Question

我是C＃的新手。我有2个字符串，它们代表国际音标字符。

String 1 - ðə ɻɛd fɑks ɪz hʌŋgɻi 
String 2 - ðæt ɪt foks ɪn ðʌ sʌn ɻe͡i

现在我需要将String 1与String 2进行比较，并找出String 2与String 1的差异。我需要这个值作为百分比值。我怎样才能做到这一点？小代码示例将帮助我很多。对你的帮助表示感谢。

Answer 1

你应该知道你的String Metric

是什么

另外，请查看此How to find difference between two strings - C#问题。

这将比较字符char，它与Llevenshtein Distance不同，这在比较字符串差异时更常见。

void Main()
{
    string str1 = "ðə ɻɛd fɑks ɪz hʌŋgɻi";
    string str2 = "ðæt ɪt foks ɪn ðʌ sʌn ɻe͡i";
    Console.WriteLine(StringCompare(str1,str2)); //34.6153846153846
    Console.WriteLine(StringCompare("same","same")); //100
    Console.WriteLine(StringCompare("","")); //100
    Console.WriteLine(StringCompare("","abcd")); //0  
}

static double StringCompare(string a, string b)
{
    if (a == b) //Same string, no iteration needed.
        return 100;
    if ((a.Length == 0) || (b.Length == 0)) //One is empty, second is not
    {
        return 0;
    }
    double maxLen = a.Length > b.Length ? a.Length: b.Length;
    int minLen = a.Length < b.Length ? a.Length: b.Length;
    int sameCharAtIndex = 0;
    for (int i = 0; i < minLen; i++) //Compare char by char
    {
        if (a[i] == b[i])
        {
            sameCharAtIndex++;
        }
    }
    return sameCharAtIndex / maxLen * 100;
}

Answer 2

的内容

string str1 = "ðə ɻɛd fɑks ɪz hʌŋgɻi";
string str2 = "ðæt ɪt foks ɪn ðʌ sʌn ɻe͡i";

char[] str1Char = str1.ToCharArray();
char[] str2Char = str2.ToCharArray();

int matchCount = 0;
int unmatchedCount = 0;


for (int x = 0; x>= str1Char.Length || x >= str2Char; x++;)
{
   if (str1Char[x] == str2Char[x])
      matchCount++;
   else
      unmatchedCount++;
}

int longestString = str1Char.Length;
if (str2Char.Length > longestString )
    longestString = str2Char.Length;

int perc = (matchCount/longestString )*100;

如果第一个字符串比第二个字符串短但你得到了jist

，这将会失败

如何比较2个字符串并找出百分比差异？

2 个答案: