Challenges categorized by topic.
Challenge No. 20: The question table provides information about products, which are organized into three levels based on the length of their codes, and we want to transform this table into the result table wich each level is displayed in separate columns.
Solved using:Excel (FILTER, HSTACK, LEFT), Power Query (List.Transform), Python, and R.
Challenge No. 19: Solve the left side Sudoku table and replace X by a number based on the below rule:
Use the numbers 1 through 6 instead of X.
Solved using:Excel, Power Query, and VBA.
Challenge No. 18: Dynamically generate a sales calendar for the month entered in F3, based on data from the given table.
Solved using:Excel, Power Query, and R.
Challenge No. 16: Change the format of the data from the question table to that of the result table.
Solved using:Excel, Power Query, and R.
Challenge No. 15: It may seem unreasonable, but the manager has requested that I convert the question table into the result table, ensuring that information for each product is provided in individual rows.
Solved using:Excel, Power Query, and R.
Challenge No. 14: Create a list of products sold in all the months throughout the year.
Solved using:Excel (COUNT, FILTER, LAMBDA), Power Query (Date.Month, List.Distinct, List.Transform), and R.
Challenge No. 13: Determine how frequently Words from words list are comes together in article titles.
Solved using:Excel (CHOOSEROWS, IF, LAMBDA), Power Query (Table.AddColumn), and R.
Challenge No. 12: In every decision-making process, the first step is to normalize the data.
Solved using:Excel (BYCOL, LAMBDA), Google Sheets, Power Query (List.Transform, Table.FromColumns, Table.ToColumns), R, and VBA.
Challenge No. 11: Extract all item codes that are repeated at least in 3 out of 4 lists presented in the question table.
Solved using:Excel (BYCOL, FILTER, LAMBDA), Power Query (List.Combine, List.Distinct, List.Transform), and R.
Challenge No. 10: The question table shows inventory levels for materials required to produce products, with specific combinations (1 A, 2 B, 3 C per product).
Solved using:Excel (HSTACK, LAMBDA, LET), Power Query (Table.AddColumn, Table.Group), and R.
