Programming Praxis

I goofed.

While writing a program (it may appear in a future exercise) I needed to search a sorted array for a target value. I should have copied an existing binary search, but instead I wrote my own, since I’m a good programmer and can certainly write a simple function like that. You won’t have any trouble guessing what happened next.

Your task is to write a binary search function; do it yourself, without looking at any library implementations or searching the internet. You might also want to write a test script to give you confidence in your function. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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