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Alto LeetCode Interview Questions

Practice 33 real coding problems frequently asked in Alto technical interviews. Master these questions to ace your next Alto software engineering interview.

8 Easy
20 Medium
5 Hard

Top Topics at Alto

ArrayMathStringSortingSimulation

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Alto Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Range Sum of BST
100%
EasyE
100%
TreeDepth-First Search+2
Solve→
Valid Word Abbreviation
93%
EasyE
93%
Two PointersString
Solve→
Squares of a Sorted Array
88%
EasyE
88%
ArrayTwo Pointers+1
Solve→
Adding Spaces to a String
80%
MediumM
80%
ArrayTwo Pointers+2
Solve→
Recyclable and Low Fat Products
74%
EasyE
74%
Database
Solve→
Expression Add Operators
72%
HardH
72%
MathString+1
Solve→
Remove Stones to Minimize the Total
66%
MediumM
66%
ArrayGreedy+1
Solve→
Alien Dictionary
66%
HardH
66%
ArrayString+4
Solve→
Analyze User Website Visit Pattern
63%
MediumM
63%
ArrayHash Table+1
Solve→
Random Pick with Weight
60%
MediumM
60%
ArrayMath+3
Solve→
Valid Sudoku
60%
MediumM
60%
ArrayHash Table+1
Solve→
Koko Eating Bananas
54%
MediumM
54%
ArrayBinary Search
Solve→
Plus One
54%
EasyE
54%
ArrayMath
Solve→
Add Two Numbers
50%
MediumM
50%
Linked ListMath+1
Solve→
Final Array State After K Multiplication Operations I
47%
EasyE
47%
ArrayMath+2
Solve→
Maximum Swap
46%
MediumM
46%
MathGreedy
Solve→
Rank Transform of a Matrix
43%
HardH
43%
ArrayUnion Find+4
Solve→
Reveal Cards In Increasing Order
41%
MediumM
41%
ArrayQueue+2
Solve→
Take Gifts From the Richest Pile
41%
EasyE
41%
ArrayHeap (Priority Queue)+1
Solve→
Two Sum II - Input Array Is Sorted
39%
MediumM
39%
ArrayTwo Pointers+1
Solve→
House Robber II
39%
MediumM
39%
ArrayDynamic Programming
Solve→
Binary Tree Maximum Path Sum
37%
HardH
37%
Dynamic ProgrammingTree+2
Solve→
Course Schedule
35%
MediumM
35%
Depth-First SearchBreadth-First Search+2
Solve→
Insert Delete GetRandom O(1)
32%
MediumM
32%
ArrayHash Table+3
Solve→
Remove All Occurrences of a Substring
31%
MediumM
31%
StringStack+1
Solve→

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Best Time to Buy and Sell Stock
31%
EasyE
31%
ArrayDynamic Programming
Solve→
Maximum Matrix Sum
28%
MediumM
28%
ArrayGreedy+1
Solve→
Remove All Adjacent Duplicates in String II
27%
MediumM
27%
StringStack
Solve→
Random Pick Index
25%
MediumM
25%
Hash TableMath+2
Solve→
Number of Ships in a Rectangle
24%
HardH
24%
ArrayDivide and Conquer+1
Solve→
Jump Game
23%
MediumM
23%
ArrayDynamic Programming+1
Solve→
Buildings With an Ocean View
22%
MediumM
22%
ArrayStack+1
Solve→
Kth Largest Element in an Array
22%
MediumM
22%
ArrayDivide and Conquer+3
Solve→

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Frequently Asked Questions

What LeetCode problems does Alto ask in interviews?

Alto commonly asks 33 coding problems in technical interviews, including Range Sum of BST, Valid Word Abbreviation, Squares of a Sorted Array. The difficulty breakdown is 8 Easy, 20 Medium, and 5 Hard problems.

How should I prepare for a Alto coding interview?

Focus on the most frequently asked problems first, especially those with high frequency scores. Alto interviews typically emphasize Array and Math. Practice explaining your thought process while coding.

What is the difficulty level of Alto coding interviews?

Based on our data, Alto interviews include 8 Easy (24%), 20 Medium (61%), and 5 Hard (15%) problems.

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