计算字符串的相似度

来源：互联网发布：sci影响因子查询数据库编辑：程序博客网时间：2024/05/16 16:54

#include <stdio.h>
#include <stdlib.h>

int minValue(int a, int b, int c)
{
    int min = ((a < b) ? a : b) < c ? ((a < b) ? a : b) : c;
    return min;
}
int CalculateStringDistance(char* strA, int pABegin, int pAEnd, char* strB, int pBBegin, int pBEnd)
{
    if(pABegin > pAEnd)
    {
        return 0;
    }
    else
    {
        return pBEnd - pBBegin + 1;
    }

    if(pBBegin > pBEnd)
    {
        if(pABegin > pAEnd)
        {
            return 0;
        }
        else
        {
            return pAEnd - pABegin + 1;
        }
    }

    if(strA[pABegin] == strB[pBBegin])
    {
        return CalculateStringDistance(strA, pABegin + 1, pAEnd, strB, pBBegin + 1, pBEnd);
    }
    else
    {
        int t1 = CalculateStringDistance(strA, pABegin, pAEnd, strB, pBBegin + 1, pBEnd);
        int t2 = CalculateStringDistance(strA, pABegin + 1, pAEnd, strB, pBBegin, pBEnd);
        int t3 = CalculateStringDistance(strA, pABegin + 1, pAEnd, strB, pBBegin + 1, pBEnd);
        return minValue(t1, t2, t3) + 1;

    }
}
int main()
{
    char * strA = "abcdefg";
    char * strB = "abcdef";
    int distance = CalculateStringDistance(strA, 1, 7, strB, 1, 6);
    //int m = minValue(1, 2, 3);
    printf("min = %d\n",distance);
    return 0;
}