Max exp value with paren done!

Wow, translating the algo into code was tricky! Debugging was
challenging, frustrating, and ultimately rewarding. Two debugging
takeaways I can think of now:
1. Make the test case small, so it's easy to trace the whole thing
through;
2. For bigger test case, the example from lecture notes was helpful. I
just needed to set breakpoint intelligently to see the min and max
arrays.

Also, initializing the min and max value, then use the Math.min and
Math.max was interesting. I may need to remember that, that's why I have
the notes here!

1 files changed, 35 insertions, 0 deletions

diff --git a/AlgoDesignAndTechniqueEdxJava/tests/PlacingParenTest.java b/AlgoDesignAndTechniqueEdxJava/tests/PlacingParenTest.java
new file mode 100644
index 0000000..91885e9
--- /dev/null
+++ b/AlgoDesignAndTechniqueEdxJava/tests/PlacingParenTest.java
@@ -0,0 +1,35 @@
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+class PlacingParenTest {
+
+    @Test
+    void test() {
+        String exp = "1+5";
+        assertEquals(6, PlacingParen.getMaxValue(exp));
+        ;
+    }
+
+    @Test
+    void test1() {
+        String exp = "5-8+7*4-8+9";
+        assertEquals(200, PlacingParen.getMaxValue(exp));
+        ;
+    }
+
+    @Test
+    void test2() {
+        String exp = "1+2-3*4-5";
+        assertEquals(6, PlacingParen.getMaxValue(exp));
+        ;
+    }
+
+    @Test
+    void test3() {
+        String exp = "1+2*3";
+        assertEquals(9, PlacingParen.getMaxValue(exp));
+        ;
+    }
+
+}