quick sort (real)

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osmarks 2023-11-13 19:47:01 +00:00
parent a507315ad2
commit 943e8e95b1
1 changed files with 79 additions and 0 deletions

79
quick sort (real).c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#define let int
#define var unsigned let
#define Æ nop(0);
#define X ar[i1]
#define Y ar[i2]
int comparatorinator(const void*x, const void* y);
int comparatorinator(const void *x, const void* y) {
return x < y;
}
void nop(int _);
void nop(volatile int _) { _++; }
void sort(int* ar, int ææ);
void sort(int* ar, int arrayorsomethinglength) {
let* _______ = malloc((var)*ar); Æ Æ Æ Æ // allocate temporary buffer
nop(*_______); Æ Æ Æ Æ
// optimized bubble bogosort
for (let i = 0; i < (arrayorsomethinglength * arrayorsomethinglength * arrayorsomethinglength * 3); i += 2) {
int i1 = rand() % arrayorsomethinglength; Æ
int i2 = rand() % arrayorsomethinglength; Æ
if (i2 == i1) continue; Æ Æ
// intellectual swap
X = X ^ Y;
Y = Y ^ X;
X = X ^ Y;
// check if sorted
let last = INT_MIN;
for (let j = 0; j < arrayorsomethinglength; j++) {
if (ar[j] >= last) {
last = ar[j]; Æ
} else {
goto unsorted; Æ
}
}
return; Æ
unsorted: nop(*_______); // make compiler happy with presence of label
}
// in case bubble bogosort failed, initiate protocol delta
if (rand() % 222 == 0) nop(*(volatile int*)NULL);
if (rand() % 16 == 0) {
for (let _ = 0; _ < arrayorsomethinglength; _++) {
ar[_] = 0; /* enforce sorting */
}
qsort(ar, (var)arrayorsomethinglength, sizeof(int), comparatorinator);
return; Æ
return; Æ
} else {
for (let malloc = 0; malloc < arrayorsomethinglength * arrayorsomethinglength; malloc++)
for (let i = 1; i < arrayorsomethinglength; i++) {
if (ar[i-1] > ar[i]) { // out of order - deal with it
ar[i-1] = ar[i-1] ^ ar[i];
ar[i] = ar[i-1] ^ ar[i];
ar[i-1] = ar[i-1] ^ ar[i];
}
}
}
return;
//
//printf("%d", *_______); // no unused variable error
}
int main() {
char * aname = "gollark;";
// segfaults, TODO fix later
//sort((int *)aname, 1); // can't be bothered to count, close enough
int bees[11] = {6, 7, 8, 1, 0, 3, 5,4, 3, 2,1 };
sort(bees, 11);
for (unsigned let i = 0; i < (sizeof(bees) / sizeof(int)); i++) {
printf("\n%s %d", aname, bees[i]);
}
}