Find the Maximum Factor Score of Array
A medium-tier problem at 40% community acceptance, tagged with Array, Math, Number Theory. Reported in interviews at Info Edge and 0 others.
Find the Maximum Factor Score of Array is a medium-difficulty problem that Info Edge has reportedly asked. It sits at a 40% acceptance rate, which means most candidates don't nail it on first attempt. The trick isn't greedy or dynamic programming. It's about recognizing what "factor score" actually means and then structuring your search efficiently. This is the kind of problem where the obvious brute-force path eats your time, and you need the right Number Theory insight to cut it down. If this hits your live assessment and you blank on the pattern, StealthCoder solves it in seconds, invisible to the proctor.
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Find the Maximum Factor Score of Array is the kind of problem that decides whether you pass. StealthCoder reads the problem on screen and surfaces a working solution in under 2 seconds. Invisible to screen share. The proctor sees nothing. Built by a senior engineer who knows the OA is theater. This is the script.
Get StealthCoderThe core insight is that you're not optimizing array values directly. You're finding a divisor (or set of divisors) that maximizes a score based on how many array elements it divides. Most candidates waste time trying all subsets or all possible scores. The real move is to iterate through potential divisors smartly, count which elements each divisor divides, and track the maximum. Number Theory handles this efficiently: you don't need to test every number up to the array max. You can generate divisors from the array elements themselves or bound your search using GCD properties. Common pitfall: confusing the scoring function or thinking you need to modify the array. You don't. StealthCoder is your safety net if the problem wording trips you up or you can't remember the divisor generation pattern during the live OA.
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Find the Maximum Factor Score of Array recycles across companies for a reason. It's medium-tier, and most candidates blank under the timer. StealthCoder is the hedge: an AI overlay invisible during screen share. It reads the problem and surfaces a working solution in under 2 seconds. Built by a senior engineer who knows the OA is theater. This is the script. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Find the Maximum Factor Score of Array interview FAQ
Is this problem actually about GCD or LCM?+
Not exactly. It's about divisors and counting. You're finding which divisor divides the most elements or maximizes a specific scoring formula. GCD and LCM are tools, not the answer. Number Theory underpins the efficiency, but the problem is fundamentally a counting and optimization task.
Why is the acceptance rate so low at 40%?+
Candidates usually miss the efficient divisor generation step and end up with brute-force solutions that time out. The problem statement can also be ambiguous if you skim it. Reading carefully and recognizing the Number Theory angle early saves minutes of struggle.
Should I iterate through all numbers up to max(array)?+
No. That's the trap. You can generate divisors from the array elements themselves using factorization or GCD tricks, or use the fact that useful divisors are factors of at least one element. This keeps your search space small and your solution fast.
How does this relate to the Math and Array topics?+
Math covers the divisor and Number Theory logic. Array means you're iterating and counting. The problem isn't a data structure challenge. It's about recognizing the mathematical constraint and then applying it across the array efficiently.
Is this problem still asked by Info Edge?+
Info Edge has reportedly asked it. Medium-difficulty problems with a 40% acceptance rate tend to stay in rotation because they separate strong candidates from the rest. Expect it to appear in their online assessments.
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