Challenge No. 417: Split the given strings whenever a changeover happens between English alphabets and numbers.
Solved using: Excel VBA.
MAP
Applies a function to each element of one or more arrays in Excel.
Validate IMO Check Digit
Challenge No. 414: IMO Number of a Vessel – This is a 7 digit number where last digit is check digit.
Solved using: Python in Excel.
Roman Palindromic Numbers
Challenge No. 410: List all decimal numbers whose Roman equivalents are Palindromic.
Solved using: Python.
Reverse, Cipher and Shift Text
Challenge No. 407: Mirror Cipher with Caesar’s Shift – Reverse the words and then reverse the alphabets within the words.
Solved using: Python.
List Prime-Surrounded Sandwich Numbers
Challenge No. 405: Sandwich numbers – A number is said to be a Sandwich number if the number prior to it and the number after it, both are primes.
Solved using: Excel VBA.
Encrypt Using Vigenere Cipher
Challenge No. 402: Vignere Cipher – Write the plain text (p) and keyword (k) beneath that.
Solved using: Python in Excel.
Validate Vehicle Registration Numbers
Challenge No. 163: Extract the valid vehicle registration numbers from given data table T2.
Solved using: R.
Extract Alphabet Number Pairs
Challenge No. 162: Extract alphabet and two digit numbers strings if alphabet and two digit numbers are separated by a special character.
Solved using: R.
Count Unique Letters in String
Challenge No. 399: Extract the unique alphabets from the given strings and count their frequencies of occurrence.
Solved using: Python.
Encrypt Words with Tri Numeral Cipher
Challenge No. 397: Tri Numeral Alphabet Cipher – English alphabets are divided into groups containing 3 alphabets each and last group contain only 2 alphabets i.
Solved using: Python in Excel.