CodingFoundations
Arrays and strings
Easynot started
Mediumnot started
Hardnot started
StatusFormatCompany style
Easy
Three-way partition by pivotWrite codeWrite code15 minAdd two large numbers stored as digit listsWrite code · Microsoft styleMicrosoft styleWrite codeMicrosoft style10 minEvaluate a postfix expression from a calculatorWrite code · Bloomberg styleBloomberg styleWrite codeBloomberg style12 minQuery string encodingWrite code · Stripe styleStripe styleWrite codeStripe style15 minCheck whether a stack can produce a pop orderWrite codeWrite code15 minPath prefix routingWrite codeWrite code15 minCheck whether a phrase reads the same backwardsWrite code · Meta styleMeta styleWrite codeMeta style10 minApply a flash sale price cap to a cartWrite codeWrite code10 minZero the stock counts of recalled pallet slotsWrite codeWrite code10 minShow the best price still to comeWrite codeWrite code10 minCarousel rotationWrite codeWrite code12 minFind the first day a shop balance goes negativeWrite codeWrite code10 minMedium
Longest equal zero-one subarrayWrite code · Meta styleMeta styleWrite codeMeta style20 minNext greater circularWrite code · Amazon styleAmazon styleWrite codeAmazon style25 minLongest repeating character substringWrite code · Meta styleMeta styleWrite codeMeta style25 minMaximum width rampWrite codeWrite code25 minLongest k-distinct subarrayWrite code · Meta styleMeta styleWrite codeMeta style25 minStable partition by parityWrite codeWrite code15 minElements over n/3Write codeWrite code30 minValues appearing exactly twiceWrite codeWrite code25 minSubarrays with k oddsWrite codeWrite code25 minAlternate non-negative and negativeWrite codeWrite code25 minLongest ones after flipsWrite codeWrite code20 minCount the days until a warmer dayWrite code · Amazon styleAmazon styleWrite codeAmazon style20 minHard
Reverse nodes in k-groupsWrite code · Microsoft styleMicrosoft styleWrite codeMicrosoft style35 minTransfer locking final balanceWrite code · Stripe styleStripe styleWrite codeStripe style30 minRelational table joinWrite code · Snowflake styleSnowflake styleWrite codeSnowflake style30 minComposite index seekWrite code · Oracle styleOracle styleWrite codeOracle style30 minShortest palindrome by prependingWrite code · Google styleGoogle styleWrite codeGoogle style35 minSingle number appearing onceWrite codeWrite code25 minCount coprime pairsWrite codeWrite code30 minString literal tokenizerWrite code · Stripe styleStripe styleWrite codeStripe style35 minComment stripper with string literalsWrite codeWrite code35 minSubarrays with exactly k distinctWrite code · Meta styleMeta styleWrite codeMeta style32 minMinimum window substringWrite code · Meta styleMeta styleWrite codeMeta style35 minDistinct substrings countWrite code · Citadel styleCitadel styleWrite codeCitadel style35 min