Ruby 数组类的flatten!()函数
flatten!() 是一个数组类的方法,它返回扁平化的数组,如果不需要修改则返回nil。
语法。Array.flatten!()
参数。数组
返回:扁平化的数组,如果不需要修改则返回nil
例子 #1 :
# Ruby code for flatten!() method
# declaring array
a = [[18, 22],
[ 33, nil, 5, 6]]
# declaring array
b = [[[1, 4, 1, 1, 88, 9]]]
# declaring array
c = [18, 22, nil, nil, 50, 6]
# flatten!
puts "flatten! : #{a.flatten!()}\n\n"
# flatten!
puts "flatten! : #{b.flatten!()}\n\n"
# flatten!
puts "flatten! : #{c.flatten!()}\n\n"
输出:
flatten! : [18, 22, 33, nil, 5, 6]
flatten! : [1, 4, 1, 1, 88, 9]
flatten! :
例子 #2 :
# Ruby code for flatten!() method
# declaring array
a = [["abc", "nil", ],
["dog"]]
# declaring array
b = [[[["cow", nil, "dog"]]]]
# declaring array
c = ["cat", nil, nil]
# flatten!
puts "flatten! : #{a.flatten!()}\n\n"
# flatten!
puts "flatten! : #{b.flatten!()}\n\n"
# flatten!
puts "flatten! : #{c.flatten!()}\n\n"
输出:
flatten! : ["abc", "nil", "dog"]
flatten! : ["cow", nil, "dog"]
flatten! :