From 2856c814c6af135dda2e7d02f1f7d2ddb0598e68 Mon Sep 17 00:00:00 2001
From: Julien Lengrand-Lambert <Julien.Lengrand-Lambert@ing.nl>
Date: Wed, 24 Oct 2018 16:26:45 +0200
Subject: [PATCH] Start functional programming in Scala book

---
 build.sbt                     |  5 +++++
 src/main/scala/myModule.scala | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 build.sbt
 create mode 100644 src/main/scala/myModule.scala

diff --git a/build.sbt b/build.sbt
new file mode 100644
index 0000000..c1be089
--- /dev/null
+++ b/build.sbt
@@ -0,0 +1,5 @@
+name := "functional-programming-scala"
+
+version := "0.1"
+
+scalaVersion := "2.12.7"
\ No newline at end of file
diff --git a/src/main/scala/myModule.scala b/src/main/scala/myModule.scala
new file mode 100644
index 0000000..5f9d0ee
--- /dev/null
+++ b/src/main/scala/myModule.scala
@@ -0,0 +1,33 @@
+object myModule {
+  def abs(n: Int): Int =
+    if (n < 0) -n else n
+
+  def factorial(n: Int): Int = {
+
+  def fact(n: Int, acc: Int) : Int = {
+    if(n == 1) acc
+    else fact(n - 1, acc * n)
+  }
+
+    fact(n, 1)
+  }
+
+  def fibonacci(n: Int) : Int = {
+    def go(n:Int, prev:Int, curr: Int): Int = {
+      if(n == 0) prev
+      else
+        go(n-1, curr, prev + curr )
+    }
+
+    go(n, 0, 1)
+  }
+
+  private def formatAbs(x: Int) ={
+    val msg = "The absolute value of %d is %d"
+    msg.format(x, abs(x))
+  }
+
+  def main(args: Array[String]): Unit ={
+    println(formatAbs(-42))
+  }
+}