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qb->next=pb; free(pt); } pb=B; free(pb); return OK; } (2)

// A¡¢BÇ󽻣¬½á¹û·ÅÔÚA±íÖУ¬²¢É¾³ýÏàÍ¬ÔªËØ

Status ListCrossDelSame_L(LinkList &A,LinkList &B) {

LinkList pa,pb,qa,qb,pt; pa=A; pb=B;

qa=pa; // ±£´æpaµÄǰÇýÖ¸Õë qb=pb; // ±£´æpbµÄǰÇýÖ¸Õë pa=pa->next; pb=pb->next; while(pa&&pb){

if(pa->datadata){ pt=pa;

pa=pa->next; qa->next=pa; free(pt); } else

if(pa->data>pb->data){ pt=pb;

pb=pb->next; qb->next=pb; free(pt); }

else{

if(pa->data==qa->data){ pt=pa;

pa=pa->next; qa->next=pa; free(pt); } else{

qa=pa;

pa=pa->next; } }

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}

while(pa){ pt=pa;

pa=pa->next; qa->next=pa; free(pt); }

while(pb){ pt=pb;

pb=pb->next; qb->next=pb; free(pt); } pb=B; free(pb); return OK; } 2.29 ÒÑÖªA£¬BºÍCΪÈý¸öµÝÔöÓÐÐòµÄÏßÐÔ±í£¬ÏÖÒªÇó¶ÔA±í×÷ÈçϲÙ×÷£ºÉ¾È¥ÄÇЩ¼ÈÔÚB±íÖгöÏÖÓÖÔÚC±íÖгöÏÖµÄÔªËØ¡£ÊÔ¶Ô˳Ðò±í±àдʵÏÖÉÏÊö²Ù×÷µÄËã·¨£¬²¢·ÖÎöÄãµÄËã·¨µÄʱ¼ä¸´ÔÓ¶È£¨×¢Ò⣺ÌâÖÐûÓÐÌØ±ðÖ¸Ã÷ͬһ±íÖеÄÔªËØÖµ¸÷²»Ïàͬ£©¡£

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// ÔÚAÖÐɾ³ý¼ÈÔÚBÖгöÏÖÓÖÔÚCÖгöÏÖµÄÔªËØ£¬½á¹û·ÅÔÚDÖÐ Status ListUnion_Sq(SqList &D,SqList &A,SqList &B,SqList &C) {

SqList Temp;

InitList_Sq(Temp);

ListCross_L(B,C,Temp); ListMinus_L(A,Temp,D); }

2.30 ÒªÇóͬ2.29Ìâ¡£ÊÔ¶Ôµ¥Á´±í±àдËã·¨£¬ÇëÊÍ·ÅA±íÖеÄÎÞÓýáµã¿Õ¼ä¡£

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// ÔÚAÖÐɾ³ý¼ÈÔÚBÖгöÏÖÓÖÔÚCÖгöÏÖµÄÔªËØ£¬²¢ÊÍ·ÅB¡¢C Status ListUnion_L(LinkList &A,LinkList &B,LinkList &C) {

ListCross_L(B,C); ListMinus_L(A,B); }

// Ç󼯺ÏA-B£¬½á¹û·ÅÔÚA±íÖУ¬²¢É¾³ýB±í Status ListMinus_L(LinkList &A,LinkList &B) {

LinkList pa,pb,qa,qb,pt; pa=A; pb=B;

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qa=pa; // ±£´æpaµÄǰÇýÖ¸Õë qb=pb; // ±£´æpbµÄǰÇýÖ¸Õë pa=pa->next; pb=pb->next; while(pa&&pb){

if(pb->datadata){ pt=pb;

pb=pb->next; qb->next=pb; free(pt); } else

if(pb->data>pa->data){ qa=pa;

pa=pa->next; }

else{

pt=pa;

pa=pa->next; qa->next=pa; free(pt); } }

while(pb){ pt=pb;

pb=pb->next; qb->next=pb; free(pt); } pb=B; free(pb); return OK; }

2.31 ¼ÙÉèij¸öµ¥ÏòÑ­»·Á´±íµÄ³¤¶È´óÓÚ1£¬ÇÒ±íÖмÈÎÞÍ·½áµãÒ²ÎÞÍ·Ö¸Õë¡£ÒÑÖªsΪָÏòÁ´±íÖÐij¸ö½áµãµÄÖ¸Õ룬ÊÔ±àдËã·¨ÔÚÁ´±íÖÐɾ³ýÖ¸ÕësËùÖ¸½áµãµÄǰÇý½áµã¡£

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// ÔÚµ¥Ñ­»·Á´±íSÖÐɾ³ýSµÄǰÇý½áµã Status ListDelete_CL(LinkList &S) {

LinkList p,q;

if(S==S->next)return ERROR; q=S;

p=S->next;

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while(p->next!=S){ q=p;

p=p->next; }

q->next=p->next; free(p); return OK; }

2.32 ÒÑÖªÓÐÒ»¸öµ¥ÏòÑ­»·Á´±í£¬Æäÿ¸ö½áµãÖк¬Èý¸öÓò£ºpre£¬dataºÍnext£¬ÆäÖÐdataΪÊý¾ÝÓò£¬nextΪָÏòºó¼Ì½áµãµÄÖ¸ÕëÓò£¬preҲΪָÕëÓò£¬µ«ËüµÄֵΪ¿Õ£¬ÊÔ±àдËã·¨½«´Ëµ¥ÏòÑ­»·Á´±í¸ÄΪ˫ÏòÑ­»·Á´±í£¬¼´Ê¹pre³ÉΪָÏòǰÇý½áµãµÄÖ¸ÕëÓò¡£

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// ½¨Á¢Ò»¸ö¿ÕµÄÑ­»·Á´±í

Status InitList_DL(DuLinkList &L) {

L=(DuLinkList)malloc(sizeof(DuLNode)); if(!L) exit(OVERFLOW); L->pre=NULL; L->next=L; return OK; }

// ÏòÑ­»·Á´±íÖвåÈëÒ»¸ö½áµã

Status ListInsert_DL(DuLinkList &L,ElemType e) {

DuLinkList p;

p=(DuLinkList)malloc(sizeof(DuLNode)); if(!p) return ERROR; p->data=e;

p->next=L->next; L->next=p; return OK; }

// ½«µ¥Ñ­»·Á´±í¸Ä³ÉË«ÏòÁ´±í

Status ListCirToDu(DuLinkList &L) {

DuLinkList p,q; q=L;

p=L->next; while(p!=L){ p->pre=q; q=p;

p=p->next; }

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if(p==L) p->pre=q; return OK; }

2.33 ÒÑÖªÓÉÒ»¸öÏßÐÔÁ´±í±íʾµÄÏßÐÔ±íÖк¬ÓÐÈýÀà×Ö·ûµÄÊý¾ÝÔªËØ£¨È磺×Öĸ×Ö·û¡¢Êý×Ö×Ö·ûºÍÆäËû×Ö·û£©£¬ÊÔ±àдËã·¨½«¸ÃÏßÐÔ±í·Ö¸îΪÈý¸öÑ­»·Á´±í£¬ÆäÖÐÿ¸öÑ­»·Á´±í±íʾµÄÏßÐÔ±íÖоùÖ»º¬Ò»Àà×Ö·û¡£

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// ½«µ¥Á´±íL»®·Ö³É3¸öµ¥Ñ­»·Á´±í

Status ListDivideInto3CL(LinkList &L,LinkList &s1,LinkList &s2,LinkList &s3) {

LinkList p,q,pt1,pt2,pt3; p=L->next; pt1=s1; pt2=s2; pt3=s3; while(p){

if(p->data>='0' && p->data<='9'){ q=p;

p=p->next;

q->next=pt1->next; pt1->next=q; pt1=pt1->next; } else

if((p->data>='A' && p->data<='Z') || (p->data>='a' && p->data<='z')){ q=p;

p=p->next;

q->next=pt2->next; pt2->next=q; pt2=pt2->next; }

else{ q=p;

p=p->next;

q->next=pt3->next; pt3->next=q; pt3=pt3->next; } } q=L; free(q); return OK;

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