劉哲瑋.HTML.CSS.JavaScript

w3schools public class Main { /*劉哲瑋2022.12.22上午w3school學java字串處理*/ public static void main(String[] args) { String a = "劉哲瑋哈喽哈哈哈哈";/*宣告字串型態a預設"自己打"*/ String b = ""; /*宣告字串型態b預設""*/ System.out.println(" 原來的字串: " + a); for (int i = 0; i

public class Main { public static void main(String[] args) { int x = 15; for (int i=0;i 0) { return k + sum(k - 1); } else { return 0; } } public static int factor(int k){ if (k > 0) { return k * factor(k-1); } else { return 1; } } }