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数据结构八种排序方法作业示例(无讲解)
#include <cstdio>#include <cstring>#include <ctime>#include <algorithm>#include <cstdlib>#include <cmath>#include <fstream>using namespace std;class insertSort{public: insertSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~insertSort(){ delete b; } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); for(int i = 0;i<size; i++){ // printf("%d\n",a[i]); // int minind = i; int j = i; for(j = i-1;j>=0;j--){ compTime++; if(b[j]<=b[i]){ break; } } if(b[j]<=b[i]||j<0)j++;//要插入位置 int tmp = b[i]; for(int k = i;k>j;k--){ b[k] = b[k-1]; swapTime ++; } b[j] = tmp; } stop= time(&stop); } void print(){ puts("1 直接插入排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class halfInsertSort{public: halfInsertSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~halfInsertSort(){ delete b; } void sort(){ for(int i=0;i<size;i++)b[i]=a[i]; swapTime = 0; compTime = 0; start = time(&start); for(int i = 0;i<size; i++){ int l=0,r=i; while(r-l>1){ int mid = (l+r)>>1; if(b[mid] > b[i]){ r = mid; } else { l = mid; } compTime++; } if(b[l]<=b[i])l++; int tmp = b[i]; for(int k = i;k>l;k--){ b[k]=b[k-1]; swapTime ++; } b[l]=tmp; } stop= time(&stop); } void print(){ puts("2 折半插入排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class shellSort{public: shellSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~shellSort(){ delete b; } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); int times = int(log2(size+1)); for(int i = 1;i <=times;i++){ int d = int(pow(2,times-i+1)-1); for(int j = 0;j < size;j++){ int tmp = b[j]; int k; for(k= j-d;k>=0&&++compTime&&b[k]>tmp;k-=d){ b[k+d] = b[k];swapTime++; } k+=d; b[k] = tmp; } } stop= time(&stop); } void print(){ puts("3 Shell排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class bubbleSort{public: bubbleSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~bubbleSort(){ delete b; } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); for(int i = 0;i<size; i++){ for(int j = size - 1;j > i; j--){ compTime++; if(b[j]<b[j-1]){ swap(b[j-1],b[j]); swapTime+=3; } } } stop= time(&stop); } void print(){ puts("4 冒泡排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class quickSort{public: quickSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~quickSort(){ delete b; } void partition2(int s,int t){ int low = s,high = t; int key = b[s]; while(low < high){ while(low<high&&high--&&b[high] >= key){compTime++;} if(low==high)break; b[low] = b[high]; swapTime++; while(low<high&&low++&&b[low]<=key){compTime++;} if(low==high)break; b[high] = b[low]; swapTime++; } b[low] = key; if(low>s+1)partition2(s,low); if(low+1<t)partition2(low+1,t); } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); partition2(0,size); stop= time(&stop); } void print(){ puts("5 快速排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class simpleSelectSort{public: simpleSelectSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~simpleSelectSort(){ delete b; } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); for(int i=0;i<size;i++){ int minind =i; for(int j=i+1;j<size&&++compTime;j++){ if(b[minind]>b[j]){ minind = j; } } if(i!=minind){ swap(b[minind],b[i]); swapTime+=3; } } stop= time(&stop); } void print(){ puts("6 简单选择排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class heapSort{public: heapSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~heapSort(){ delete b; } void heapAdjust(int i,int size){ int lchild = 2*i; int rchild = 2*i+1; int mx = i; if(i<=size/2){ if(lchild<size&&b[lchild]>b[mx]){ mx = lchild; compTime++; } if(rchild<size&&b[rchild]>b[mx]){ mx = rchild; compTime++; } } if(mx!=i){ swapTime+=3; swap(b[mx],b[i]); heapAdjust(mx,size); } } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); for(int i = size/2;i>=0;i--){ heapAdjust(i,size); } for(int i = size;i>0;i--){ swap(b[0],b[i-1]); heapAdjust(0,i-1); } stop= time(&stop); } void print(){ puts("7 堆排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};class mergeSort{public: mergeSort(int * a,int size){ this->a = a; this->size = size; b = new int[size]; } ~mergeSort(){ delete b; } void merge(int s,int t){ //printf("s %d t %d\n",s,t); int mid = (s+t)>>1; if(s+1<mid)merge(s,mid); if(t>mid+1)merge(mid,t); int* tmp = new int[t-s+1]; int i = s,j = mid,k = s; while(k<t){ if(i<mid&&j<t){ compTime++; if(b[i]<b[j])tmp[k++-s]=b[i++]; else tmp[k++-s]=b[j++]; } else if(i<mid){ tmp[k++-s]=b[i++]; } else{ tmp[k++-s]=b[j++]; } swapTime ++; } while(--k>=s){ b[k]=tmp[k-s];swapTime++; } // print(); delete tmp; } void sort(){ for(int i =0;i<size;i++)b[i] =a[i]; swapTime = 0; compTime = 0; start = time(&start); merge(0,size); stop= time(&stop); } void print(){ puts("8 归并排序"); puts("展示结果"); for(int i =0;i<size;i++)printf("%d%c",b[i],i==size-1?‘\n‘:‘ ‘); printf("关键字比较次数:%d\n",compTime); printf("关键字排序次数:%d\n",swapTime); printf("用时:%ld ms\n",stop-start); } int swapTime; int compTime;private: int * a; int * b; int size; time_t start,stop;};int printInstruction(){ puts("*************************************************"); puts("0 退出"); puts("1 直接显示结果"); puts("2 比较八种不同排序"); puts("3 重新生成数据"); puts("*************************************************"); int op; scanf("%d",&op); return op;}class generator{ public: generator(){ this->size = 200; this->bon = 200; a = new int[size]; for(int i= 0;i<size;i++){ a[i] = rand()*bon/RAND_MAX; } } generator(int size,int bon){ this->size = size; this->bon = bon; a = new int[size]; for(int i= 0;i<size;i++){ a[i] = rand()*bon/RAND_MAX; } } ~generator(){ delete a; } void print(){ printf("容量:%d 生成数最大值:%d %p\n",size,bon,a); for(int i =0;i<size;i++)printf("%d%c",a[i],i==size-1?‘\n‘:‘ ‘); } int* a; int size; int bon;};void sortPrint(generator * g){ insertSort * sort1=new insertSort(g->a,g->size); halfInsertSort * sort2 = new halfInsertSort(g->a,g->size); shellSort * sort3 = new shellSort(g->a,g->size); bubbleSort * sort4 = new bubbleSort(g->a,g->size); quickSort * sort5 = new quickSort(g->a,g->size); simpleSelectSort* sort6 = new simpleSelectSort(g->a,g->size); heapSort * sort7 = new heapSort(g->a,g->size); mergeSort * sort8 = new mergeSort(g->a,g->size); ofstream out("data.txt"); sort1->sort(); sort1->print(); out<<"("<<sort1->compTime<<","<<sort1->swapTime<<") "; sort2->sort(); sort2->print(); out<<"("<<sort2->compTime<<","<<sort2->swapTime<<") "; sort3->sort(); sort3->print(); out<<"("<<sort3->compTime<<","<<sort3->swapTime<<") "; sort4->sort(); sort4->print(); out<<"("<<sort4->compTime<<","<<sort4->swapTime<<") "; sort5->sort(); sort5->print(); out<<"("<<sort5->compTime<<","<<sort5->swapTime<<") "; sort6->sort(); sort6->print(); out<<"("<<sort6->compTime<<","<<sort6->swapTime<<") "; sort7->sort(); sort7->print(); out<<"("<<sort7->compTime<<","<<sort7->swapTime<<") "; sort8->sort(); sort8->print(); out<<"("<<sort8->compTime<<","<<sort8->swapTime<<") "; out<<endl; delete sort1; delete sort2; delete sort3; delete sort4; delete sort5; delete sort6; delete sort7; delete sort8;}int main(){ generator* g = new generator(); int op; while((op=printInstruction())!=0){ switch(op){ case 1: g->print(); break; case 2: sortPrint(g); break; case 3: delete g; int sz,bon; puts("请输入样本容量"); scanf("%d",&sz); puts("请输入随机生成数最大值"); scanf("%d",&bon); g = new generator(sz,bon); g->print(); break; default: break; } } delete g; return 0;}
数据结构八种排序方法作业示例(无讲解)
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