劉哲瑋程式設計HTML.CSS.JavaScript.Java

//劉哲瑋,2022/11/10,學習陣列,方法length public class Main { public static void main(String[] args) { String[] cars={"富豪","寶馬","福特","馬自達","撈屎來食"}; int j; j=cars.length; System.out.println("陣列長度:"+j); for (int i=0;i

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劉哲瑋Python集合set清單list元組tuple字典dictionary

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w3schools練習截圖 w3schools程式碼 #劉哲瑋集合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 diffe...
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