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.
⭐️⭐️ Easy
Slightly challenging problems for learners.
Count Inversions in Number Sequence
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.
Distance Matrix Between Cities
Challenge No. 160: x, y coordinates are given for different cities.
Solved using: Python 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.
Assign Teachers to Students
Challenge No. 156: Last Sunday’s challenge was deemed to be super-difficult.
Solved using: Python.
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.
Render Provided Grid Design
Challenge No. 385: Generate the given grid.
Solved using: R.
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.
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.