Ruby 矩阵类的insert()函数
insert()是一个数组类方法,通过在指定的索引值处插入一个给定的元素来返回数组。
语法。Array.insert()
参数。数组
索引
元素
返回:插入元素的特定索引值
例子 #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]
例子 #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]