👉 Demicolumn is a term used in computer science to describe a column or row of data that is not contiguous, but rather contains multiple rows with identical values. This can occur when the data are stored in a table format, such as in SQL databases or Excel spreadsheets. In terms of programming languages like Python, it refers to a type of column where the first element and last element are equal, but there are no other elements between them. For example, if you have an array of integers
