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-rw-r--r--challenge-153/abigail/lua/ch-2.lua30
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diff --git a/challenge-153/abigail/lua/ch-2.lua b/challenge-153/abigail/lua/ch-2.lua
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+#!/opt/local/bin/lua
+
+--
+-- See https://theweeklychallenge.org/blog/perl-weekly-challenge-153
+--
+
+--
+-- Run as: lua ch-2.lua < input-file
+--
+
+local fac = {}
+ fac [0] = 1
+
+for n = 1, 9 do
+ fac [n] = n * fac [n - 1]
+end
+
+for num in io . lines () do
+ num = tonumber (num)
+ local n = num
+ local sum = 0
+ while n > 0 do
+ sum = sum + fac [n % 10]
+ n = math . floor (n / 10)
+ end
+ if sum == num
+ then print (1)
+ else print (0)
+ end
+end