徐子詮Java內建方法length(),charAt()

微軟VS Code編寫Java程式語言

public class Main { /*徐子詮w3school內建方法length,charAt*/ public static void main(String[] args) { String a = "ㄅㄆㄋ,ㄍㄎㄌ"; String b = ""; /*字串b初始值是空的*/ int c = a.length(); /*方法length() 得到字串長度*/ System.out.println("原來字串: " + a); System.out.println("字串長度: " + c); for (int i = 0; i < c; i++) b = a.charAt(i) + b; /*方法charAt()得到該位置的字元*/ System.out.println("反向字串: "+ b); } }