Number Theory

69 LeetCode questions

Difficulty Distribution

Easy
10
14%
Medium
29
42%
Hard
30
43%

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Questions

TitleDifficulty
Count PrimesMedium
Smallest Divisible Digit Product IIHard
Add DigitsEasy
Check If Digits Are Equal in String After Operations IIHard
Number of Different Subsequences GCDsHard
The kth Factor of nMedium
Count Ways to Make Array With ProductHard
GCD Sort of an ArrayHard
Replace Non-Coprime Numbers in ArrayHard
Find Triangular Sum of an ArrayMedium
Smallest Even MultipleEasy
Count Beautiful Substrings IIHard
Count Beautiful Substrings IMedium
Insert Greatest Common Divisors in Linked ListMedium
Prime PalindromeMedium
Minimum Division Operations to Make Array Non DecreasingMedium
Prime Subtraction OperationMedium
Check If Digits Are Equal in String After Operations IEasy
Closest Prime Numbers in RangeMedium
Count the Number of Ideal ArraysHard
Number of Common FactorsEasy
Mirror ReflectionMedium
Number of Pairs of Interchangeable RectanglesMedium
X of a Kind in a Deck of CardsEasy
Minimum Stability Factor of ArrayHard
Balanced K-Factor DecompositionMedium
Find the Largest Palindrome Divisible by KHard
Ugly Number IIIMedium
Sum of Perfect Square AncestorsHard
Minimum Number of Operations to Make All Array Elements Equal to 1Medium
Minimize the Maximum of Two ArraysMedium
Find Greatest Common Divisor of ArrayEasy
Abbreviating the Product of a RangeHard
Check If It Is a Good ArrayHard
GCD of Odd and Even SumsEasy
Minimize Length of Array Using OperationsMedium
Count Valid Paths in a TreeHard
Largest Component Size by Common FactorHard
Simplified FractionsMedium
Tree of CoprimesHard
Minimum Lines to Represent a Line ChartMedium
Most Frequent PrimeMedium
Distinct Prime Factors of Product of ArrayMedium
Sorted GCD Pair QueriesHard
Apply Operations to Maximize ScoreHard
Three DivisorsEasy
Prime In DiagonalEasy
Maximize Subarray GCD ScoreHard
Count Prime-Gap Balanced SubarraysMedium
Sum of Beautiful SubsequencesHard
Maximum Subarray With Equal ProductsEasy
Largest Prime from Consecutive Prime SumMedium
Number of Subarrays With LCM Equal to KMedium
Find the Maximum Factor Score of ArrayMedium
Find the Number of Subsequences With Equal GCDHard
Minimum Deletions to Make Array DivisibleHard
The Number of Good SubsetsHard
Maximize Number of Nice DivisorsHard
Digit Operations to Make Two Integers EqualMedium
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
Maximize Score After N OperationsHard
Graph Connectivity With ThresholdHard
Minimum Jumps to Reach End via Prime TeleportationMedium
Maximum Prime DifferenceMedium
Split the Array to Make Coprime ProductsHard

Showing 69 of 69 questions