Ruby Array reverse()用法及代碼示例

Array＃reverse()：reverse()是一種Array類方法，它以相反的順序返回一個包含自身元素的新數組。

用法：Array.reverse()

參數：數組

返回：一個包含自身元素的逆序新數組。

示例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"

輸出：

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]

示例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"

輸出：

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

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

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

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