Number Theory

80 LeetCode questions

Difficulty Distribution

Easy
10
13%
Medium
36
45%
Hard
34
43%

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Questions

TitleDifficulty
Smallest Divisible Digit Product IIHard
Count PrimesMedium
Add DigitsEasy
Check If Digits Are Equal in String After Operations IIHard
Number of Different Subsequences GCDsHard
Minimum Jumps to Reach End via Prime TeleportationMedium
The kth Factor of nMedium
Fancy SequenceHard
Smallest Even MultipleEasy
Minimum Deletions to Make Array DivisibleHard
Find Triangular Sum of an ArrayMedium
Minimum Number of Primes to Sum to TargetMedium
Most Expensive Item That Can Not Be BoughtMedium
Check If Digits Are Equal in String After Operations IEasy
GCD Sort of an ArrayHard
Count Beautiful Substrings IMedium
Prime PalindromeMedium
Closest Prime Numbers in RangeMedium
Mirror ReflectionMedium
Replace Non-Coprime Numbers in ArrayHard
Number of Pairs of Interchangeable RectanglesMedium
Count the Number of Ideal ArraysHard
Minimum Number of Operations to Make All Array Elements Equal to 1Medium
Count Beautiful Substrings IIHard
Count Ways to Make Array With ProductHard
Minimum Division Operations to Make Array Non DecreasingMedium
Prime Subtraction OperationMedium
Number of Common FactorsEasy
Find the Largest Palindrome Divisible by KHard
Balanced K-Factor DecompositionMedium
Ugly Number IIIMedium
Sum of Perfect Square AncestorsHard
Minimum Stability Factor of ArrayHard
Minimize Array Sum Using Divisible ReplacementsMedium
Sum of GCD of Formed PairsMedium
Minimize the Maximum of Two ArraysMedium
Find Greatest Common Divisor of ArrayEasy
Number of Subarrays With LCM Equal to KMedium
Maximum Score with Co-Prime ElementHard
Abbreviating the Product of a RangeHard
Three DivisorsEasy
Insert Greatest Common Divisors in Linked ListMedium
GCD of Odd and Even SumsEasy
Minimize Length of Array Using OperationsMedium
Check If It Is a Good ArrayHard
Count Valid Paths in a TreeHard
Minimum Operations to Transform Array into Alternating PrimeMedium
X of a Kind in a Deck of CardsEasy
Count Sequences to KHard
Maximize Subarray GCD ScoreHard
Count the Number of Square-Free SubsetsMedium
Largest Component Size by Common FactorHard
Apply Operations to Maximize ScoreHard
Maximum Subarray With Equal ProductsEasy
Simplified FractionsMedium
Most Frequent PrimeMedium
Minimum Lines to Represent a Line ChartMedium
Tree of CoprimesHard
Sorted GCD Pair QueriesHard
Count Prime-Gap Balanced SubarraysMedium
Sum of Beautiful SubsequencesHard
Distinct Prime Factors of Product of ArrayMedium
Largest Prime from Consecutive Prime SumMedium
Prime In DiagonalEasy
Find the Number of Subsequences With Equal GCDHard
Maximize Count of Distinct Primes After SplitHard
Digit Operations to Make Two Integers EqualMedium
Find the Maximum Factor Score of ArrayMedium
The Number of Good SubsetsHard
Make K-Subarray Sums EqualMedium
Sum of Largest Prime SubstringsMedium
Count Array Pairs Divisible by KHard
Check if Point Is ReachableHard
Maximum Element-Sum of a Complete Subset of IndicesHard
Number of Self-Divisible PermutationsMedium
Maximize Score After N OperationsHard
Maximum GCD-Sum of a SubarrayHard
Graph Connectivity With ThresholdHard
Maximum Prime DifferenceMedium
Split the Array to Make Coprime ProductsHard

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