Thanks for the quick reply ozo
But i dont see any diff between A and B...
But A seems to do it...
Thanks
-Oli
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Question
Generating a schedule with 30 teams
Hello
Im asking this question here (and not in the Math/Science section) because i need the code (i would prefer Java or C/C++) that will generate a sport team schedule following these rules:
case a:
- There are 30 teams
- Each teams playing 1 time against all other team (so 29 games per team)
- Cannot play twice against the same team
- Schedule must be random (if schedule is twice in a row, the results will differ)
case b:
- There are 30 teams
- Each teams playing 2 times against all other team (so 58 games per team)
- Schedule must be random (if schedule is twice in a row, the results will differ)
Big thanks to all who will try to help me out here.
Thanks
-Oli
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Answers
With the second shuffle of the teams the second half schedule should be different from the first half.
That should work unless you want it to be possible for teams 1 & 2 to be able to play back to back games or twice at any time in the season rather than once in the first 29 games and the second game in the last 29 games.
mlmcc
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by: ozoPosted on 2004-09-21 at 07:17:55ID: 12112443
#include <stdlib.h>
char *teams[]={"team1", "team2", "team3", "team4", "team5", "team6", "team7", "team8", "team9", "team10", "team11", "team12", "team13", "team14", "team15", "team16", "team17", "team18", "team19", "team20", "team21", "team22", "team23", "team24", "team25", "team26", "team27", "team28", "team29", "team30"};
char *games[15];
void shuffle(char *array[],int n){
int i;
for( i=n; --i; ){
int j = rand() % (i+1);
char *t = array[i];
array[i] = array[j];
array[j] = t;
}
}
main(){
int r,s,t;
for( s=0;s<15; s+=1 ){ games[s] = (char *)malloc(20); }
srand(time());
printf("a\n");
shuffle(teams,30);
for( r=0;r<29;r++ ){
for( s=0;s<15;s++ ){
sprintf(games[s],"%s vs. %s",teams[s?(r+s-1)%29+1:0
}
shuffle(games,15);
for( s=0;s<15;s++ ){
printf("%s\n",games[s]);
}
printf("\n");
}
printf("b\n");
shuffle(teams,30);
for( r=0;r<29;r++ ){
for( s=0;s<15;s++ ){
sprintf(games[s],"%s vs. %s",teams[s?(r+s-1)%29+1:0
}
shuffle(games,15);
for( s=0;s<15;s++ ){
printf("%s\n",games[s]);
}
printf("\n");
}
}