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# 创建并打印数组
array = ['one', 'two', 'three']
p array # => ["one", "two", "three"]
p array[1] # => "two"

# 增加数组元素
# 我们可以这样的
array << ["four"]
p array # => ["one", "two", "three", "four"]
# 还可以这样
array.concat(["five"])
p array # =>  ["one", "two", "three", "four", "five"]

# 获取数组的数量
p array.count # => 5
# 获取数组特定元素的数量
array << ["two"] # =>  ["one", "two", "three", "four", "five", "two"]
p array("two").cout # => 2



# 清空数组
array.clear
p array # => []