苦苦挣扎着大写或小写

Question

import java.util.Scanner;

public class ShoutandWhisper {

    public static void main(String[] args) 
    {
        //defining the variables
        String word, word1;
        //Input
        Scanner kb = new Scanner(System.in);
        System.out.print("Give me a word that has 7 letters > ");
        word = kb.nextLine();
        word1 = word.toUpperCase();
        System.out.println("I shout " + word1 + " when I'm excited, but i whisper " + word + " when i can't disturb the neigbours.");
        char achar = word.charAt(0);
        char bchar = word.charAt(1);
        char cchar = word.charAt(2);
        char dchar = word.charAt(3);
        char echar = word.charAt(4);
        char fchar = word.charAt(5);
        char gchar = word.charAt(6);
        //Changing to uppercase
        char Bchar = Character.toUpperCase(bchar);
        char Dchar = Character.toUpperCase(dchar);
        char Fchar = Character.toUpperCase(fchar);
        System.out.println("And the mixed up word is " + achar+Bchar+cchar+Dchar+echar+Fchar+gchar);
    }

}

现在代码确实有效,但是有一种更简单的方法可以在不使用For计数器的情况下生成交替的大写或小写输出吗？重写整个"更新"的变量是一个等待发生的事故.特别是对我.

我试图强迫它,因为我正在逐字逐句地选择,我无法做到.

主要目标是呼喊或低语,然后使用第二个字母的交替大写字母对单词进行排序.

Answer 1

您可以将单词转换为char数组,并使用for循环来交替大写和小写:

char [] c = word.toLowerCase().toCharArray();

for(int i = 1; i < c.length; i = i+2){
    c[i] = Character.toUpperCase(c[i]);
}

然后String用这个char数组构造一个new (使用构造函数String(char[] value)),你就会得到你的话.