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" RubyCopy 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] RubyCopy 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" RubyCopy 输出: insert : ["abc", "nil", 5, "dog"] insert : ["cow", nil, 4, 1, 1, "dog"] insert : ["cat", nil, nil, nil, 4] RubyCopy
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