for n in 0..10000000 
end
 
num=0
ts=Time.now
for n in 0..10000000
  num+=n
end
te=Time.now
tms=(te.to_f * 1000-ts.to_f * 1000).to_i
puts "count for 1-10000000 need Time(#{(tms)})";
 
num=0
ts=Time.now
10000000.times do |i|
 num+=i  
end
te=Time.now
tms=(te.to_f * 1000-ts.to_f * 1000).to_i
puts "count times 1-10000000 need Time(#{(tms)})";
 
# str=""
# ts=Time.now
# 10000000.times do |i|
#  str+=i.to_s
# end
# te=Time.now
# tms=(te.to_f * 1000-ts.to_f * 1000).to_i
puts "+= times 1-10000000 need Time(超過一分鐘)";
 
# str=""
# ts=Time.now
# 10000000.times do |i|
#  str="#{str}#{i}"
# end
# te=Time.now
# tms=(te.to_f * 1000-ts.to_f * 1000).to_i
puts "\# times 1-10000000 need Time(超過一分鐘)";
 
str=""
ts=Time.now
10000000.times do |i|
 str << i.to_s
end
te=Time.now
tms=(te.to_f * 1000-ts.to_f * 1000).to_i
puts "<< times 1-10000000 need Time(#{(tms)})";
 
 

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