Encode and Decode Strings
Encode a list of strings into a single string and decode it back.
Input: strs = ["","hello",""]
Output: ["","hello",""]
Explanation: Prepends chunk lengths and a delimiter (e.g., "0#5#hello0#") to safely encode and perfectly restore empty strings.

Question

Encode a list of strings into a single string and decode it back.

Input: strs = ["","hello",""]

Output: ["","hello",""]

Explanation: Prepends chunk lengths and a delimiter (e.g., "0#5#hello0#") to safely encode and perfectly restore empty strings.