红宝石 |数组类 insert()函数
insert()是一个 Array 类方法,它通过在指定索引值处插入给定元素来返回数组。
Syntax: Array.insert()
Parameter: Array
index
element
Return: insert elements the specific index value
示例 #1:
# Ruby code for insert() 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]
# insert
puts "insert : #{a.insert(2, 5)}\n\n"
# insert
puts "insert : #{b.insert(2, 4, 1, 1)}\n\n"
# insert
puts "insert : #{c.insert(4, 4)}\n\n"
输出 :
insert : [18, 22, 5, 33, nil, 5, 6]
insert : [1, 4, 4, 1, 1, 1, 1, 88, 9]
insert : [18, 22, nil, nil, 4, 50, 6]
示例 #2:
# Ruby code for insert() method
# declaring array
a = ["abc", "nil", "dog"]
# declaring array
b = ["cow", nil, "dog"]
# declaring array
c = ["cat", nil, nil]
# insert
puts "insert : #{a.insert(2, 5)}\n\n"
# insert
puts "insert : #{b.insert(2, 4, 1, 1)}\n\n"
# insert
puts "insert : #{c.insert(4, 4)}\n\n"
输出 :
insert : ["abc", "nil", 5, "dog"]
insert : ["cow", nil, 4, 1, 1, "dog"]
insert : ["cat", nil, nil, nil, 4]