Solutions in 8 languages for week 127, part 1

1 files changed, 22 insertions, 0 deletions

diff --git a/challenge-127/abigail/lua/ch-1.lua b/challenge-127/abigail/lua/ch-1.lua
new file mode 100644
index 0000000000..517e884e6c
--- /dev/null
+++ b/challenge-127/abigail/lua/ch-1.lua
@@ -0,0 +1,22 @@
+#!/opt/local/bin/lua
+
+--
+-- See ../README.md
+--
+
+--
+-- Run as: lua ch-1.lua < input-file
+--
+
+for line in io . lines () do
+    local seen = {}
+    local out  = 1
+    for number in line : gmatch ("([-+]?[0-9]+)") do
+        if seen [number] then
+            out = 0  -- We have a duplicate
+        else
+            seen [number] = 1
+        end
+    end
+    print (out)
+end