w3schools截圖 w3schools程式碼 #劉任昌 字典 keys:value市場價值最大的公司 a = { 2330: "台積電", 2317: "鴻海", 2454: "聯發科", 2412: "中華電", 6505:"台塑化",2308: "台達電"} print(a) print("迴圈列出字典的所有值") for t in a: print(a[t]) b = a.copy() #字典不能直接assign print(b) a.update({2881:"富邦金控"})#台灣第七大 a.update({2303:"聯電"}) #台灣大八大 for t in a: print(a[t]) a.setdefault(1303,"南亞") a.setdefault(2882,"國泰金") i = 0 for t in a: #python迴圈不使用{...}縮排整齊整齊 i = i + 1 print("台灣第" + str(i) + a[t]) w3schools字典方法列表 Python has a set of built-in methods that you can use on dictionaries. Method Description clear() 移除字典內容Removes all the elements from the dictionary copy() 拷貝Returns a copy of the dictionary fromkeys() Returns a dictionary with the specified keys and value get() 取得鍵Returns the value of the specified key items() Returns a list containing a tuple for each key value pair keys() Returns a lis...
JavaScript輸出結果 劉任昌輸入字串: JavaScript程式碼 lt=less than; gt=greater than; <p>劉任昌輸入字串:<input type="text" width="80" id="in"></p> <p><input type="button" value="劉任昌執行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 = "源字串: "+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; } </script> 微軟VS Code編輯Java程式 Java程式碼 import java.util.Scanner; /*開啟套件package util=utility用途,Scanner掃描器*/ /*劉任昌utility industry=公用事業產業,電力,自來水,效用=utility */ class Catty { public static void main(String[] args) { String a, b="...
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