엄 울 민 데이터 구조 연습 문제 C 언어 4.10 ~ 4.13

#include <iostream>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <stdio.h>
using namespace std;
#define ok 1
#define error 0
#define true 1
#define false 0
#define overflow -1
//#define stack_init_size 100
//#define stack_increment 10
typedef int status;
#define maxsize 255
typedef char sstring[maxsize + 1];
status sassign(sstring &s, char *ch)
{
        int i = 0;
        char *p = ch;
        while (i < maxsize && *p)
        {
                s[++i] = *p++;
        }
        s[0] = i;
        if (*p)
        {
                return error;
        }
        else
        {
                return ok;
        }
}
void strassign(sstring &T, sstring S)
{
        int i;
        for (i = 0; i <= S[0]; i++)
        {
                T[i] = S[i];
        }
}
void strcpy(sstring &t, sstring s)
{
        int i;
        for (i = 0; i <= s[0]; i++)
        {
                t[i] = s[i];
        }
}
int strcompare(sstring s, sstring t)
{
        int i = 1;
        while (i <= s[0] && i <= t[0] && s[i] == t[i])
        {
                i++;
        }
        if (i <= s[0])
                if (i <= t[0])
                {
                        return s[i] - t[i];
                }
                else
                {
                        return  s[i];
                }
        else if (i <= t[0])
        {
                return -t[i];
        }
        else
        {
                return  0;
        }
}
status concat(sstring &t, sstring s1, sstring s2)
{
        int i, j;
        for (i = 1; i <= s1[0]; i++)
        {
                t[i] = s1[i];
        }
        if (s1[0] + s2[0] <= maxsize)
        {
                for (j = 1; j <= s2[0]; j++)
                {
                        t[i++] = s2[j];
                }
                t[0] = s1[0] + s2[0];
                return ok;
        }
        else
        {
                for (j = 1; j <= maxsize - s1[0]; j++)
                {
                        t[i++] = s2[j];
                }
                t[0] = maxsize;
                return error;
        }
}
status substring(sstring &sub, sstring s, int pos, int len) {
        int i;
        if (pos < 1 || pos > s[0] || len < 0 || len > s[0] - pos + 1)
        {
                return error;
        }
        for (i = 1; i <= len; i++)
        {
                sub[i] = s[pos + i - 1];
        }
        sub[0] = len;
        return ok;
}


void putdata(sstring s)
{
        int i;
        printf("
");
        for (i = 1; i <= s[0]; i++)
        {
                printf("%c", s[i]);
        }
}

/*4.10*/
void strreverse(sstring &s, sstring r) // r  s
{
        int i;
        sstring a, b, c;
        strassign(s, "");
        for (i = r[0]; i > 0; i--)
        {

                substring(a, r, i, 1);

                strassign(b, a);
                concat(c, s, b);
                strassign(s, c);
        }
}

/*4.11*/
int ak[maxsize];
int substract(sstring s, sstring t, sstring &r)
{
        int i, j = 1, k = 1,q=1;
        sstring a, b, d,e;
        memset(ak, -1, sizeof(a));
        sstring c;
        sassign(a, " ");
        sassign(b, " ");
        sassign(c, " ");
        sassign(d, " ");
        for (i = 1; i <= s[0]; i++)
        {
                substring(c, s, i, 1);
                substring(a, s, 1, 1);
                for (j = 1; j < i && strcompare(c, a);) /*  s     c（      ）       */
                {
                        j++;
                        //printf("%d
",j);
                        substring(a, s, j, 1);
                }
                if (i == j)
                {
                        substring(b, t, 1, 1);
                        for (k = 1; k <= t[0] && strcompare(c, b);)   /*   t   */
                        {
                                k++;
                                substring(b, t, k, 1);

                        }
                        if (k > t[0])
                        {
                                concat(d, r, c);
                                strassign(r, d);
                                //putdata(r);
                                ak[q++]=j;

                        }
                }
        }
        //printf("%d",ak[q-1]);
        q--;
        return q;

}







/*4.12*/
int Replace(sstring &s, sstring t, sstring v)
{
        int n, i;
        sstring head, tail, a, b;
        sassign(b, "");
        sassign(a, "");
        sassign(head, "");
        sassign(tail, "");
        for (n = 0, i = 1; i <= s[0] - t[0] + 1; i++)
        {
                substring(a, s, i, t[0]);
                if (!strcompare(a, t))
                {
                        substring(head, s, 1, i - 1);
                        substring(tail, s, i + t[0], s[0] - t[0] - i + 1);
                        concat(b, head, v);
                        concat(s, b, tail);
                        i += v[0];
                        n++;
                }
        }
        return n;

}


/*4.13*/
int Delete(sstring &s, sstring t)
{
        int n, i;
        sstring head, tail, a, b;
        sassign(b, "");
        sassign(a, "");
        sassign(head, "");
        sassign(tail, "");
        for (n = 0, i = 1; i <= s[0] - t[0] + 1; i++)
        {
                substring(a, s, i, t[0]);
                if (!strcompare(a, t))
                {
                        substring(head, s, 1, i - 1);
                        substring(tail, s, i + t[0], s[0] - t[0] - i + 1);
                        concat(s, head, tail);
                        n++;
                }
        }
        return n;
}






int main()
{
        int o,p,q,i;
        printf("**********************************************
");
        sstring r, s, v, k;
        sstring a, b, c;
        printf("4.10
");
        sassign(r, "I am a ACMer");
        printf("  ：");
        putdata(r);
        strreverse(s, r);
        printf("
  ：");
        putdata(s);



        printf("
**********************************************
");
        printf("4.11
");
        sassign(k, "I am a ACMer");
        printf(" 1：");
        putdata(k);
        printf("
 2:");
        sassign(v, "ACMer");
        putdata(v);
        sassign(c, "");
        printf("   1     2    ：");
        o=substract(k, v, c);
        putdata(c);
        printf("
              :
");
        for(i=1;i<=o;i++)
        {
            printf("%d ",ak[i]);
        }




        printf("
**********************************************
");
        printf("4.12
");
        printf("  ：");
        putdata(r);
        printf("
 “ACMer”   “bird”");
        sassign(a, "ACMer");
        sassign(b, "bird");
        printf("
   ：");
        Replace(r, a, b);
        putdata(r);


        printf("
**********************************************
");
        printf("4.13
");
        sassign(r, "I am a ACMer");
        printf("  ：");
        putdata(r);
        printf("
 “ACMer”  ");
        sassign(a, "ACMer");
        printf("
   ：");
        Delete(r, a);
        putdata(r);
        printf("
**********************************************
");



        return 0;
}