Coding Tasks

You are presented with five independent coding tasks. Implement a function for each task as described below.

Task 1: Add Drama to Text

• Input: A string s.
• A group is defined as a maximal contiguous sequence of non-whitespace characters.
• Output: A new string where:
  • Every period '.' is replaced with an exclamation mark '!'.
  • One additional exclamation mark '!' is appended after each group.
• Constraint: Preserve the original whitespace between groups.
• Example: "hi. there" becomes "hi!! there!".

Task 2: Filter and Reverse Even Numbers

• Input: A list of integers nums.
• Process: Remove all odd numbers from the list.
• Output: The remaining even numbers in reverse order relative to their original appearance.
• Example: [1, 2, 3, 4, 6, 5] returns [6, 4, 2].

Task 3: Compute a Bounding Rectangle

• Input: A non-empty list of coordinates, where each coordinate is a two-element list [x, y].
• Output: A four-element list [minX, minY, width, height], where:
  • minX is the minimum x-coordinate found.
  • minY is the minimum y-coordinate found.
  • width is calculated as maxX - minX.
  • height is calculated as maxY - minY.

Task 4: Find Incorrect Digit Positions in a Sum

• Input: Three non-negative integers: num1, num2, and statedSum.
• Process:
  • Compute the correct sum: correctSum = num1 + num2.
  • Compare statedSum against correctSum digit by digit, starting from the rightmost digit (ones place) and moving left.
• Output: A list of zero-based digit indexes where the digits differ. The ones digit has index 0, the tens digit has index 1, and so on.
• Constraint: If the numbers have different lengths, treat missing higher-order digits as 0 during comparison until all digits of both numbers have been consumed.
• Example: If num1 = 99, num2 = 1, and statedSum = 190, the correct sum is 100. The result is [1] because only the tens digit differs.

Task 5: Extract Disallowed URLs for Bot User Agents

• Input: lines, a list of strings representing the content of a text file, with one line per string.
• File Format: The file is similar to a robots.txt file and contains sections. A new section begins when a line starts with the exact prefix "User-agent:".
• Relevant Section: A section is considered relevant if its user-agent value (after trimming surrounding spaces) either:
  • Is exactly "*", OR
  • Ends with the exact suffix "Bot".
• Extraction: Within every relevant section, collect the URL value found after each line that starts with the exact prefix "Disallow:".
• Section Termination: Stop considering a section when the next "User-agent:" line is encountered or the end of the file is reached.
• Output: All collected URLs, with duplicates removed. The matching is case-sensitive (e.g., "/A" and "/a" are distinct URLs). Preserve the order of first occurrence.