Challenge No. 79: In the question table, some columns are entirely blank.
Solved using:Excel (BYCOL, FILTER), Power Query (List.Transform, Table.Column, Table.ColumnNames), Python, Python in Excel, R, and VBA.
Excel Challenges
Challenges related to Excel formulas.
Extract From Text! Part 2
Challenge No. 78: Extract all the Dates from the text provided in the question table in different formats.
Solved using:Excel, Power Query, Python, R, and VBA.
Character-Based Rhombus
Challenge No. 77: Create a formula to receive a number n as input and generate a rhombus with a diameter equal to n using “*” characters.
Solved using:Excel (DROP, IF, LAMBDA), Power Query (List.Transform), Python, R, and VBA.
Reverse Stepped Tax!
Challenge No. 76: In challenge 58, we aimed to find an efficient way to calculate the stepped tax based on the tax rates presented in the question table.
Solved using:Excel (IFERROR, INDEX, LAMBDA), Power Query (Table.AddColumn), Python, Python in Excel, and R.
Avg Delivery Time
Challenge No. 75: In the Question table, the order date for different products is provided (determined by positive quantity).
Solved using:DAX, Excel (CHOOSECOLS, FILTER, HSTACK), Power Query (Table.AddColumn, Table.Group, Table.SelectRows), Python, R, and SQL.
Determining Missing Fields
Challenge No. 74: Customer information including Name, Family, Phone, and Website is provided in the question table.
Solved using:Excel (ARRAYTOTEXT, FILTER, HSTACK), Power Query (List.Difference, List.Distinct, Text.Combine), Python, and R.
Custom Splitter (Part 2)!
Challenge No. 73: In the Question table, sales information including Date, Product Names, and quantity are provided without any separators like CH 63 with the difference that on each date, more than one transaction might provided.
Solved using:Excel (CHAR, DROP, HSTACK), Power Query (List.Skip, List.Transform, Table.AddColumn), Python, and R.
Fibonacci Sequence!
Challenge No. 72: Generate the first 18 terms of Fibonacci sequence as result table.
Solved using:Excel, Power Query, Python, R, and VBA.
Extract From Text! Part 1
Challenge No. 71: Extract all the emails from the text provided in the question table.
Solved using:Excel (FILTER, LEN, LET), Power Query (List.Transform, Text.Contains, Text.Split), Python, and R.
Coin Change Problem!
Challenge No. 70: Consider a set of coin denominations as: {1$, 2$, 5$, 10$}.
Solved using:Excel (FILTER, LAMBDA, LET), Power Query (List.Transform, Table.FromRows), Python, R, and VBA.