Init commit

Leap, Difference of Squares, Grains, Collatz Conjecture, Queen Attack,
Darts, Hamming, and Space Age completed yesterday.

Binary and Linked List completed today.

knapsack/test_knapsack.c

@@ -0,0 +1,133 @@
+#include <stddef.h>
+#include "test-framework/unity.h"
+#include "knapsack.h"
+
+void setUp(void)
+{
+}
+
+void tearDown(void)
+{
+}
+
+static void test_no_items(void)
+{
+   item_t *items = NULL;
+   size_t item_count = 0;
+   unsigned int maximum_weight = 100;
+
+   TEST_ASSERT_EQUAL_UINT(0, maximum_value(maximum_weight, items, item_count));
+}
+
+static void test_one_item_too_heavy(void)
+{
+   TEST_IGNORE();   // delete this line to run test
+
+   item_t items[] = {
+      { .weight = 100, .value = 1 },
+   };
+   size_t item_count = sizeof(items) / sizeof(items[0]);
+   unsigned int maximum_weight = 10;
+
+   TEST_ASSERT_EQUAL_UINT(0, maximum_value(maximum_weight, items, item_count));
+}
+
+static void test_five_items_cannot_be_greedy_by_weight(void)
+{
+   TEST_IGNORE();
+
+   item_t items[] = {
+      { .weight = 2, .value = 5 },   { .weight = 2, .value = 5 },
+      { .weight = 2, .value = 5 },   { .weight = 2, .value = 5 },
+      { .weight = 10, .value = 21 },
+   };
+   size_t item_count = sizeof(items) / sizeof(items[0]);
+   unsigned int maximum_weight = 10;
+
+   TEST_ASSERT_EQUAL_UINT(21, maximum_value(maximum_weight, items, item_count));
+}
+
+static void test_five_items_cannot_be_greedy_by_value(void)
+{
+   TEST_IGNORE();
+
+   item_t items[] = {
+      { .weight = 2, .value = 20 },  { .weight = 2, .value = 20 },
+      { .weight = 2, .value = 20 },  { .weight = 2, .value = 20 },
+      { .weight = 10, .value = 50 },
+   };
+   size_t item_count = sizeof(items) / sizeof(items[0]);
+   unsigned int maximum_weight = 10;
+
+   TEST_ASSERT_EQUAL_UINT(80, maximum_value(maximum_weight, items, item_count));
+}
+
+static void test_example_knapsack(void)
+{
+   TEST_IGNORE();
+
+   item_t items[] = {
+      { .weight = 5, .value = 10 },
+      { .weight = 4, .value = 40 },
+      { .weight = 6, .value = 30 },
+      { .weight = 4, .value = 50 },
+   };
+   size_t item_count = sizeof(items) / sizeof(items[0]);
+   unsigned int maximum_weight = 10;
+
+   TEST_ASSERT_EQUAL_UINT(90, maximum_value(maximum_weight, items, item_count));
+}
+
+static void test_eight_items(void)
+{
+   TEST_IGNORE();
+
+   item_t items[] = {
+      { .weight = 5, .value = 10 },   { .weight = 25, .value = 350 },
+      { .weight = 35, .value = 400 }, { .weight = 45, .value = 450 },
+      { .weight = 5, .value = 20 },   { .weight = 25, .value = 70 },
+      { .weight = 3, .value = 8 },    { .weight = 2, .value = 5 },
+      { .weight = 2, .value = 5 },
+   };
+   size_t item_count = sizeof(items) / sizeof(items[0]);
+   unsigned int maximum_weight = 104;
+
+   TEST_ASSERT_EQUAL_UINT(900,
+                          maximum_value(maximum_weight, items, item_count));
+}
+
+static void test_fifteen_items(void)
+{
+   TEST_IGNORE();
+
+   item_t items[] = {
+      { .weight = 70, .value = 135 },  { .weight = 73, .value = 139 },
+      { .weight = 77, .value = 149 },  { .weight = 80, .value = 150 },
+      { .weight = 82, .value = 156 },  { .weight = 87, .value = 163 },
+      { .weight = 90, .value = 173 },  { .weight = 94, .value = 184 },
+      { .weight = 98, .value = 192 },  { .weight = 106, .value = 201 },
+      { .weight = 110, .value = 210 }, { .weight = 113, .value = 214 },
+      { .weight = 115, .value = 221 }, { .weight = 118, .value = 229 },
+      { .weight = 120, .value = 240 },
+   };
+   size_t item_count = sizeof(items) / sizeof(items[0]);
+   unsigned int maximum_weight = 750;
+
+   TEST_ASSERT_EQUAL_UINT(1458,
+                          maximum_value(maximum_weight, items, item_count));
+}
+
+int main(void)
+{
+   UNITY_BEGIN();
+
+   RUN_TEST(test_no_items);
+   RUN_TEST(test_one_item_too_heavy);
+   RUN_TEST(test_five_items_cannot_be_greedy_by_weight);
+   RUN_TEST(test_five_items_cannot_be_greedy_by_value);
+   RUN_TEST(test_example_knapsack);
+   RUN_TEST(test_eight_items);
+   RUN_TEST(test_fifteen_items);
+
+   return UNITY_END();
+}