Buggy FractionalKnapsack for now. Work on a python version first.

I may need to do an exhaustive testing.

1 files changed, 31 insertions, 0 deletions

diff --git a/AlgoDesignAndTechniqueEdxJava/tests/FractionalKnapsackTest.java b/AlgoDesignAndTechniqueEdxJava/tests/FractionalKnapsackTest.java
new file mode 100644
index 0000000..54dd4f7
--- /dev/null
+++ b/AlgoDesignAndTechniqueEdxJava/tests/FractionalKnapsackTest.java
@@ -0,0 +1,31 @@
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+class FractionalKnapsackTest {
+
+	@Test
+	void test1() {
+		int[] values = new int[] { 60, 100, 120 };
+		int[] weights = new int[] { 20, 50, 30 };
+		int capacity = 50;
+		assertEquals(180.0000, FractionalKnapsack.getOptimalValue(capacity, values, weights));
+	}
+
+	@Test
+	void test2() {
+		int[] values = new int[] { 60, 100, 120 };
+		int[] weights = new int[] { 20, 50, 30 };
+		int[] sortedIndexArray = new int[] { 1, 0, 2 };
+		assertArrayEquals(sortedIndexArray, FractionalKnapsack.getSortedIndexArray(values, weights));
+	}
+
+	@Test
+	void test3() {
+		int[] values = new int[] { 500};
+		int[] weights = new int[] { 30 };
+		int capacity = 10;
+		assertEquals(166.6667, FractionalKnapsack.getOptimalValue(capacity, values, weights), 0.0001);
+	}
+
+}