Ruby 数组 reverse_each() 函数

Array#reverse_each() : reverse_each() 是一个数组类的方法，它以相反的顺序遍历自己。

语法。Array.reverse_each()

参数。数组

返回：以相反的顺序遍历自己。

例子 #1 :

# Ruby code for reverse_each() 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_each method example
puts "reverse_each() method form : #{a.reverse_each{|x| print x, " " }}\n\n"
  
puts "reverse_each() method form : #{b.reverse_each{|x| print x, " " }}\n\n"
  
puts "reverse_each() method form : #{c.reverse_each{|x| print x, " " }}\n\n"

输出:

6 5  33 22 18 reverse_each() method form : [18, 22, 33, nil, 5, 6]

9 88 1 1 4 1 reverse_each() method form : [1, 4, 1, 1, 88, 9]

6 50 22 18 reverse_each() method form : [18, 22, 50, 6]

例子 #2 :

# Ruby code for reverse_each() method
  
# declaring array
a = ["abc", "nil", "dog"]
  
# declaring array
c = ["cat", nil]
  
# declaring array
b = ["cow", nil, "dog"]
  
# reverse_each method example
puts "reverse_each() method form : #{a.reverse_each{|x| print x, " " }}\n\n"
  
puts "reverse_each() method form : #{b.reverse_each{|x| print x, " " }}\n\n"
  
puts "reverse_each() method form : #{c.reverse_each{|x| print x, " " }}\n\n"

输出:

dog nil abc reverse_each() method form : ["abc", "nil", "dog"]

dog  cow reverse_each() method form : ["cow", nil, "dog"]

 cat reverse_each() method form : ["cat", nil]