Ruby reverse!函数
Ruby中的reverse!函数
顾名思义，reverse!函数用于反转数组的元素。大多数情况下，我们需要反转一个数组，但如果我们借助循环来实现，程序将变得相当冗长和耗时。Ruby为你提供了逆向便利！函数，该函数生成数组的倒数。不像，Ruby中的reverse函数，reverse！在原始数组本身中生成更改。它还返回数组的相反值，该数组可以存储在相应的新数组中，以完成将来的操作。
语法：
Array_name.reverse!
现在，让我们借助程序代码以更广泛的方式理解实现概念。
范例1：
=begin
Ruby program to demonstrate implementation of reverse! function
=end
#初始化一些元素数组
Arr1 = ["apple", "mango", "banana", "apricot", "plum", "cherry"]
Arr2 = ["one","two", "three", "four", "five"]
Arr3 = [10,20]
Arr4 = [110, 210, 310, 410, 510]
Arr5 = ["C++", "Java", "C#", "Visual Basic", "Perl", "Python"]
Arr6 = ["Hrithik", "Satyam", "Amisha", "Kajal", "Wamp"]
# 调用reverse! 函数
NewArr1 = Arr1.reverse!
NewArr2 = Arr2.reverse!
NewArr3 = Arr3.reverse!
NewArr4 = Arr4.reverse!
NewArr5 = Arr5.reverse!
NewArr6 = Arr6.reverse!
#打印相应的数组
puts "#{NewArr1}"
puts "#{NewArr2}"
puts "#{NewArr3}"
puts "#{NewArr4}"
puts "#{NewArr5}"
puts "#{NewArr6}"输出结果
["cherry", "plum", "apricot", "banana", "mango", "apple"] ["five", "four", "three", "two", "one"] [20, 10] [510, 410, 310, 210, 110] ["Python", "Perl", "Visual Basic", "C#", "Java", "C++"] ["Wamp", "Kajal", "Amisha", "Satyam", "Hrithik"]
代码逻辑：
在上面的代码中，我们已经初始化了六个数组。我们正在反转的帮助下反转它们！语句并将返回的数组存储在新的对应数组中。最终，我们将打印相应的新数组。
现在，让我们看看是否可以reverse!函数是否在原始数组中产生更改。
范例2：
=begin
Ruby program to demonstrate implementation of reverse! function
=end
# 初始化一些元素数组
Arr1 = ["apple", "mango", "banana", "apricot", "plum", "cherry"]
Arr2 = ["one","two", "three", "four", "five"]
Arr3 = [10,20]
Arr4 = [110, 210, 310, 410, 510]
Arr5 = ["C++", "Java", "C#", "Visual Basic", "Perl", "Python"]
Arr6 = ["Hrithik", "Satyam", "Amisha", "Kajal", "Wamp"]
#调用 reverse! 函数
NewArr1 = Arr1.reverse!
NewArr2 = Arr2.reverse!
NewArr3 = Arr3.reverse!
NewArr4 = Arr4.reverse!
NewArr5 = Arr5.reverse!
NewArr6 = Arr6.reverse!
#打印相应的数组
puts "#{Arr1}"
puts "#{Arr2}"
puts "#{Arr3}"
puts "#{Arr4}"
puts "#{Arr5}"
puts "#{Arr6}"输出结果
["cherry", "plum", "apricot", "banana", "mango", "apple"] ["five", "four", "three", "two", "one"] [20, 10] [510, 410, 310, 210, 110] ["Python", "Perl", "Visual Basic", "C#", "Java", "C++"] ["Wamp", "Kajal", "Amisha", "Satyam", "Hrithik"]
代码逻辑：
在上面的代码中，我们试图证明这种reverse!函数会在原始数组中产生更改，并借助“puts”语句来打印数组。