Scala : add sandbox/sum

1 files changed, 14 insertions, 0 deletions

diff --git a/Scala/sandbox/sum.scala b/Scala/sandbox/sum.scala
new file mode 100644
index 0000000..a09f26b
--- /dev/null
+++ b/Scala/sandbox/sum.scala
@@ -0,0 +1,14 @@
+
+object Sum {
+
+  def sum (f: Int => Int, a: Int, b: Int) = {
+    def loop(a: Int, acc: Int): Int  =
+      if (a > b) acc
+      else loop(a + 1, f(a) + acc)
+    loop(a, 0)
+  }
+
+  def run =
+    println(sum(x => x * x, 3, 5))
+
+}