Challenge No. 447: Penholodigital squares are perfect square numbers that contain digits from 1 to 9 exactly once.
Solved using: R.
SEQUENCE
Generates a sequence of numbers in an array in Excel.
Top 3 Closest City Pairs
Challenge No. 446: The distance between two cities is given in the grid.
Solved using: R.
Generate Look-and-Say Sequence
Challenge No. 444: Look & Say Sequence
Going from Left to Right in a number, take a digit and insert how many times this digit appears to the left of the digit.
Solved using: Python in Excel.
Find Birds in Grid Rows
Challenge No. 443: Given 10×10 grid in A2:K11 contains bird names across rows (not in columns).
Solved using: Python in Excel.
Encrypt Using Columnar Cipher
Challenge No. 442: Columnar Transposition Cipher
Write the keyword in a row
Rank the letters of keyword as per their position in English language in descending order.
Solved using: Python in Excel.
Generate Integers From Ranges
Challenge No. 441: Generate the integers corresponding to intervals.
Solved using: Python.
Allocate Amounts by Quarter Days
Challenge No. 188: Divide the amount across quarters falling in between From and To Date.
Solved using: Python in Excel.
Convert Resistance to Ohms Unit
Challenge No. 438: Now, let’s express the derived values as K, M or G (Kilo, Mega or Giga).
Solved using: Python in Excel.
Encrypt Using Bifid Cipher
Challenge No. 437: Bifid Cipher with Keyword
Suppose we want to encrypt the message “BATTLE” and keyword is “ROTORS”.
Solved using: Python in Excel.
List Prime Pandigital Numbers
Challenge No. 436: An n digit number is Pandigital if it makes use of all the digits 1 to n exactly once.
Solved using: Excel VBA.