one-file-projects/bogosort.c

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2016-02-21 17:23:40 +01:00
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void shuffle(int* data, unsigned int n) {
for(unsigned int i = 0; i < n - 1; i++) {
unsigned int j = i + rand() % (n - i);
int tmp = data[i];
data[i] = data[j];
data[j] = tmp;
}
}
int sorted(int* data, unsigned int n) {
for(unsigned int i = 1; i < n; i++) {
if(data[i-1] > data[i]) return 0;
}
return 1;
}
void bogosort(int* data, unsigned int n) {
unsigned int i = 1;
do {
shuffle(data, n);
i++;
} while(!sorted(data,n));
printf("%u iterations for %u elements\n", i, n);
}
int main( int argc, char *argv[] ) {
srand((size_t) time(NULL));
int data[10] = { 4,2,1,3,8,7,5,6,9,0 };
bogosort(data,10);
return 0;
}