Ruby 数组reverse()函数
Array#reverse() : reverse() 是一个数组类的方法,它返回一个新的数组,其中包含自己的元素,顺序相反。
语法。Array.reverse()
参数。数组
返回:一个新的数组,按相反的顺序包含自己的元素。
例子 #1 :
# Ruby code for reverse() method
# declaring array
a = [18, 22, 33, nil, 5, 6]
# declaring array
b = [1, 4, 1, 1, 88, 9]
# declaring array
c = [18, 22, 50, 6]
# reverse method example
puts "reverse() method form : #{a.reverse()}\n\n"
puts "reverse() method form : #{b.reverse()}\n\n"
puts "reverse() method form : #{c.reverse()}\n\n"
输出:
reverse() method form : [6, 5, nil, 33, 22, 18]
reverse() method form : [9, 88, 1, 1, 4, 1]
reverse() method form : [6, 50, 22, 18]
例子 #2 :
# Ruby code for reverse() method
# declaring array
a = ["abc", "nil", "dog"]
# declaring array
c = ["cat", nil]
# declaring array
b = ["cow", nil, "dog"]
# reverse method example
puts "reverse() method form : #{a.reverse()}\n\n"
puts "reverse() method form : #{b.reverse()}\n\n"
puts "reverse() method form : #{c.reverse()}\n\n"
输出:
reverse() method form : ["dog", "nil", "abc"]
reverse() method form : ["dog", nil, "cow"]
reverse() method form : [nil, "cat"]