- Added more guest contributions by Laurent Rosenfeld.

1 files changed, 20 insertions, 0 deletions

diff --git a/challenge-153/laurent-rosenfeld/ruby/ch-2.rb b/challenge-153/laurent-rosenfeld/ruby/ch-2.rb
new file mode 100644
index 0000000000..a5118ea7c7
--- /dev/null
+++ b/challenge-153/laurent-rosenfeld/ruby/ch-2.rb
@@ -0,0 +1,20 @@
+def is_factorion(fact, num)
+    sum = 0
+    i = num
+    while i > 0
+        i, d = i.divmod(10)
+        sum += fact[d]
+    end
+    return num == sum
+end
+
+fact = [1]
+for n in 1..10
+    fact.push(n * fact[n - 1])
+end
+for j in 1..50000
+    if is_factorion(fact, j)
+        printf "%d ", j
+    end
+end
+printf("\n")