Ruby reverse 函数
Ruby中的 reverse函数
顾名思义，在ruby中，reverse函数用于反转数组，但要稍加扭转，它将反转数组并将其存储到新数组中。反向函数对原始数组不起作用。通过此功能，无论数组的顺序如何，该顺序都可以颠倒。
reverse函数不允许任何参数。它的返回类型是一个数组，显然，返回的数组与实际数组相反。
语法：
new_array = old_array.reverse
现在，让我们借助示例更广泛地了解反向函数的实现。
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"]
#调用函数
NewArr1 = Arr1.reverse
NewArr2 = Arr2.reverse
NewArr3 = Arr3.reverse
NewArr4 = Arr4.reverse
NewArr5 = Arr5.reverse
NewArr6 = Arr6.reverse
#打印新的反向数组
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"]
在上面的示例中，您可以观察到我们已经初始化了六个数组，然后在新数组中调用了反向函数。reverse函数以相反的顺序返回数组，并将值存储在新的对应数组中。
现在，让我们通过参考下面给出的示例来查找由reverse函数所做的更改是否反映在原始数组中，
范例2：
=begin
Ruby program to demonstrate implementation
of reverse function
=end
# 初始化元素数组
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"]
# 调用反向函数
NewArr1 = Arr1.reverse
NewArr2 = Arr2.reverse
NewArr3 = Arr3.reverse
NewArr4 = Arr4.reverse
NewArr5 = Arr5.reverse
NewArr6 = Arr6.reverse
# 打印原始数组
puts "#{Arr1}"
puts "#{Arr2}"
puts "#{Arr3}"
puts "#{Arr4}"
puts "#{Arr5}"
puts "#{Arr6}"输出结果
["apple", "mango", "banana", "apricot", "plum", "cherry"] ["one", "two", "three", "four", "five"] [10, 20] [110, 210, 310, 410, 510] ["C++", "Java", "C#", "Visual Basic", "Perl", "Python"] ["Hrithik", "Satyam", "Amisha", "Kajal", "Wamp"]
您可以观察到两个输出之间的差异。借助示例，实践证明了reverse函数不会影响原始数组。