Ruby 数组的delete_at()操作

Array#delete_at() : delete_at() 是一个Array类的方法，它可以将数组中的元素在提到的索引处删除。

语法： Array.delete_at()

参数: index – 要删除的特定索引值的值

返回: 被删除的元素, nil – 如果索引值超出了范围

代码 #1 : delete_at()方法的例子

# Ruby code for delete_at() method
 
# declaring array
a = [18, 22, 33, nil, 5, 6]
 
# declaring array
b = [1, 4, 1, 1, 88, 9]
 
# declaring array
c = [18, 22, nil, nil, 50, 6]
 
# delete
puts "delete : #{a.delete_at(5)}\n\n"
 
# delete
# printing if no such element is found
puts "delete : #{b.delete_at(0)}\n\n"
 
# delete
puts "delete : #{c.delete_at(20)}\n\n"

输出:

delete : 6

delete : 1

delete : 

代码 #2 : delete_at()方法的例子

# Ruby code for delete_at() method
 
# declaring array
a = [18, 22, 33, nil, 5, 6]
 
# declaring array
b = [1, 4, 1, 1, 88, 9]
 
# declaring array
c = [18, 22, nil, nil, 50, 6]
 
# delete
puts "delete : #{a.delete_at(5)}\n\n"
 
# delete
# printing if no such element is found
puts "delete : #{b.delete_at(0)}\n\n"
 
# delete
puts "delete : #{c.delete_at(20)}\n\n"

输出:

delete : nil

delete : 

delete : cat