At todays C++ meetup I was told a programming quiz:

Given the digits 1-9 (in that order), you can combine them with either '+', '-' or nothing.
Now find all of these mathematical terms, that evaluate to 100.

You can use any programming language and library you like and you have 1 hour to complete the task.

At first I came up with a solution in JavaScript.
time spent: 22min
execution time: ~170ms
loc: 21

Expressions that evaluate to 100 Show more


Then I came up with a solution in that took me ~5 minutes to write but with an execution time of 20s.

But #bash can also do it in 46ms Show more

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Generalistic and moderated instance.