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Implement QuickSort

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This commit is contained in:
lucielle
2026-05-08 04:33:59 -05:00
parent b6b2500944
commit de5493e7c6
5 changed files with 101 additions and 13 deletions
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19
Makefile
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@@ -19,11 +19,13 @@ LIB_INSTALL_PATH := /usr/local/lib
STATIC_BUILD_FILES := $(STATIC_BUILD_DIR)/lsort.o \
$(STATIC_BUILD_DIR)/types.o \
$(STATIC_BUILD_DIR)/radix.o
$(STATIC_BUILD_DIR)/radix.o \
$(STATIC_BUILD_DIR)/quicksort.o
DYNAMIC_BUILD_FILES := $(DYNAMIC_BUILD_DIR)/lsort.o \
$(STATIC_BUILD_DIR)/types.o \
$(STATIC_BUILD_DIR)/radix.o
$(STATIC_BUILD_DIR)/radix.o \
$(STATIC_BUILD_DIR)/quicksort.o
TEST_BUILD_FILES := $(TEST_BUILD_DIR)/test.o \
@@ -47,21 +49,24 @@ static: $(STATIC_BUILD_FILES)
$(STATIC_BUILD_DIR)/%.o: %.c | $(STATIC_BUILD_DIR)
$(CC) $(CFLAGS) -c $< -o $@
test: dynamic static $(TEST_BUILD_FILES)
$(CC) $(CFLAGS) -L$(CURDIR)/$(DYNAMIC_BUILD_DIR) -llsort -o $(TEST_BUILD_DIR)/test_dynamic $(TEST_BUILD_FILES)
$(CC) $(CFLAGS) -o $(TEST_BUILD_DIR)/test_static $(TEST_BUILD_FILES) $(STATIC_BUILD_DIR)/liblsort.a
test: $(TEST_BUILD_FILES) test_dynamic test_static
test_dynamic: dynamic $(TEST_BUILD_FILES)
$(CC) $(CFLAGS) -L$(CURDIR)/$(DYNAMIC_BUILD_DIR) -llsort -o $(TEST_BUILD_DIR)/test_dynamic $(TEST_BUILD_FILES)
@echo ""
@echo "Running dynamic test..."
@echo ""
LD_LIBRARY_PATH=$(LD_LIBRARY_PATH):$(CURDIR)/build/dynamic ./$(TEST_BUILD_DIR)/test_dynamic
test_static: static $(TEST_BUILD_FILES)
$(CC) $(CFLAGS) -o $(TEST_BUILD_DIR)/test_static $(TEST_BUILD_FILES) $(STATIC_BUILD_DIR)/liblsort.a
@echo ""
@echo "Running static test..."
@echo ""
./$(TEST_BUILD_DIR)/test_static
$(TEST_BUILD_DIR)/%.o: test/%.c | $(TEST_BUILD_DIR)

8
include/quicksort.h Normal file
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@@ -0,0 +1,8 @@
#ifndef LSORT_QUICKSORT_H
#define LSORT_QUICKSORT_H
#include "types.h"
int lsort_quicksort(lsort_array_i* array, int (*function_pointer)(int, int));
#endif

45
quicksort.c Normal file
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@@ -0,0 +1,45 @@
#include "include/lsort.h"
#include "include/types.h"
#include "include/quicksort.h"
#include <stdio.h>
typedef int (*int_function_pointer)(int, int);
static int default_compare_function(int a, int b) {
return a - b;
}
static int partition(lsort_array_i* array, int L, int R, int_function_pointer compare_function) {
int pivot = array->items[R];
int i = L - 1;
for (int j = L; j < R; j++) {
if (compare_function(array->items[j], pivot) < 0) {
i = i + 1;
lsort_array_i_swap(array, i, j);
}
}
lsort_array_i_swap(array, i + 1, R);
return i + 1;
}
static void _quicksort(lsort_array_i* array, int L, int R, int_function_pointer compare_function) {
if (L < R) {
int pivotIndex = partition(array, L, R, compare_function);
_quicksort(array, L, pivotIndex - 1, compare_function);
_quicksort(array, pivotIndex + 1, R, compare_function);
}
}
int lsort_quicksort(lsort_array_i* array, int_function_pointer compare_function) {
if (array->count < 1) {
return 0;
}
if (compare_function == NULL) compare_function = default_compare_function;
_quicksort(array, 0, (int)array->count - 1, compare_function);
return check_sorted(array) ? 1 : 0;
}

4
radix.c
View File

@@ -1,7 +1,7 @@
#include "include/types.h"
#include "include/radix.h"
int _seperate_pos_neg(lsort_array_i* array, lsort_array_i* pos_array, lsort_array_i* neg_array) {
static int _seperate_pos_neg(lsort_array_i* array, lsort_array_i* pos_array, lsort_array_i* neg_array) {
for (int i = 0; i < array->count; i++) {
if ((0x80000000 & array->items[i]) == 0x80000000) {
lsort_array_i_append(neg_array, array->items[i]);
@@ -12,7 +12,7 @@ int _seperate_pos_neg(lsort_array_i* array, lsort_array_i* pos_array, lsort_arra
return 0;
}
int _sort_items(lsort_array_i* numbers, lsort_array_i_array* buckets) {
static int _sort_items(lsort_array_i* numbers, lsort_array_i_array* buckets) {
int byte_check = 0x0000000F;
for (int i = 0; i < 8; i++) {

38
test/test.c
View File

@@ -1,10 +1,12 @@
#include "../include/types.h"
#include "../include/radix.h"
#include "../include/quicksort.h"
#include "../include/lsort.h"
#include <stdio.h>
int test_array_i_append(lsort_array_i* array) {
printf("lsort_array_i_append()...\n");
lsort_array_i_append(array, 25);
lsort_array_i_append(array, 64);
lsort_array_i_append(array, 34);
@@ -18,6 +20,8 @@ int test_array_i_append(lsort_array_i* array) {
}
int test_array_i_swap(lsort_array_i* array) {
printf("lsort_array_i_swap()...\n");
lsort_array_i_swap(array, 0, 5);
lsort_array_i_swap(array, 4, 2);
lsort_array_i_swap(array, 2, 3);
@@ -28,6 +32,8 @@ int test_array_i_swap(lsort_array_i* array) {
}
int test_append_swap() {
printf("test_append_swap()...\n");
lsort_array_i array_append_swap = {0};
if (test_array_i_append(&array_append_swap)) return 1;
@@ -50,6 +56,8 @@ int test_append_swap() {
}
int test_radix_sort() {
printf("lsort_radix()...\n");
lsort_array_i array_radix = {0};
lsort_array_i_append(&array_radix, -2);
lsort_array_i_append(&array_radix, -15);
@@ -67,14 +75,36 @@ int test_radix_sort() {
return 0;
}
int test_quicksort() {
printf("lsort_quicksort()...\n");
lsort_array_i array_quicksort = {0};
lsort_array_i_append(&array_quicksort,6);
lsort_array_i_append(&array_quicksort, 5);
lsort_array_i_append(&array_quicksort, 4);
lsort_array_i_append(&array_quicksort, 3);
lsort_array_i_append(&array_quicksort, 2);
lsort_array_i_append(&array_quicksort, 5);
lsort_array_i_append(&array_quicksort, 1);
lsort_array_i_append(&array_quicksort, 0);
lsort_quicksort(&array_quicksort, NULL);
if (check_sorted(&array_quicksort)) return 1;
return 0;
}
int main(void) {
if (
test_append_swap() ||
test_radix_sort()
test_radix_sort() ||
test_quicksort()
) return 1;
printf("Test completed successfully.\n");
printf("\nTest completed successfully.\n");
return 0;
}