Challenge No. 245: Get names in a sorted order under subject columns.
Solved using: Python in Excel.
SEQUENCE
Generates a sequence of numbers in an array in Excel.
List All Emirp Numbers
Challenge No. 538: An emirp (prime spelled backward = emirp) number is a prime number and its reversal is also a prime number but this is not a palindromic prime.
Solved using: Python in Excel.
Unstack Columns to Rows
Challenge No. 243: Transform the problem table into result table as shown.
Solved using: Python.
Fill 5×5 Grid with Index
Challenge No. 536: Put values in a 5×5 grid as per their rows and columns positions.
Solved using: R.
Draw Grid by Rows/Columns
Challenge No. 535: This problem was contributed by Mehmet Çiçek.
Solved using: Python in Excel.
Next Palindrome with Repeats
Challenge No. 534: Find the next 3 Palindrome numbers for the given numbers where any digit is repeated by the numbers given in Repeats column.
Solved using: Python in Excel.
Sum-Based Neighboring Grid Fill
Challenge No. 532: Apologies!! Scheduling didn’t work today.
Solved using: Python in Excel.
Remove Digit to Make Divisible
Challenge No. 531: List first 500 numbers starting with 101 which don’t end with 0 and are divisible at least once by removing one digit at a time from the number.
Solved using: R.
Signed Number String Sum
Challenge No. 529: Extract the numbers and sum them along with their signs.
Solved using: Python in Excel.
Draw Alphabetic Diamond
Challenge No. 528: Generate the diamond of alphabets as per the numbers given in column A.
Solved using: Python.