From efa134deec73a81b16b8feb8a2483e845379e486 Mon Sep 17 00:00:00 2001
From: Giacomo Radaelli <gradaellig@protonmail.com>
Date: Mon, 20 Feb 2023 16:26:28 +0100
Subject: [PATCH] Aggiunto Polinomio

---
 polinomio/.idea/.gitignore   |  3 +++
 polinomio/.idea/misc.xml     |  6 ++++++
 polinomio/.idea/modules.xml  |  8 +++++++
 polinomio/.idea/vcs.xml      |  6 ++++++
 polinomio/polinomio.iml      | 11 ++++++++++
 polinomio/src/Main.java      | 16 ++++++++++++++
 polinomio/src/Polinomio.java | 41 ++++++++++++++++++++++++++++++++++++
 7 files changed, 91 insertions(+)
 create mode 100644 polinomio/.idea/.gitignore
 create mode 100644 polinomio/.idea/misc.xml
 create mode 100644 polinomio/.idea/modules.xml
 create mode 100644 polinomio/.idea/vcs.xml
 create mode 100644 polinomio/polinomio.iml
 create mode 100644 polinomio/src/Main.java
 create mode 100644 polinomio/src/Polinomio.java

diff --git a/polinomio/.idea/.gitignore b/polinomio/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/polinomio/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/polinomio/.idea/misc.xml b/polinomio/.idea/misc.xml
new file mode 100644
index 0000000..03f397c
--- /dev/null
+++ b/polinomio/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_19" default="true" project-jdk-name="19" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/polinomio/.idea/modules.xml b/polinomio/.idea/modules.xml
new file mode 100644
index 0000000..54a6a15
--- /dev/null
+++ b/polinomio/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/polinomio.iml" filepath="$PROJECT_DIR$/polinomio.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/polinomio/.idea/vcs.xml b/polinomio/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/polinomio/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/polinomio/polinomio.iml b/polinomio/polinomio.iml
new file mode 100644
index 0000000..c90834f
--- /dev/null
+++ b/polinomio/polinomio.iml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <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/polinomio/src/Main.java b/polinomio/src/Main.java
new file mode 100644
index 0000000..d5e2354
--- /dev/null
+++ b/polinomio/src/Main.java
@@ -0,0 +1,16 @@
+public class Main {
+    public static void main(String[] args) {
+        double[] first = {1, 1, 1};
+        double[] second = {-7, 0, 2};
+        Polinomio p = new Polinomio(first);
+        Polinomio p2 = new Polinomio(second);
+
+
+        System.out.println(p);
+        System.out.println(p2);
+
+        System.out.println(new Polinomio(p2.add(p)));
+
+        System.out.println(p.y(2));
+    }
+}
\ No newline at end of file
diff --git a/polinomio/src/Polinomio.java b/polinomio/src/Polinomio.java
new file mode 100644
index 0000000..4539ace
--- /dev/null
+++ b/polinomio/src/Polinomio.java
@@ -0,0 +1,41 @@
+public class Polinomio {
+    private double[] coefficienti;
+
+    public Polinomio(double[] coefficienti) {
+        this.coefficienti = coefficienti;
+    }
+
+    public double y(double x) {
+        double y = 0;
+        for (int i = coefficienti.length - 1; i >= 0; i--) {
+            y += coefficienti[i] * Math.pow(x, i);
+        }
+
+        return y;
+    }
+
+    public double[] add(Polinomio other) {
+        if(other.coefficienti.length != coefficienti.length) throw new IllegalArgumentException();
+
+        double[] sum = new double[coefficienti.length];
+
+        for (int i = 0; i < coefficienti.length; i++) {
+            sum[i] = coefficienti[i] + other.coefficienti[i];
+        }
+
+        return sum;
+    }
+
+    @Override
+    public String toString() {
+        String testo = "";
+        for (int i = coefficienti.length - 1; i >= 0; i--) {
+            if (coefficienti[i] >= 0) {
+                testo += "+";
+            }
+            testo += coefficienti[i] + "x^" + i + " ";
+        }
+
+        return testo;
+    }
+}