1 files changed, 27 insertions, 0 deletions
diff --git a/challenge-112/abigail/ruby/ch-1.rb b/challenge-112/abigail/ruby/ch-1.rb
new file mode 100644
index 0000000000..e26463cb68
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+++ b/challenge-112/abigail/ruby/ch-1.rb
@@ -0,0 +1,27 @@
+#!/usr/bin/ruby
+
+#
+# See ../README.md
+#
+ 
+#
+# Run as: ruby ch-1.rb < input-file
+#
+
+ARGF . each_line do
+    | line |
+    parts = line . strip() . split (/\/+/)
+    parts2 = []
+    parts . each do
+        | part |
+        if part == "" or part == "."   # Skip empty parts and current directory
+            next
+        end
+        if part == ".."                # Remove parent directory
+            parts2 . pop
+            next
+        end
+        parts2 . push (part)           # Add part
+    end
+    puts ("/" + parts2 . join("/"))    # Print result
+end