Within a range of random distribution with a large number of discrete data, how can effective number of statistical data, the great god give a idea

CodePudding user response:

Fyi:

 # include & lt; Stdio. H> 
# include & lt; String. H> 
Char [] s1="delete"; 
Char [] s2="select"; 
Unsigned char n [256]={0}; 
Char r [257]; 
Int I, L, o=0; 
Void main () {
L=strlen (s1); for (i=0; iL=strlen (s2); for (i=0; iL=0; 
For (o=1; O<=256; O++) {
For (I=0; i<256; I++) {
If (o==n [I]) {
R [L++]=I; 
break; 
} 
} 
If (i>=256) break; 
} 
R [L]=0; 
Printf ("] [% s \ n ", r); 
} 
///deltsc 

CodePudding user response:

Again for reference:

//randomly generated 100000000 scope for [0 ~ 2 32 minus 1] data, 
//and then let the user to input a data, determine the user input data is not included in the randomly generated data, 
//requirements: when the user input is completed, must be completed within 1 milliseconds (one over one thousand of a second), 
# include & lt; Stdio. H> 
# include & lt; stdlib.h> 
# include & lt; Time. H> 
# include & lt; The malloc. H> 
Long int I; 
Unsigned long ul; 
Unsigned long * d; 
Unsigned long ulrand (void) {
Return (
(((unsigned long) rand () & lt; <24) & amp; 0 xff000000ul) 
| (((unsigned long) rand () & lt; <12) & amp; 0 x00fff000ul) 
| (((unsigned long) rand ()) & amp; 0 x00000ffful)); 
} 
Void main () {
D=(unsigned long *) calloc (1 & lt; <(32-5), sizeof (unsigned long)); 
If (NULL==d) {
Printf (" Can not calloc (% d, % d). \ n ", 1 & lt; <(32-5), sizeof (unsigned long)); 
return; 
} 
srand(time(NULL)); 
for (i=0; i<100000000; I++) {
While (1) {
Ul=ulrand (); 
If (0==(d (ul> & gt; 5) & amp; (1 lu & lt; <(32) ul %))) {
D (ul> & gt; 5) |=1 & lt; <(ul % 32); 
break; 
} 
} 
If (0==I % 1000000) printf (" % % 9 d, 10 lu \ n ", I, ul); 
} 
While (1) {
Printf (" \ nInput a number: "); 
The fflush (stdout); 
The rewind (stdin); 
If (1==the scanf (" % lu ", & amp; Ul)) break; 
} 
If (d (ul> & gt; 5) & amp; (1 & lt; <(32) ul %)) printf (" Include. \ n "); 
The else printf (" Not include. \ n "); 
Free (d); 
} 
//000000000213468 533 
//001000000246805 973 
//002000000384079 964 
//003000000188232 874 
//004000000120697 784 
//005000000405838 287 
//006000000380081 245 
//007000000158042 671 
//008000000311931 368 
//009000000, 251096899 
//010000000349239 701 
//011000000336323 844 
//012000000219846 708 
//013000000187478 195 
//014000000111631 457 
//015000000192301 519 
//016000000171332 861 
//017000000292278 240 
//018000000, 694854106 
//019000000, 273255526 
//020000000, 398518467 
//021000000327756 812 
//022000000150289 424 
//023000000150241 936 
//024000000177380 660 
//025000000366842 116 
//026000000325869 879 
//027000000129184 024 
//028000000107990 028 
//029000000, 242094712 
//030000000378344 297 
//031000000259365 925 
//032000000, 962754138 
//033000000205075 654 
//034000000408452 879 
//035000000, 489250842 
//036000000, 611455230 
//037000000, 277350616 
//038000000159410 795 
//039000000322173 662 
//040000000229446 877 
//041000000254280 575 
//042000000250145 642 
//043000000237773 252 
//044000000, 635555963 
//045000000267538 666 
//046000000425690 312 
//047000000267755 514 
//048000000126320 296 
//049000000317516 920 
//050000000143265 210 
//051000000, 196156173 
//052000000247825 669 
//053000000253750 977 
//054000000118829 949 
//055000000320826 434 
//056000000226336 265 
//057000000, 313302924 
//058000000363264 578 
//059000000115892 716 
//060000000298304 230 
//061000000125204 837 
//062000000129076 720 
//063000000, 242249250 
//064000000399999 961 
//065000000, 431166416 
//066000000136947 236 
//067000000141387 330 
//068000000214784 481 
//069000000324175 409 
//070000000415065 163 
//071000000142449 573 
//072000000249600 232 
//073000000131783 455 
//074000000372170 478 
//075000000306111 466 
//076000000, 408557403 
//077000000372586 955 
//078000000380652 651 
//079000000378160 154 
//080000000332440 047 
//081000000140976 868 
//082000000, 471838899 
//083000000214198 260 
//084000000378081 738 
//085000000343027 738 
//086000000115808 750 
//087000000278578 638 
//088000000, 85604584 
//089000000270078 162 
//090000000, 584840269 
//091000000385577 719 
//092000000282653 537 
//093000000, 797877025 
//094000000224017 755 
//095000000178038 685 
//096000000281548 567 
//097000000, 489107494 
//098000000, 911680090 
//099000000367777 147 
//
//Input a number: 3677777147 
//Include.