The provided code snippet is in Ruby, and it uses...

The provided code snippet is in Ruby, and it uses the gsub method to perform a substitution within a string. Here's what it does:

1. gsub: The method is used for global substitution, which means it will replace all occurrences in the string that match the given pattern.

2. Regular Expression (/Time\:1[0-9]+ /):

   • Time:: Matches the literal string "Time:".
   • 1[0-9]+:
     • Matches the digit 1, followed by one or more digits between 0 and 9. For example, it could match numbers like 10, 11, 19, etc.
   • A space ( ): Matches a single space.
   • Altogether, this pattern matches strings like "Time:10 ", "Time:15 ", or "Time:19 ", but not "Time:20 " or "Time:09 ".

3. Replacement ("Time:XX "):

   • For every match found, it is replaced with the string "Time:XX ".

What the Code Does

The code replaces any occurrence of the string that starts with "Time:", contains the digit 1 followed by other digits (such as 10, 11, 19, etc.), and ends with a space, with the string "Time:XX " in the given input string.

Example Input and Output

• Input: "The event starts at Time:11 and ends at Time:15."
• Output: "The event starts at Time:XX and ends at Time:XX."