From b4a54647ed453d5a69e6e9b629c971f190c7d247 Mon Sep 17 00:00:00 2001
From: Psycotik <sgtpsycotik@gmail.com>
Date: Sun, 25 Feb 2024 00:49:40 -0800
Subject: [PATCH] Created Quadratic.java

---
 .idea/misc.xml          |  2 +-
 .idea/vcs.xml           |  6 ++++
 Java-Assignment-005.iml |  1 +
 src/Quadratic.java      | 64 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 72 insertions(+), 1 deletion(-)
 create mode 100644 .idea/vcs.xml
 create mode 100644 src/Quadratic.java

diff --git a/.idea/misc.xml b/.idea/misc.xml
index 639900d..69ace3f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Java-Assignment-005.iml b/Java-Assignment-005.iml
index b46c0dd..e1006ff 100644
--- a/Java-Assignment-005.iml
+++ b/Java-Assignment-005.iml
@@ -5,6 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/src/Quadratic.java b/src/Quadratic.java
new file mode 100644
index 0000000..2e8cd55
--- /dev/null
+++ b/src/Quadratic.java
@@ -0,0 +1,64 @@
+import java.util.Scanner;
+
+/**
+ *
+ * @author James Ward
+ *
+ * @since 02/25/2024
+ *
+ */
+
+public class Quadratic {
+
+    public static void main(String[] args) {
+
+        System.out.println("Enter positive integer values for variables a, b, and c in to calculate to roots of the quadratic equation ax^2 + bx + c = 0. Positive integers only.");
+
+        // prompt for each variable
+        int a = userInput("a");
+        int b = userInput("b");
+        int c = userInput("c");
+
+        // calculate roots
+        double[] roots = quadraticEquation(a, b, c);
+        System.out.printf("The roots of the quadratic equation are: %.2f and %.2f%n", roots[0], roots[1]);
+
+    }
+
+    public static int userInput(String variableString) {
+
+        Scanner in = new Scanner(System.in);
+
+        System.out.println("Enter value for " + variableString + ": ");
+
+        if (!in.hasNextInt()) {
+            String message = in.next();
+            System.err.println("Input " + message + " is not a positive integer.");
+            return userInput(variableString);
+        }
+
+        return in.nextInt();
+    }
+
+    public static double[] quadraticEquation(int a, int b, int c) {
+
+        // check for division by zero
+        if (a == 0) {
+            System.err.println("Invalid input: 'a' can't be zero");
+        }
+
+        // calculate the discriminant
+        double discriminant = b * b - 4 * a * c;
+
+        // check for negative discriminant
+        if (discriminant < 0) {
+            System.err.println("No real roots: Discriminant is negative");
+        }
+
+        // Calculate the solutions
+        double root1 = (-b + Math.sqrt(discriminant)) / (2 * a);
+        double root2 = (-b - Math.sqrt(discriminant)) / (2 * a);
+
+        return new double[]{root1, root2};
+    }
+}