lots of exercises in java... from https://github.com/exercism/java

Katrina Owen e7f5c3677d Inline the exercise README insert (#1290) * Regenerate exercise READMEs to pick up tweaks to problem description The upstream problem specifications have been updated with various formatting changes, whitespace changes, and clarifications to the description. This pulls in all the recent changes. * Inline the exercise README insert Now that we're operating with a track-wide template for generating exercise READMEs we no longer need a separate markdown document to use for hints and instructions that apply to all the exercises in a track. These instructions can be defined directly in the template.		vor 8 Jahren
..
.meta	Delete unnecessary template override	vor 8 Jahren
src	forth: update tests suite to 1.4.0	vor 8 Jahren
README.md	Inline the exercise README insert (#1290)	vor 8 Jahren
build.gradle	forth: add to track	vor 9 Jahren

Forth

Implement an evaluator for a very simple subset of Forth.

Forth is a stack-based programming language. Implement a very basic evaluator for a small subset of Forth.

Your evaluator has to support the following words:

+, -, *, / (integer arithmetic)
DUP, DROP, SWAP, OVER (stack manipulation)

Your evaluator also has to support defining new words using the customary syntax: : word-name definition ;.

To keep things simple the only data type you need to support is signed integers of at least 16 bits size.

You should use the following rules for the syntax: a number is a sequence of one or more (ASCII) digits, a word is a sequence of one or more letters, digits, symbols or punctuation that is not a number. (Forth probably uses slightly different rules, but this is close enough.)

Words are case-insensitive.

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

README.md

Forth

Submitting Incomplete Solutions