[英]Checking if a string contains a specific word C#
I am checking these strings to see if they contain the word "hi" and returning true if they do.我正在检查这些字符串以查看它们是否包含单词“hi”,如果包含则返回 true。 otherwise i am returning false.
否则我返回错误。 the string "high up should return false but is returning true. How can i fix this?
字符串“high up 应该返回 false 但返回 true。我该如何解决这个问题?
public static bool StartHi(string str)
{
if (Regex.IsMatch(str, "hi"))
{
return true;
}
else
return false;
}
static void Main(string[] args)
{
StartHi("hi there"); // -> true
StartHi("hi"); // -> true
StartHi("high up"); // -> false (returns true when i run)
}
尝试指定单词边界 ( \\b
):
if(Regex.IsMatch(str, @"\bhi\b"))
private static bool CheckIfExists(string sourceText, string textToCheck)
{
return sourceText.Split(' ').Contains(textToCheck);
}
This code will return True for "jumps" but not "jump" in sentence.此代码将为“跳跃”返回 True,但不会在句子中返回“跳跃”。
string sourceText = "The quick brown fox jumps over the lazy white dog.";
string textToCheck = "jump";
if (sourceText.Split(' ').Contains(textToCheck))
{
Console.WriteLine("Word \"" + textToCheck + "\" EXACTLY exists in sentence");
}
else
{
Console.WriteLine("Word \"" + textToCheck + "\" doesn't exist in sentence");
}
Console.ReadLine();
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