在C＃中第n次出现特殊字符时添加换行字符

Question

考虑一下我有一个包含这么多管道分隔数据的字符串。

String s="hskdhkdh|eeeee|eeeee|eeeee|eeeesds|ddd\nsdsfdfdf|dsfdfdf|dfdsf\ndsfdsf|sdfsfdsfds|cvcxvv|hkdh\nhdskdh|hdkshdkd|n\nkho|jljoas|sbkhash|bkshoshak\nhksashalsha|bkgaskgask|hkhlv|skhgdskdg|bgdsjdgsj|gklgau"

我这个字符串，换行符（\\ n）太多，但是我只想在每6次出现竖线（|）之前就\\ n

所以结果应该是

  String s="hskdhkdh|eeeee|eeeee|eeeee|eeeesds|ddd\nsdsfdfdf|dsfdfdf|dfdsfdsfdsf|sdfsfdsfds|cvcxvv|hkdh\nhdskdh|hdkshdkd|nkho|jljoas|sbkhash|bkshoshak\nhksashalsha|bkgaskgask|hkhlv|skhgdskdg|bgdsjdgsj|gklgau"

我正在控制台应用程序中使用C＃..，有人可以帮我吗

Answer 1

您可以尝试使用Linq ：

  String s =
     "hskdhkdh|eeeee|eeeee|eeeee|eeeesds|ddd\nsdsfdfdf|dsfdfdf|dfdsf\ndsfdsf|sdfsfdsfds|cvcxvv|hkdh\nhdskdh|hdkshdkd|n\nkho|jljoas|sbkhash|bkshoshak\nhksashalsha|bkgaskgask|hkhlv|skhgdskdg|bgdsjdgsj|gklgau";

  // Split by | 
  // Remove extra \n 
  // Join back by |
  String result = String.Join("|", s
    .Split('|')
    .Select((item, index) => ((index > 0) && (index % 5 == 0)) 
               ? item 
               : item.Replace("\n", "")));

  // Test:
  // hskdhkdh|eeeee|eeeee|eeeee|eeeesds|ddd
  // sdsfdfdf|dsfdfdf|dfdsfdsfdsf|sdfsfdsfds|cvcxvv|hkdh
  // hdskdh|hdkshdkd|nkho|jljoas|sbkhash|bkshoshak
  // hksashalsha|bkgaskgask|hkhlv|skhgdskdg|bgdsjdgsj|gklgau
  Console.Write(result);

Answer 2

var bits = s.Split('|'); // Divide into bits
for(int i = 0; i < bits.Length; i++){
  if(i % 6 == 0){
    bits[i] += "\n";
  }
}
var done = string.Join(bits, '|');

这应该工作（如果编译，我直接在回复中编码）

Answer 3

最好的选择是使用string.split()方法将其更改为substrings array ，然后使用Stringbuilder和counter变量拆分字符串。

我将在下面使用您的字符串编写此代码。

 string s = "hskdhkdh | eeeee | eeeee | eeeee | eeeesds | ddd | sdsfdfdf | dsfdfd | dfdsfdsfdsf | sdfsfdsfds | cvcxvv | hkdh | hdskdh | hdkshdkd | nkho | jljoas | sbkhash | bkshoshak | hksashalsha | bkgaskgask | hkhlv | skhgdskdg | bgdsjdgsj";

        string[] substrings = s.Split('|');

        int counter = 1;

        StringBuilder sb = new StringBuilder();

        foreach (string sub in substrings)
        {
            sb.Append(sub + "|");

            if (counter % 6 == 0)
            {
                sb.Append("\n");
            }

            counter++;
        }

        s = sb.ToString();