Questions

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Arrays and stringsFoundationsOpen topic
Count palindromic substringsMediumWrite codeAmazon styleWrite codeAmazon styleMedium20 minLongest palindromic substringMediumWrite codeAmazon styleWrite codeAmazon styleMedium30 minCount shift groupsMediumWrite codeMeta styleWrite codeMeta styleMedium25 minLongest border lengthMediumWrite codeWrite codeMedium20 minPermutation substringMediumWrite codeWrite codeMedium25 minCount primes below nMediumWrite codeWrite codeMedium18 minSum of Hamming distancesMediumWrite codeWrite codeMedium20 minNth prime numberMediumWrite codeWrite codeMedium25 minAnti-diagonal sumsMediumWrite codeWrite codeMedium20 minSpiral matrix generationMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium25 minAsteroid collisionMediumWrite codeBloomberg styleWrite codeBloomberg styleMedium25 minMatrix block sumMediumWrite codeWrite codeMedium25 min
Boolean expression evaluationMediumWrite codeWrite codeMedium30 minLongest substring with k distinctMediumWrite codeMeta styleWrite codeMeta styleMedium28 minMaximum vowels in windowMediumWrite codeWrite codeMedium18 minCount triplets less than targetMediumWrite codeWrite codeMedium26 minMin stackMediumWrite codeBloomberg styleWrite codeBloomberg styleMedium20 minLinked list cycle startMediumWrite codeAmazon styleWrite codeAmazon styleMedium25 minLongest prefix match in textMediumWrite codeWrite codeMedium25 minSubstrings with k distinct charactersMediumWrite codeMeta styleWrite codeMeta styleMedium25 minMultiply stringsMediumWrite codeMeta styleWrite codeMeta styleMedium25 minCount pattern occurrencesMediumWrite codeWrite codeMedium20 minShortest unique substringMediumWrite codeWrite codeMedium25 minJosephus problemMediumWrite codeWrite codeMedium25 minFind the two records that appear only onceMediumWrite codeWrite codeMedium20 minCount primesMediumWrite codeWrite codeMedium20 minEuler totientMediumWrite codeWrite codeMedium25 minBase conversionMediumWrite codeWrite codeMedium20 minSubmatrix sum countMediumWrite codeGoogle styleWrite codeGoogle styleMedium25 minGame of life stepMediumWrite codeGoogle styleWrite codeGoogle styleMedium25 minRobot bounded circleMediumWrite codeAmazon styleWrite codeAmazon styleMedium20 minRotate matrix counter-clockwiseMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium20 minExpression lexerMediumWrite codeDatabricks styleWrite codeDatabricks styleMedium30 minEnglish word tokenizerMediumWrite codeOpenAI styleWrite codeOpenAI styleMedium25 minSubarray sum divisible by kMediumWrite codeWrite codeMedium20 minSubarrays with product limitMediumWrite codeWrite codeMedium22 minPairs with difference kMediumWrite codeWrite codeMedium18 minMin-max stackMediumWrite codeBloomberg styleWrite codeBloomberg styleMedium25 minRequest rate counterMediumWrite codeStripe styleWrite codeStripe styleMedium20 minFirst negative in windowMediumWrite codeWrite codeMedium20 minStack from queuesMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium20 minStock spanMediumWrite codeBloomberg styleWrite codeBloomberg styleMedium20 minPattern occurrencesMediumWrite codeWrite codeMedium25 minZ-algorithm sumMediumWrite codeWrite codeMedium25 minRange bitwise ANDMediumWrite codeWrite codeMedium20 minRotate matrix 90 degreesMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium20 minSpiral matrix traversalMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium18 minSet matrix zeros in placeMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium25 minDiagonal matrix traversalMediumWrite codeAmazon styleWrite codeAmazon styleMedium22 minArithmetic expression tokenizerMediumWrite codeStripe styleWrite codeStripe styleMedium30 min