1 files changed, 25 insertions, 0 deletions
diff --git a/challenge-130/abigail/lua/ch-1.lua b/challenge-130/abigail/lua/ch-1.lua
new file mode 100644
index 0000000000..6b5479291b
--- /dev/null
+++ b/challenge-130/abigail/lua/ch-1.lua
@@ -0,0 +1,25 @@
+#!/opt/local/bin/lua
+
+--
+-- See ../README.md
+--
+
+--
+-- Run as: lua ch-1.lua < input-file
+--
+
+for line in io . lines () do
+    local numbers = {}
+    for n in line : gmatch ("([1-9][0-9]*)") do
+        if numbers [n] == nil then
+            numbers [n] = 1
+        else
+            numbers [n] = numbers [n] + 1
+        end
+    end
+    for number, count in pairs (numbers) do
+        if numbers [number] % 2 == 1 then
+            print (number)
+        end
+    end
+end