Print All Subsequences of a String

In this video, we’ll explore how to print all possible subsequences of a given string using recursion. A subsequence of a string is any sequence that can be derived by removing some characters without changing the order of the remaining characters.

The function works by:

• Choosing each character in the string, and

• Exploring one of two choices for that character:

  • Include it in the current subsequence, or

  • Exclude it from the current subsequence