Challenge No. 691: Give the rank1 and rank2 as shown.
Solved using: Python.
Table.AddIndexColumn
Adds an index column to a table in Power Query.
Transpose Vertical to Horizontal
Challenge No. 202: Transpose the problem table into result table.
Solved using: R.
Fill Down and Up by Customer
Challenge No. 147: Fill down / up all 4 columns for different customer IDs.
Solved using: Python.
Custom Grouping! Part 19
Challenge No. 197: Group the rows sequentially from the top, ensuring that each group contains exactly one missing date.
Solved using:Excel (IF, LET, SCAN), Google Sheets, Power Query (Table.Group, Table.AddIndexColumn), Python, Python in Excel, and R.
Custom Grouping! Part 17
Challenge No. 187: Group the rows until encountering a missing date.
Solved using:Excel (DROP, GROUPBY, IF), Google Sheets, Power Query (Table.Group, Table.AddColumn, Table.AddIndexColumn), Python, Python in Excel, and R.
Custom Grouping! Part 16
Challenge No. 176: Group every five rows of the question table and then provide some of quantity for each group.
Solved using:Excel (GROUPBY, HSTACK, LAMBDA), Google Sheets, Power Query (Table.Group, List.Transform, Table.AddIndexColumn), Python, Python in Excel, and R.
Custom Grouping! Part 15
Challenge No. 173: The Question table contains transactions recorded on different dates.
Solved using:Excel (HSTACK, LAMBDA, LET), Google Sheets, Power Query (Table.Group, Date.Month, Table.AddIndexColumn), Python, Python in Excel, and R.
Custom Grouping! Part 14
Challenge No. 168: The stock prices for the given dates are provided in the question table.
Solved using:Excel (IF, LAMBDA, LET), Google Sheets, Power Query (Table.Group, Table.AddIndexColumn, Table.ExpandTableColumn), Python, Python in Excel, and R.
Add Hierarchical Location Indexes
Challenge No. 88: Add the indexes for Country, State and City.
Solved using: Python in Excel.
Add Index Column! Part 5
Challenge No. 154: Add an index column to the question table, which has the same index value for every consecutive date.
Solved using:Excel (DROP, IF, LAMBDA), Google Sheets, Power Query (Table.AddColumn, Table.AddIndexColumn, Table.Column), Python, Python in Excel, and R.