Multiply Strings
Multiply two non-negative integers represented as strings Return the product as a string Do not convert the strings to integers directly Example: "2" * "3" = "6" Example: "123" * "456" = "56088"
Multiply Strings is a great reminder that off-by-one errors love strings. Interviewers love it because it reveals your rule-based parsing and your edge-case discipline. The trap is hidden edge cases—empty input, repeated characters, and boundary indexing.
Meet Coco
Coco is an AI study partner, not a person. She listens while you explain your code, asks what a line does and never hands you the fix. Sign in free to type with Coco, up to a daily limit, and to talk with her for one hour. After that, talking comes with the $79 pack. Anyone can open the editor and run their code.