Solutions for leetcode programming challenges https://leetcode.com/problemset/top-interview-questions/
Each file contains single challenge and single or sometimes multiple solutions.
Each file defines main() entry that contains some test code.
You can't however, run the main() app entrypoint outide of the main package.
So the easiest way to run the solution would be to rename the package at the top of the file to main and execute:
go run <filename.go>
In the future I may improve it by adding filename_test.go files for each of the challenge file with one test function that will execute tests. Then it will be easy to test challenges by running go test command.
But this future may never come...