M¹nh D¬ng Biªn So¹n Bé M«n CÊu Tróc D÷ LiÖu Gi¶i ThuËt 2012 §ª Sè 6 Trong Bé §Ò ¤n TËp #include<iostream.h> #include<malloc.h> #include<fstream.h> #include<string.h> ifstream tepvao("C:/cau truc du lieu/dethi/trungto.in.txt"); ofstream tepra("C:/cau truc du lieu/dethi/hauto.out.txt"); /* Chuyen tu trung to sang hau to */ struct node { char conyeu; struct node *next; }; typedef struct node *stacknode; typedef struct { stacknode top; }Stack; Stack dau; void KhoiTaoStack(Stack *S) { S->top=NULL; return ; } int StackRong(Stack S) { return (S.top==NULL); } void PUSHStack(Stack *S,char x) { stacknode p; p=(stacknode)malloc(sizeof(struct node)); p->conyeu=x; p->next=S->top; S->top=p; return ; } char POPStack(Stack *S) { stacknode p; if(StackRong(*S)) { return -1; }else { p=S->top; S->top=S->top->next; return p->conyeu; } } char xemdinh(Stack *S) { stacknode p; if(StackRong(*S)){return '\0';} p=S->top; return p->conyeu; } int pri(char x) { if(x=='^')return 3; if(x=='*'||x=='/')return 2; if(x=='+'||x=='-')return 1; return 0; } void hauto(char S[]) { int n=strlen(S); Stack cun; KhoiTaoStack(&cun); for(int i=0;i<n;i++) { if(S[i]=='(')PUSHStack(&cun,S[i]); else if(S[i]==')') { while(1) { if(xemdinh(&cun)=='('){POPStack(&cun);break;} else if(pri(xemdinh(&cun))>=1)tepra<<POPStack(&cun)<<" "; else if(StackRong(cun))break; } if(xemdinh(&cun)=='(')POPStack(&cun); } else if(pri(S[i])>=1) { while(1) { if(StackRong(cun)||xemdinh(&cun)=='(') { PUSHStack(&cun,S[i]); break; } else if(pri(xemdinh(&cun))<pri(S[i])) { PUSHStack(&cun,S[i]); break; } else tepra<<POPStack(&cun)<<" "; } } else tepra<<S[i]<<" "; } while(StackRong(cun)!=1)tepra<<POPStack(&cun)<<" "; tepra<<endl; } void NhapDL(char S[][600],int &n) { tepvao>>n; for(int i=1;i<=n;i++) tepvao>>S[i]; } void InKetQua(char S[][600],int n) { tepra<<n<<endl; for(int i=1;i<=n;i++) hauto(S[i]); } main() { char S[1000][600]; int n; NhapDL(S,n); InKetQua(S,n); } . TËp #include<iostream.h> #include<malloc.h> #include<fstream.h> #include<string.h> ifstream tepvao("C:/cau truc du lieu/dethi/trungto.in.txt"); ofstream tepra("C:/cau truc du lieu/dethi/hauto.out.txt"); /* Chuyen tu trung to sang hau to */ struct