CodeFights Solves It: goodStringsCount

programming jobs technical interview problem solution

Our Interview Practice challenge this week is goodStringsCount, a combinatorics problem. As the name suggests, combinatorics deals with combinations of objects that belong to finite sets, and it’s one of those topics that come up a lot in technical interviews. This specific coding problem is from Apple, which makes sense since they’re known for asking combinatorics questions in their technical interviews! If this isn’t your first CodeFights Solves It rodeo, I bet you know what I’m going to ask next:

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