Challenge No. 396: Let’s say i and j are positions and e(i) and e(j) are elements from the string at that position.
Solved using: Python.
MAP
Applies a function to each element of one or more arrays in Excel.
Encrypt with Autokey Cipher
Challenge No. 393: AUTOKEY CIPHER – Key is written beneath Plaintext and if key is shorter than Plaintext, then remaining slots beneath Plaintext are filled by letters from Plaintext starting from beginning.
Solved using: R.
Reorder Letters by Position Type
Challenge No. 392: Reading from backwards, collect all letters occurring at even positions followed by all letters occurring at odd positions.
Solved using: Python in Excel.
Form Shortest Palindromic Prefix
Challenge No. 391: Find the smallest Palindromes (in length) which can be formed by adding English alphabets before string.
Solved using: Python in Excel.
Extract Numbers Inside Parentheses
Challenge No. 386: Extract the numbers from the string if ONLY numbers are contained within the parentheses.
Solved using: Python in Excel.
Extract Signed Numbers from Text
Challenge No. 383: Extract the unique positive and negative numbers if they are immediately preceded by either plus or minus sign.
Solved using: Python.
Generate Kamasutra Cipher Encryption
Challenge No. 382: Kamasutra Cipher – Generate 13 random pairs from English alphabets and use that to encrypt the plain text.
Solved using: Python.
Numbers With Larger Successors
Challenge No. 379: List all the numbers where all succeeding numbers are larger than the number.
Solved using: Python.
Split on First Greater Sum
Challenge No. 378: Split the numbers into two parts where sum of first part is > sum of second part where it happens for the first time.
Solved using: R.
Encrypt Text with Keyword Cipher
Challenge No. 377: Encrypt the gives words using Keyword Cipher.
Solved using: Python.