a = []
b = []
c = []
d = []
x = [0] * 100000
20.times {|i1|
t1 = Time.now
for i2 in x
end
t2 = Time.now
a.push(t2 - t1)
}
20.times {|i1|
t1 = Time.now
x.each do |i2|
end
t2 = Time.now
b.push(t2 - t1)
}
20.times {|i1|
t1 = Time.now
x.each {|i2|
}
t2 = Time.now
c.push(t2 - t1)
}
d.push(a.inject(0) {|r,i| r += i} / a.size)
d.push(b.inject(0) {|r,i| r += i} / b.size)
d.push(c.inject(0) {|r,i| r += i} / c.size)
p d