Explain the concept of capturing groups and backreferences in regular expressions.

In regular expressions, capturing groups and backreferences are powerful features that allow you to extract and manipulate specific parts of a matched pattern. They provide a way to isolate and reuse portions of a regular expression. Let's delve into an in-depth explanation of capturing groups and backreferences in regular expressions: 1. Capturing Groups: * Capturing groups are created by enclosing a part of a regular expression pattern within parentheses (). * They allow you to group multiple characters or subpatterns together and treat them as a single unit. * Capturing groups serve two main purposes: + Grouping: By grouping parts of a pattern, you can apply quantifiers or modifiers to the entire group instead of individual characters. + Capturing: Capturing groups also capture the matched substrings ....