Challenge No. 229: Find all double base Palindrome Numbers.
Solved using: Python in Excel.
LAMBDA
Creates custom reusable functions in Excel.
Encrypt Using Affine Cipher
Challenge No. 232: Affine Cipher
This is a kind of Caesar’s Cipher.
Solved using: Excel VBA.
Classify Deficient Perfect Abundant
Challenge No. 228: Take a positive integer n and add its positive divisors (let’s denote it by S)
Classify the numbers as per given criteria:
If S < 2n = Deficient Number
If S = 2n = Perfect Number
If S > 2n = Abundant Number
Ex.
Solved using: Python in Excel.
Decode Numbered Character Words
Challenge No. 227: In column A, characters are separated by 1.
Solved using: Power Query.
First Date Of Months!
Challenge No. 144: From the provided “transactions” table, filter the first transaction for each.
Solved using:Excel (DROP, FILTER, LAMBDA), Google Sheets, Power Query (Date.Month, Table.AddColumn, Table.Group), Python, Python in Excel, and R.
Sort Numbers Leave Text
Challenge No. 226: Sort the numbers in given strings and leave the non numbers as they are.
Solved using: Power Query.
Find Kangaroo and Joey Words
Challenge No. 225: Kangaroo words are those words which contain the other words within themselves.
Solved using: Excel VBA.
Cap and Carry Running Totals
Challenge No. 71: Find the running total for the groups.
Solved using: Python in Excel.
Even Result by Position Sum
Challenge No. 224: List the numbers where following result is an even number
Result = Sum of Digits at Odd positions – Sum of Digits at Even positions
Positions start at 1 not at 0.
Solved using: Python in Excel.
Custom Grouping! Part 9
Challenge No. 143: Groups the sales values every week starting from Friday days starting from 1/1/2024.
Solved using:Excel (GROUPBY, LAMBDA, LET), Google Sheets, Power Query (Table.Group, Date.WeekOfYear, Table.AddColumn), Python, Python in Excel, and R.