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24 - SelectSearch/quickselect.c

@@ -0,0 +1,59 @@
+#include "General.h"
+
+
+void CopyPointers(int * start_dest_index, int * start_src_index, unsigned int length)
+{
+    unsigned int counter;
+    for (counter = ZERO; counter < length; counter++)
+    {
+        *(start_dest_index++) = *(start_src_index++);
+    }
+}
+
+int GetHaziyon(int * ptr_arr, unsigned int length)
+{
+    int haziyon;
+    if (length % TWO)
+    {
+        haziyon = *(ptr_arr + (length / TWO) + ONE);
+    }
+    else
+    {
+        haziyon = (*(ptr_arr + (length / TWO)) + *(ptr_arr + (length / TWO) + ONE)) / TWO;
+    }
+    
+    return (haziyon);
+}
+
+unsigned int SortFiveValuesAndGetHaziyon(int * ptr_arr, unsigned int length, int ** ptr_haziyons, void sort(int *, unsigned int))
+{
+    int haziyon;
+    unsigned int length_arr_haziyons = ONE;
+    if (length > FIVE)
+    {
+        sort(ptr_arr + length - FIVE, FIVE);
+        haziyon = GetHaziyon(ptr_arr + length - FIVE, FIVE);
+        length_arr_haziyons = SortFiveValuesAndGetHaziyon(ptr_arr, length - FIVE, ptr_haziyons, sort) + ONE;
+        *ptr_haziyons = (int *)realloc(*ptr_haziyons, sizeof(int) * length_arr_haziyons);
+    }
+    else
+    {
+        sort(ptr_arr, length);
+        haziyon = GetHaziyon(ptr_arr, length);
+        *ptr_haziyons = (int *)malloc(sizeof(int));
+    }
+    *(ptr_haziyons + length_arr_haziyons - ONE) = haziyon;
+
+    return (length_arr_haziyons);
+}
+
+int * Select(int * ptr_arr, unsigned int length, int k)
+{
+    unsigned int new_length;
+    int * temp_arr;
+}
+
+void main(void)
+{
+
+}