Merge remote-tracking branch 'upstream/master'

1 files changed, 51 insertions, 0 deletions

diff --git a/challenge-003/abigail/lua/ch-2.lua b/challenge-003/abigail/lua/ch-2.lua
new file mode 100644
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+++ b/challenge-003/abigail/lua/ch-2.lua
@@ -0,0 +1,51 @@
+#!/opt/local/bin/lua
+
+--
+-- See ../README.md
+--
+
+--
+-- Run as: lua ch-2.lua < input-file
+--
+
+
+--
+-- Iterate over the input
+--
+for line in io . lines () do
+    local rows = tonumber (line)
+
+    --
+    -- Create and print row 0
+    --
+    local row = {1}
+    print "1"
+
+    local r
+    for r = 1, rows do
+        -- 
+        -- Create a new row
+        --
+        local new = {}
+        for i = 1, r + 1 do
+            sum = 0;
+            if i > 1
+            then sum = sum + row [i - 1]
+                 io . write (" ")
+            end
+            if i <= r
+            then sum = sum + row [i]
+            end
+            --
+            -- Assign new element, and print it
+            --
+            new [i] = sum
+            io . write (sum)
+        end
+        io . write ("\n")
+        --
+        -- New row becomes current row
+        --
+        row = new
+    end
+end