红宝石 |推（）函数

Ruby 中的 push()函数用于将给定元素推送到给定数组的末尾，并返回包含推送元素的数组本身。

Syntax: push(Elements)

Parameters:
Elements : These are the elements which are to be added at the end of the given array.

Returns: the array of pushed element.

示例 1：

# Initializing some arrays of elements
Array1 = [1, 2, 3, 4]
Array2 = ["a", "b", "c"]
Array3 = ["gfg", "Geeks", "GeeksforGeeks"]
   
# Calling push() function
A = Array1.push(5, 6, 7)                
B = Array2.push("d", "e", "f")               
C = Array3.push("Geek")  
   
# Printing the array of pushed element
puts "#{A}"
puts "#{B}"
puts "#{C}"

输出：

[1, 2, 3, 4, 5, 6, 7]
["a", "b", "c", "d", "e", "f"]
["gfg", "Geeks", "GeeksforGeeks", "Geek"]

示例 2：

# Initializing some arrays of elements
Array1 = [10, 20, 30, 40]
Array2 = ["Z", "Y", "X"]
Array3 = ["ab", "abc", "abcd"]
  
# Initializing some elements 
# which are to be pushed
p = 50, 60
q = "W", "V", "U"
r = "abcde", "abcdef"
  
# Calling push() function
A = Array1.push(p)                
B = Array2.push(q)               
C = Array3.push(r)  
  
# Printing the array of pushed element
puts "#{A}"
puts "#{B}"
puts "#{C}"

输出：

[10, 20, 30, 40, [50, 60]]
["Z", "Y", "X", ["W", "V", "U"]]
["ab", "abc", "abcd", ["abcde", "abcdef"]]

注意：在上面的例子中，可以看出如果我们初始化参数
函数在一个单独的变量中，然后它将输出作为上面显示的数组中的一个数组。

参考： https://devdocs.io/ruby~2.5/array#method-i-push