二維數組C＃

Question

我會像這樣得到用戶的輸入 - “99211,99212,99213_1,99214,99215_3”並將其存儲在一個字符串中

string cpt = "99211,99212,99213_1,99214,99215_3";
cptarray = cpt.Split(',');

我把輸出作為

cptarray[0] = "99211"
cptarray[1] = "99212"
cptarray[2] = "99213_1"
cptarray[3] = "99214"
cptarray[4] = "99215_3"

但我希望輸出為：

cptarray[0][0] = "99211",""
cptarray[1][0] = "99212",""
cptarray[2][0] = "99213","1"
cptarray[3][0] = "99214",""
cptarray[4][0] = "99215","3"

如果我需要得到如上所述的輸出，那么我可以使用2D數組，這是正確的方法嗎？

Answer 1

根據提供的語法：

 cptarray[0][0]
 ...
 cptarray[4][0]

你想要一個鋸齒狀的陣列，而不是2D陣列; 你可以在Linq的幫助下構建這個數組：

 var cptarray = cpt
   .Split(',')
   .Select(number => number.Split('_'))
   .Select(items => items.Length == 1 ? new string[] {items[0], ""} : items)
   .ToArray();

測試

string test = string.Join(Environment.NewLine, cptarray
  .Select((line, index) => string.Format("cptarray[{0}] = {1}", 
     index,
     string.Join(", ", line.Select(item => "\"" + item + "\"")))));

Console.Write(test);

產量

 cptarray[0] = "99211", ""
 cptarray[1] = "99212", ""
 cptarray[2] = "99213", "1"
 cptarray[3] = "99214", ""
 cptarray[4] = "99215", "3"