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function num_to_words(n)
local digits = {"one", "two", "three", "four", "five",
"six", "seven", "eight", "nine"}
local teens = {"eleven", "twelve", "thirteen", "fourteen", "fifteen",
"sixteen", "seventeen", "eighteen", "nineteen"}
local tens = {"ten", "twenty", "thirty", "forty", "fifty",
"sixty", "seventy", "eighty", "ninety"}
local ret = ""
if n == 1000 then return digits[1] .. "thousand" end
if n >= 100 then
local hundred = math.floor(n / 100)
ret = ret .. digits[hundred] .. "hundred"
n = n - hundred * 100
if n > 0 then ret = ret .. "and" end
end
if n >= 10 then
if n == 10 then return ret .. tens[1] end
if n < 20 then
return ret .. teens[n - 10]
else
local ten = math.floor(n / 10)
ret = ret .. tens[ten]
n = n - ten * 10
end
end
if n >= 1 then
ret = ret .. digits[n]
end
return ret
end
local sum = 0
for i = 1, 1000 do
local text = num_to_words(i)
print(i .. ": " .. text .. " (" .. text:len() .. ")")
sum = sum + text:len()
end
print(sum)
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