Question bank
4,310 interview questions, answered.
Reference answers, what the interviewer is really testing, how it is graded, and the follow-ups that come next.
Easy 190Medium 2,498Hard 982
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DoorDash4,310 questions
- 433Number of Ways to Build Sturdy Brick WallCoding·
Amazon - 434Offline evaluations improved but production metrics fell. What happened?HardAI MLTechnical· 30 min
- 435Paint FenceCoding· Amazon, Walmart
- 436Paint HouseCoding·
Uber - 437Paint House IICoding·
Expedia, Media.net - 438Palindrome CheckCoding·
Adobe - 439Palindrome RemovalCoding·
Microsoft - 440Partition equal subset sumMediumCoding·
Google - 441Permutation SequenceCoding·
InfoEdge India Ltd - 442Permutations of a StringCoding· Expedia, PhonePe
- 443Pour WaterCoding·
Goldman Sachs - 444Pour Water Between Buckets to Make Water Levels EqualCoding·
Flexport - 445Pow(x,n)Coding· Goldman Sachs, Zoho
- 446Print all nodes at a distance of K in BTCoding· Amazon, Uber
- 447Reachable Nodes Before DestructionCoding· Microsoft
- 448Read N Characters Given Read4Coding·
Apple - 449Rearrange array elements by signMediumCoding· Expedia
- 450Remove duplicates from sorted arrayCoding·
Ninjacart, Twilio - 451Remove Nth node from the back of the LLCoding·
Intuit - 452Reverse an arrayCoding·
EY - 453Reverse LL in group of given size KCoding· Amazon, MakeMyTrip
- 454Reverse PairsHardCoding·
Meta - 455Reverse Words in a String IICoding·
PayPal - 456Rod cutting problemCoding· Microsoft