Question

我希望将两个字符串相互匹配，同时注意三个条件：

1个案例敏感度（应该都不区分大小写）：wHo＆lt; =＆gt;谁

2-underscore：father_of＆lt; =＆gt;

的父亲

3个缺失的空间：barackobama＆lt; =＆gt;巴拉克奥巴马

因此，以下两个字符串应该相互匹配

谁是barack_obama的父亲＆lt; =＆gt;谁是巴拉克奥巴马的父亲

我不知道从哪里开始，我试图得到两个字符串的排列，考虑下划线和缺少空格的情况，所以它就像

Who, is, fatherof, barack_obama

who is, is fatherof, fatherof barack_obama,
whois, isfatherof, fatherofbarack_obama,
who_is, is_fatherof, fatherof_barack_obama,

who is fatherof, is fatherof barack_obama
whoisfatherof, isfatherofbarack_obama
who_is_fatherof, is_fatherof_barack_obama

who is fatherof barack_obama
whoisfatherofbarack_obama
who_is_fatherof_barack_obama

这对于将barack obama与barack_obama匹配有好处，但反之亦然，即使我能够在其间拆分带有undserscore的字符串，我也不能用缺少的空间做到这一点

Answer 1

也许这样做：

public static class StringExtensions
{
  private string NormalizeText(string text)
  {
    return text..Replace("_","")
                .Replace(" ","")
                .Replace(",","");

  }

  public static bool CustomEquals(this string instance, string otherString)
  {
    return NormalizeText(instance).Equals(NormalizeText(otherString),
                                          StringComparison.CurrentCultureIgnoreCase);
  }
}

所以

"Who is the fatherof barack_obama"
"who IS the father of barack obama"

比较（忽略大小写）

"Whoisthefatherofbarackobama"
"whoISthefatherofbarackobama"

Answer 2

用于删除字符的带有正则表达式的较短版本：

public static class StringExtensions
{
    public static bool CustomEquals(this string current, string other)
    {
        string pattern = @"[_\s,]";
        return String.Equals(
            Regex.Replace(current, pattern, String.Empty),
            Regex.Replace(other, pattern, String.Empty), 
            StringComparison.CurrentCultureIgnoreCase);
    }
}

在匹配字符串C＃时定义要忽略的字符

2 个答案: