程式設計

w3schools練習截圖 w3schools程式碼 #郭怡吟集合set{},元組tuple(), 串列或清單list[], #字典dict{key:value,鍵:值} d = {2330:"台積電",2317:"鴻海",2454:"聯發科",6505:"台塑化"} s = {"台積電", "鴻海", "聯發科","台塑化"} t = ("台積電", "鴻海", "聯發科","台塑化") list = ["台積電", "鴻海", "聯發科","台塑化"] print(type(d),type(s),type(d),type(list)) print("台灣市場價值最大三家公司集合set列出") print(s) #練習迴圈 for a in s: print(a) """整個區塊註解前後加上連續三個引號 # Note: the set list is unordered, meaning: the items will appear in a random order. # Refresh this page to see the change in the result. """ w3schools集合方法 Python has a set of built-in methods that you can use on sets. Method Description add() Adds an element to the set clear() Removes all the elements from the set copy() Returns a copy of the set difference() Returns a set containing the difference between two or more sets diff...

w3schools 程式碼 #郭怡吟strings可以用單引雙引只要對稱 b = '狗吃屎,兔吃菜,貓抓鼠,郭怡吟' # 0 1 23 4 5 678 9 10,11,12, print('字串長度' + str(len(b))) #len函數 字串長度 輸出 整數 #str函數 轉成字串 這樣才能串接 print(b[-5:-2]) #練習字串格式format quantity = "精華下午茶" itemno = 5 price = "郭怡吟" myorder = "我要吃 {} 吃幾個 {}，和 {} 誰一起吃" print(myorder.format(quantity, itemno, price))

程式碼 #郭怡吟的第一個python程式2023/2/20 print("你在跟我哈啦嗎?") #python輸出比Java簡單太多 a = "你在跟我哈啦,狗吃屎" #python指令結尾不需要;分號 b = '貓抓鼠,師父開撈駛來時' #phthon字串單引雙引號都可 print(a) print(b) c = a[1:5:] #取字串a的第1到5(不含),從0開始 print(c) c = a[::-1] print(c) a = input("自己輸入字串:") print("你輸入:"+a) print("反過來:"+a[::-1])

JavaScript輸出與輸入 輸入字串: JavaScript輸出與輸入的程式碼 <p>輸入字串:<input type="text" len="50" id="in"></p> <p><input type="button" value="執行JavaScript" onclick="f()"></p> <p id="out"></p> <script> function f(){   var a = document.getElementById("in").value;/*取得id=in的文字*/   var b = "原字串: "+a+"<br>長度是:"+a.length+"<br>反串是: ";   var c = "";   for (var i = 0; i < a.length; i++)      c = a.slice(i,i+1) + c;    b = b +"<font size=7>" +c + "</font>";   document.getElementById("out").innerHTML = b;/*輸出html指令*/ } </script> 上課影片

Java程式碼 import java.util.Scanner; /*開啟套件package util=utility用途,Scanner掃描器*/ /*郭怡吟utility industry=公用事業產業,電力,自來水,效用=utility */ class MyClass { public static void main(String[] args) { String a, b=""; /*定義字串a,b*/ Scanner myObj = new Scanner(System.in); //建構編輯物件 System.out.print("輸入: "); a = myObj.nextLine(); /*輸入文字nextLine到變數a */ System.out.println("長度: " + a.length());/*輸出字串長度length()*/ for (int i = 0; i

Java資料型態 原型primitive 位元數byte 短整數short 整數int 長整數long 浮點數float 倍精數double 布林數boolean 字元char 非原型non-primitive 字串String 陣列Arrays 類別Classes 介面Interface 其他