java - 使用 for 循环检查数组

Question

我正在尝试使用 for 循环来检查数组中的每个字符并打印该字符、它在数组中的位置以及它是什么类型的字符(元音、辅音等)。到目前为止我有这个:

char[] myName = new char[] {'J', 'o', 'h', 'n', ' ', 'D', 'o', 'e'};

         System.out.print("\nMy name is: ");

            for(int index=0; index < myName.length ; index++)
            System.out.print(myName[index]);

            for(char c : myName) {
            if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u')
            {
                System.out.println("The character located at position is a vowel.");
            }
            else if (c == 'j' || c == 'h' || c == 'n' || c == 'd')
            {
                System.out.println("The character located at position is a consonant.");
            }
            else if (c == ' ')
            {
                System.out.println("The character located at position is a space.");
            }

如何打印字符的位置(即“位于 x 位置的字符 x 是元音字母。”)

Answer 1

您走在正确的轨道上。您的循环没问题，但如果您实际上不需要索引，请尝试使用 foreach 语法，如下所示:

 char[] myName = new char[] {'J', 'o', 'h', 'n', ' ', 'D', 'o', 'e'};

 System.out.print("\nMy name is: ");

 for(char c : myName) {
     System.out.print(c); 
 }

现在添加一些逻辑:

 int i = 0;
 for(char c : myName) {
     i++;
     // Is the char a vowel?
     if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') {
         // do something - eg print in uppercase
         System.out.print(Character.toUpperCase(c) + " at position " + i);
     } else {
         // do something else - eg print in lowercase
         System.out.print(Character.toLowerCase(c) + " at position " + i);
     }
 }

你必须弄清楚你想在这里做什么。现在去做:)

已编辑:显示位置的使用，这有点笨拙，但仍然比标准的 for 循环代码少