Real code. Real tests.

Validate a Solana wallet address

Every Solana account is identified by a 32-byte public key, shown as a base58 string. Write a function that rejects anything that can't be a valid key — before it ever reaches an RPC call.

Objectives

• • Understand the base58 alphabet
• • Enforce the 32–44 character length
• • Handle empty and malformed input