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Math Interview Questions

49 Math problems asked across FAANG and top tech companies. Approach hints, optimal solutions, and related problems.

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Math 49
MathClear all
2.Add Two Numbers
Linked ListMathRecursion
Medium+3▶ Mock
70.Climbing Stairs
Dynamic ProgrammingMath
Easy+4▶ Mock
7.Reverse Integer
Math
Medium▶ Mock
13.Roman to Integer
Hash TableMathString
Easy+1▶ Mock
189.Rotate Array
ArrayMathTwo Pointers
Medium+1▶ Mock
12.Integer to Roman
Hash TableMathString
Medium▶ Mock
380.Insert Delete GetRandom O(1)
ArrayHash TableMath
Medium▶ Mock
9.Palindrome Number
Math
Easy▶ Mock
50.Pow(x, n)
MathRecursion
Medium▶ Mock
67.Add Binary
MathStringBit Manipulation
Easy▶ Mock
2939.Maximum XOR Product
MathGreedyBit Manipulation
Medium▶ Mock
48.Rotate Image
ArrayMathMatrix
Medium▶ Mock
1802.Maximum Value at a Given Index in a Bounded Array
MathBinary SearchGreedy
Medium▶ Mock
1344.Angle Between Hands of a Clock
Math
Medium▶ Mock
227.Basic Calculator II
MathStringStack
Medium▶ Mock
1739.Building Boxes
MathBinary SearchGreedy
Hard▶ Mock
829.Consecutive Numbers Sum
MathEnumeration
Hard▶ Mock
3875.Construct Uniform Parity Array I
ArrayMath
Easy▶ Mock
2954.Count the Number of Infection Sequences
ArrayMathCombinatorics
Hard▶ Mock
509.Fibonacci Number
MathDynamic ProgrammingRecursion
Easy▶ Mock
564.Find the Closest Palindrome
MathString
Hard▶ Mock
670.Maximum Swap
MathGreedy
Medium▶ Mock
628.Maximum Product of Three Numbers
ArrayMathSorting
Easy▶ Mock
66.Plus One
ArrayMath
Easy▶ Mock
2366.Minimum Replacements to Sort the Array
ArrayMathGreedy
Hard▶ Mock
3953.Maximum Score with Co-Prime Element
ArrayHash TableMath
Hard▶ Mock
3649.Number of Perfect Pairs
ArrayMathTwo Pointers
Medium▶ Mock
69.Sqrt(x)
MathBinary SearchNewton's Method
Easy▶ Mock
3345.Smallest Divisible Digit Product I
MathEnumeration
Easy▶ Mock
384.Shuffle an Array
ArrayMathDesign
Medium▶ Mock
Missing Number
ArrayHash TableMath
Easy▶ Mock
Happy Number
Hash TableMathTwo Pointers
Easy+1▶ Mock
43.Multiply Strings
MathStringSimulation
Medium▶ Mock
149.Max Points on a Line
ArrayHash TableMath
Hard▶ Mock
166.Fraction to Recurring Decimal
Hash TableMathString
Medium▶ Mock
282.Expression Add Operators
MathStringBacktracking
Hard▶ Mock
319.Bulb Switcher
MathBrainteaser
Medium▶ Mock
381.Insert Delete GetRandom O(1) - Duplicates allowed
ArrayHash TableMath
Hard▶ Mock
445.Add Two Numbers II
Linked ListMathStack
Medium▶ Mock
528.Random Pick with Weight
ArrayMathBinary Search
Medium▶ Mock
779.K-th Symbol in Grammar
MathBit ManipulationRecursion
Medium▶ Mock
973.K Closest Points to Origin
ArrayMathDivide and Conquer
Medium▶ Mock
1248.Count Number of Nice Subarrays
ArrayHash TableMath
Medium▶ Mock
1352.Product of the Last K Numbers
ArrayMathDesign
Medium▶ Mock
1610.Maximum Number of Visible Points
ArrayMathGeometry
Hard▶ Mock
1648.Sell Diminishing-Valued Colored Balls
ArrayMathBinary Search
Medium▶ Mock
1823.Find the Winner of the Circular Game
ArrayMathRecursion
Medium▶ Mock
1828.Queries on Number of Points Inside a Circle
ArrayMathGeometry
Medium▶ Mock
2101.Detonate the Maximum Bombs
ArrayMathDepth-First Search
Medium▶ Mock

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