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01Hello, Cargo 02Variables and mutability 03Scalar types 04Tuples and arrays 05Functions 06Control flow 07Guessing game 08Ownership 09Borrowing and references 10Slices 11Structs 12Enums and pattern matching 13Option and Result 14The question mark and custom errors 15Dungeon crawler 16Modules and crates 17Vec and String 18HashMap 19Todo list 20Generics 21Traits 22Trait objects 23Lifetimes 24Mini grep 25Closures 26Iterators 27Calculator 28Box and Rc 29RefCell and Arc 30Threads and channels 31Job pool 32Async basics 33Macros 34Testing 35Unsafe and FFI

Rust: Zero to Hero · Stage 18 of 35

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HashMap

Count words and pick the one that appears most often.

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Install Go or Rust, then run buildcraft submit in the starter project. The tests run on your machine and the result shows up here.

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