local time = require("time")

local function strrep(str, n)
	local rep = ""
	for i = 1, n do
		rep = rep .. str
	end
	return rep
end

local function concatrep(str, n)
	local rep = {}
	for i = 1, n do
		rep[n] = str
	end
	return table.concat(rep)
end

local str = "gnu"
local iter = 100000

print("str", str)
print("iter", iter)

old = time.utime()
print("string.rep (C)")
string.rep(str, iter)
print(time.utime() - old)

old = time.utime()
print("concat")
print(concatrep(str, iter))
print(time.utime() - old)

local old = time.utime()
print("..")
strrep(str, iter)
print(time.utime() - old)