};

另外，如果您尝试将字母转换为数字等值，我建议您将已传递给函数的char转换为int，然后减去61从这个价值？原因是61对应于角色的位置＆＃39; a ＆＃39;在Unicode字符表上，将极大地简化为传入的字母分配数字。

Answer 3

首先，您没有在if语句之外初始化数组，这意味着您的代码最终无法调用＆＃34;字典＆＃34;阵列。其次，在场景中使用数组的问题是你有不同大小的数组。第三，正如人们所指出的那样，就初始化数组的方式而言，你需要创建一个适合你的数据集的新对象，例如： new char[] {...}。

要完全解决您的问题，您可能需要考虑这样的事情（我已经使用相同的方法以最简单的方式初始化所有数组以避免混淆）：

public static int charNumTrans(char toBeTranslated){
    //Variable init
    int translated = 0;
    char guessedVariable;

    //Checking if between a and i
    if(toBeTranslated == 'a' || toBeTranslated == 'b' || toBeTranslated == 'c' || toBeTranslated == 'd' || toBeTranslated == 'e' 
|| toBeTranslated == 'f' || toBeTranslated == 'g' || toBeTranslated == 'h' || toBeTranslated == 'i'){ //Checking to see which array to use

        char[] dictionary = {'0','.','1','a','2','b','3','c','4','d','5','e','6','f','7','g','8','h','9','i'};
        return findValue(dictionary);

    //checking between j and s
    }else if(toBeTranslated == 'j' ||toBeTranslated == 'k' ||toBeTranslated == 'l' ||toBeTranslated == 'm' ||toBeTranslated == 'n' ||
         toBeTranslated == 'o' ||toBeTranslated == 'p' ||toBeTranslated == 'q' ||toBeTranslated == 'r' || toBeTranslated == 's'){//Checking to see if in between 

        char[] dictionary = {'0','j','1','k','2','l','3','m','4','n','5','o','6','p','7','q','8','r','9','s'};
        return findValue(dictionary);

    }else{//Everything else will be in this data set.

        char[] dictionary = {'0','t','1','u','2','v','3','w','4','x','5','y','6','z'};
        return findValue(dictionary);

    }

}

public static int findValue(char[] dictionary){
    guessedVariable = dictionary[1];
    while(dictionary[guessedVariable] != toBeTranslated){
         guessedVariable +=2;
    }

    // Assigns letter minus one of array. e.g. b = dictionary[5]. This will then assign dictionary[4] to translated.
    translated = Character.getNumericValue(dictionary[guessedVariable-1]); 
    return translated;
}

Java字符数组错误

3 个答案: