"In this project" or "At this project" or "On this project".

I have a question about which of the sentences is correct, maybe none of them is correct. For example I am trying to speak about a project I have worked, and so I say

"(In,At,On) this project i dealt with an algorithm which ..." or

"(In,At,On) this project i implement a code to calculate ..."

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  • 1
    Please add a complete sentence of where you wish to use these phrases. That will help other SEians to come up with a definite answer. – BlackSwan Jul 6 '17 at 9:26
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    Possible duplicate of "on a project" vs "in a project" – SteveES Jul 6 '17 at 9:47

You should say "In this project, I implemented a code to calculate ..."/"In this project, I worked on implementing a code to calculate ...". You work on something in a project.

Alternatively you can say, "While working on this project, I implemented a code to calculate ...".

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