编辑距离

 

 

#include<iostream>#include<stdlib.h>#include<stdio.h>#include<string>using namespace std;#define maxNum 100char a[maxNum],b[maxNum];//存放输入字符串int c[maxNum][maxNum];//动态规划二维表int diff(char a,char b)//判断字符a，b是否相等， 相等则编辑距离不增加，返回0，否则返回1{if(a==b)return 0;elsereturn 1;}int min(int a,int b,int c)//求三数中最小的{int d;if(a<b)d=a;elsed=b;if(c<d)return c;elsereturn d;}int main(){printf("please input string a/n");scanf("%s",a);printf("please input string b/n");scanf("%s",b);printf("%s %s/n",a,b);int len_a=strlen(a);int len_b=strlen(b);int i,j;for(i=0;i<=len_a;i++)c[i][0]=i;for(j=0;j<=len_b;j++)c[0][j]=j;for(i=1;i<=len_a;i++)for(j=1;j<=len_b;j++)c[i][j]=min(1+c[i-1][j],1+c[i][j-1],diff(a[i-1],b[j-1])+c[i-1][j-1]);for(i=0;i<=len_a;i++){for(j=0;j<=len_b;j++)cout<<c[i][j]<<" ";cout<<endl;}system("pause");return 0;}/*please input string aEXPONENTIALplease input string bPOLYNOMIALEXPONENTIAL POLYNOMIAL0 1 2 3 4 5 6 7 8 9 101 1 2 3 4 5 6 7 8 9 102 2 2 3 4 5 6 7 8 9 103 2 3 3 4 5 6 7 8 9 104 3 2 3 4 5 5 6 7 8 95 4 3 3 4 4 5 6 7 8 96 5 4 4 4 5 5 6 7 8 97 6 5 5 5 4 5 6 7 8 98 7 6 6 6 5 5 6 7 8 99 8 7 7 7 6 6 6 6 7 810 9 8 8 8 7 7 7 7 6 711 10 9 8 9 8 8 8 8 7 6请按任意键继续. . .*/