//簡銘伸2022.11.7.陣列=順序的同型資料
public class Main {
public static void main(String[] args) {
String[] hey = {"奔馳", "寶馬", "福特", "馬自達", "撈屎來食"};
/*宣告字串陣列,[]代表陣列,名稱hey */
/* 方法 length 陣列的長度, 使用迴圈列出所有我的汽車 */
System.out.println( "陣列長度=" + hey.length);
for ( int i = 0; i < hey.length; i++)
System.out.println( hey[i]);
}
}
簡銘伸在python tkinter繪圖
import csv #輸入csv套件comma separated value f = open('200201to202505.csv','r', encoding="utf-8")#打開下載的檔案SPY.CSV,模式是r讀取, csvreader = csv.reader(f) #將檔案讀入變數csvreader header, rows = list(), list() #宣告空白串列(陣列,清單) firms = set() #建構集合 header = next(csvreader) #串列header儲存檔案第一列 for record in csvreader: #檔案紀錄,逐列row檢視 rows.append(record) #第i筆附加append於rows串列成為rows[i] firms.add(record[0]) #row[0]公司名稱 f.close() #關閉檔案 months = dict() for year in range(2007,2026): months[year]=[str(year*100+month) for month in range(1,13)] count, sum, sumSq, mean, stdev = dict(), dict(), dict(), dict(), dict() for firm in firms: for year in range(2007, 2026): t = (firm, year) #元組(公司,年) count[t] = 0 sum[t] = 0.0 sumSq[t] = 0.0 for row in rows: #字典value增加append元素 for firm in firms: if row[0] == fir...
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