Question

C#编程 定义一个函数Get Word(string,int),返回参数一string中所指定下标值(参数二)的单词。

已知，参数一String中每个单词空格相隔。注C#编程
例如：Get Word（"This is a dag." , 2）;返回“a”;
Get Word ("This is a dog.", 1,2); 返回“is a”

Answer 1

string GetWord(string aString, List<int> aPositionList)
{
string[] myString = aString.Split(' ');
string result = string.empty;
foreach (int i in aPositionList)
{
if (myString.Length > i)
result += myString[i] + " ";
}
return result.Trim();
}

Answer 2

string GetWord(string str,int n)
{
string[] words = str.Split(new char[]{' '}, StringSplitOptions.RemoveEmptyEntries);
if( words.Length > n)
return words[n];
}