如何交换字符串数组中的值？

Question

我想把data[0] 换成data[2]..

示例输入：hitman, 222, black, white

输出：222, hitman, black, white

public void display() {
    try {
        BufferedReader br = new BufferedReader(new FileReader("Database.txt"));
        String s = "";
        while ((s = br.readLine()) != null) {
            String data[] = new String[4];
            data = s.split(",");
            for (int i = 0; i < 4; i++) {
                int temp = 0;
                data[i] = data[i].replaceAll(", $", "");
                /// iwant to swap data[0] and data[1] in here
                System.out.print(data[i] + " ");
            }
            System.out.println();
        }
    } catch (Exception e) {
    }
}

Answer 1

很简单，只需将要替换的值存储在字符串中并重新赋值即可。

String[] data = {"hitman", "222", "black", "white"};
String tmp = data[0];
data[0] = data[1];
data[1] = tmp;

for (String i : data) {
    System.out.println(i);
}

输出：

222
hitman
black
white