Better memory management of arrays and test sample generation

lsort.c

@@ -1,9 +1,9 @@
 #include "./include/lsort.h"
 
-int check_sorted(lsort_array_i* array) {
+int check_sorted(lsort_array* array) {
     if (array->count <= 0) return 2;
     for (int i = 0; i < array->count - 1; i++) {
-        if (array->items[i] > array->items[i + 1]) {
+        if (array->items[i]->key > array->items[i + 1]->key) {
             return 1;
         };
     }