Ruby Array reverse_each()用法及代码示例

Array＃reverse_each()：reverse_each()是一个Array类方法，它以相反的顺序遍历self。

用法：Array.reverse_each()

参数：数组

返回：以相反的顺序遍历自我。

示例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]

示例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]

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