用拆分卡在c＃循环上 [英] Stuck on c# loop with split

问题描述

我有一个测试字符串1,2,3,4,5,6,7,8,9,10,11,12,13

我希望输出为

123

456

789

101112

13



我不确定slpit的语法。有人可以帮忙吗？

I have a test string "1,2,3,4,5,6,7,8,9,10,11,12,13"
I want the output to be
123
456
789
101112
13

I am not sure of the syntax for slpit. Can someone help?

string strMyTestMessage = "1,2,3,4,5,6,7,8,9,10,11,12,13";                        
string[] splitted = strMyTestMessage.Split(separator: new[] { "," }, count: 13, options: StringSplitOptions.None);
                                                
string strCountTest;

for (int i = 0; i < splitted.Length; i++)
{                            
if (i / 3 == 1)
 strCountTest = splitted[i].ToString() + "\n";                            
else
 strCountTest = splitted[i].ToString();

onsole.WriteLine(strCountTest);
								
}

推荐答案

拆分选项看起来正确。但是，为了获得预期的输出，您应该以这种方式修改循环：

The split options look correct. However, int order to obtain the expected output you should modify your loop this way:

for (int i = 0; i < splitted.Length; i++)
{
  if (i % 3 == 2)
    strCountTest = splitted[i].ToString() + "\n";
  else
    strCountTest = splitted[i].ToString();

  Console.Write(strCountTest);

}

试试这个

try this

string strMyTestMessage = "1,2,3,4,5,6,7,8,9,10,11,12,13";
string[] strArray = strMyTestMessage.Split(',');
int iterations = strArray.Length;
for (int i = 0; i <= iterations; )
{
   Console.WriteLine(strArray[i] + ((i + 1) < iterations ? strArray[i + 1] : "") + ((i + 2) < iterations ? strArray[i + 2] : ""));

   i = i + 3;
}

祝你好运; - ）

good luck ;-)

我接受了CPallini322解决方案，因为它是if（i％3 == 2）使用字符串构建器引导我使用自己的解决方案。很抱歉我正在度假的延迟回复。

I accepted CPallini322 solution because it was the if (i % 3 == 2) that lead me to my own solution using string builder. Sorry for the delayed response I was on vacation.

string strMyTestMessage = "1,2,3,4,5,6,7,8,9,10,11,12,13";
string[] splitted = strMyTestMessage.Split(separator: new[] { "," }, count: 13, options: StringSplitOptions.None);


            StringBuilder sb = new StringBuilder();
            string strOutput;

            for (int i = 0; i < 13; i++)
            {
                               
                strOutput = splitted[i].ToString();

                if (i % 3 == 2)
                {
                    sb.Append(strOutput).Append("\n");
                    strOutput = "";
                }
                else
                {
                    sb.Append(strOutput);
                    strOutput = "";
                }
                                           

            }
            Console.WriteLine(sb.ToString());

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