1 #include <malloc.h>
2 #include <stdio.h>
3 #include <time.h>
4 #include <stdlib.h>
5 #define MAXSIZE 10
6 typedef struct {
7 int L[MAXSIZE+1];
8 int length;
9
10 }List,*list;
11 void swap(List &L,int low,int high){
12 int temp;
13 temp=L.L[low];
14 L.L[low] = L.L[high];
15 L.L[high]=temp;
16 }
17 /**************************************
18 * 快速排序 *
19 * ************************************/
20
21 int Partition(List &L,int low,int high){
22 int pro;
23 pro=L.L[low];
24 while(low<high){
25
26 while(L.L[high]>=pro&&low<high){
27 high--;
28 }
29 swap(L,low,high);
30 while(L.L[low]<=pro&&low<high){
31 low++;
32 }
33
34
35 swap(L,low,high);
36
37 }
38 //L.L[low]=L.L[0];
39 return low;
40
41 }
42 void Qsort(List &list,int low,int high){
43 int pivot;
44 if(low<high){
45 pivot = Partition(list,low,high);
46 Qsort(list,low,pivot-1);
47 Qsort(list,pivot+1,high);
48 }
49
50 }
51
52
53 /****************************
54 * 冒泡排序 *
55 * **************************/
56 void bubbleSort(List &list){
57 int i,j;
58 bool flag=1;
59 for(i=1;i<=list.length&&flag;i++){
60 flag=0;
61 for(j=list.length-1;j>=i;j--){
62 if(list.L[j]>list.L[j+1]){
63 swap(list,j,j+1);
64 flag=1;
65 }
66 }
67 }
68
69 }
70 /***************************
71 * 简单选择排序 *
72 ***************************/
73 void selectSort(List &list){
74 int i,j,min;
75 for(i=0;i<=list.length;++i){
76 min=i;
77 for(j=i+1;j<=list.length;++j){
78 if(list.L[min]>list.L[j]){
79 //swap(list,min,j);
80 min=j;
81 }
82 }
83 if(i!=min){
84 swap(list,min,i);
85 }
86 }
87
88 }
89 /*************************
90 * 直接插入排序 *
91 *************************/
92 void insertSort(List &list){
93 int i,j;
94 for(i=2;i<=list.length;++i){
95 if(list.L[i]<list.L[i-1]){
96 list.L[0]=list.L[i];
97 for(j=i-1;list.L[j]>list.L[0];--j){
98 list.L[j+1]=list.L[j];
99 }
100 list.L[j+1]=list.L[0];
101 }
102 }
103 }
104 /***********************
105 * 希尔排序 *
106 ***********************/
107 void sheelSort(List &list){
108 int i,j;
109 int increment=list.length;
110
111 do{
112 increment = increment/3+1;
113 for(i=increment+1;i<=list.length;++i){
114 if(list.L[i]<list.L[i-increment]){
115 list.L[0]=list.L[i];
116 for(j=i-increment;list.L[0]<list.L[j]&&j>0;j-=increment){
117 list.L[j+increment]=list.L[j];
118 }
119 list.L[j+increment] = list.L[0];
120 }
121 }
122 }while(increment!=1);
123
124 }
125 /***********************
126 2 * 归并排序 *
127 3 ***********************/
128
129 void merge(int SR[],int TR[],int i,int m,int n){
130 int j,k,l;
131 for(j=m+1,k=i;i<=m&&j<=n;k++){
132 if(SR[i]<SR[j]){
133 TR[k]=SR[i++];
134 }else{
135 TR[k]=SR[j++];
136 }
137 }
138 if(i<=m){
139 for(l=0;l<=m-i;l++){
140 TR[k+l]=SR[i+l];
141 }
142 }
143 if(j<=n){
144 for(l=0;l<=n-j;l++){
145 TR[k+l]=SR[j+l];
146 }
147 }
148
149
150 }
151
152 void mergePass(int SR[],int TR[],int s,int n){
153 int i=1;
154 int j;
155 while(i<=n-(2*s)+1){
156 merge(SR,TR,i,i+s-1,i+(2*s)-1);
157 i=i+(2*s);
158
159 }
160 if(i<n-s+1){
161 merge(SR,TR,i,i+s-1,n);
162 }else{
163 for(j=i;j<=n;j++){
164 TR[j]=SR[j];
165 }
166 }
167
168
169 }
170 void mergeSort2(List* list){
171 int *TR = (int*)malloc((list->length+1)*sizeof(int));
172 int k=1;
173 while(k<list->length){
174 mergePass(list->L,TR,k,list->length);
175 k=2*k;
176 mergePass(TR,list->L,k,list->length);
177 k=2*k;
178 }
179
180 }
181 void mSort(int SR[],int TR1[],int s,int t){
182 int m;
183 int TR2[MAXSIZE+1];
184 if(s==t){
185 TR1[s]=SR[s];
186 }else{
187 m=(s+t)/2;
188 mSort(SR,TR2,s,m);
189 mSort(SR,TR2,m+1,t);
190 merge(TR2,TR1,s,m,t);
191 }
192 }
193 void mergeSort(List* list){
194 mSort(list->L,list->L,1,list->length);
195 }
196
197 /******************
198 * 文件操作 *
199 ******************/
200 int createSourceFile(){
201 FILE *fp;
202 if((fp = fopen("source.txt","w+"))==NULL){
203 printf("can not open");
204 return 1;
205 //exit(0);
206 }
207 srand(time(NULL));
208 int tag;
209 for(tag=1;tag<=MAXSIZE;tag++){
210
211 // list.L[tag] = rand()%2000;
212 fprintf(fp,"%d ",rand()%2000);
213 }
214 fclose(fp);
215 return 0;
216 }
217 void readSourceFile(List & list){
218 FILE *fp;
219 if((fp = fopen("source.txt","r"))==NULL){
220 printf("can not open");
221 exit(0);
222 }
223 int tag;
224 for(tag=1;tag<=MAXSIZE;tag++){
225
226 // list.L[tag] = rand()%2000;
227 fscanf(fp,"%d ",&list.L[tag]);
228 //printf("%d ",list.L[tag]);
229 }
230 fclose(fp);
231 }
232 void createToFile(List &list){
233 FILE *fp;
234 if((fp = fopen("to.txt","w+"))==NULL){
235 printf("can not open");
236 exit(0);
237 }
238 srand(time(NULL));
239 int tag;
240 for(tag=1;tag<=MAXSIZE;tag++){
241
242 // list.L[tag] = rand()%2000;
243 fprintf(fp,"%d ",list.L[tag]);
244 if(tag%5==0){
245 fprintf(fp,"\n");
246 }
247 }
248 fclose(fp);
249 }
250 /********************
251 * 查看list *
252 ********************/
253 void show(List &list){
254 int i;
255 for(i=1;i<MAXSIZE+1;i++){
256 printf("%d,",list.L[i]);
257 }
258 printf("\n");
259 }
260
261 /******************
262 * 菜单 *
263 *****************/
264
265 void mune(){
266 printf(" ********************\n\
267 * 排序大集合 *\n\
268 ********************\n\
269 ----------------------\n\
270 | 1.生成随机数文件\n\
271 | 2.快速排序\n\
272 | 3.冒泡排序\n\
273 | 4.简单选择排序\n\
274 | 5.直接插入排序\n\
275 | 6.希尔排序\n\
276 | 7.归并排序（递归）\n\
277 | 8.归并排序（非递归）\n\
278 | 9.保存至文件\n\
279 | #.查看数据\n\
280 | 0.退出\n\
281 ----------------------\n\
282 请输入您的指令\n");
283
284 //return
285 }
286
287 int main(){
288
289 List list={{0},MAXSIZE};
290 //Qsort(list,0,9); //快速排序
291 //bubbleSort(list);
292 //selectSort(list);
293 //insertSort(list);
294
295 //createSourceFile();
296 //readSourceFile(list);
297 mune();
298 char num='1';
299 for(num;num!='0';){
300
301 scanf("%c",&num);
302 getchar();
303 switch(num){
304 case '1':
305 if(createSourceFile()){
306 printf("file error\n");
307 }else{
308 printf("file create success~~\n");
309 readSourceFile(list);
310 }
311 break;
312 case '2':
313 readSourceFile(list);
314 Qsort(list,0,MAXSIZE);
315 printf("操作成功~~\n");
316 break;
317 case '3':
318 readSourceFile(list);
319 bubbleSort(list);
320 printf("操作成功~~\n");
321 break;
322 case '4':
323 readSourceFile(list);
324 selectSort(list);
325 printf("操作成功~~\n");
326 break;
327 case '5':
328 readSourceFile(list);
329 insertSort(list);
330 printf("操作成功~~\n");
331 break;
332 case '6':
333 readSourceFile(list);
334 sheelSort(list);
335 printf("操作成功~~\n");
336 break;
337 case '7':
338 readSourceFile(list);
339 mergeSort(&list);
340 printf("操作成功~~\n");
341 break;
342 case '8':
343 readSourceFile(list);
344 mergeSort2(&list);
345 printf("操作成功~~\n");
346 break;
347 case '9':
348 createToFile(list);
349 printf("操作成功~~\n");
350 break;
351 case '#':
352
353 show(list);
354 break;
355 default :
356 printf("输入有误，请重输\n");
357 }
358
359 }
360
361 return 0;
362 }
363