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Research Innovations LeetCode Interview Questions

Practice 20 real coding problems frequently asked in Research Innovations technical interviews. Master these questions to ace your next Research Innovations software engineering interview.

1 Easy
14 Medium
5 Hard

Top Topics at Research Innovations

ArrayBreadth-First SearchSortingHash TableTwo Pointers

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Research Innovations Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Course Schedule
100%
MediumM
100%
Depth-First SearchBreadth-First Search+2
Solve→
Friends Of Appropriate Ages
85%
MediumM
85%
ArrayTwo Pointers+2
Solve→
High Five
81%
EasyE
81%
ArrayHash Table+2
Solve→
Insert into a Sorted Circular Linked List
78%
MediumM
78%
Linked List
Solve→
String to Integer (atoi)
74%
MediumM
74%
String
Solve→
Number of Islands
72%
MediumM
72%
ArrayDepth-First Search+3
Solve→
Trapping Rain Water
70%
HardH
70%
ArrayTwo Pointers+3
Solve→
Rank Transform of a Matrix
62%
HardH
62%
ArrayUnion Find+4
Solve→
Next Permutation
62%
MediumM
62%
ArrayTwo Pointers
Solve→
Max Stack
58%
HardH
58%
Linked ListStack+3
Solve→
First Missing Positive
57%
HardH
57%
ArrayHash Table
Solve→
Ways to Make a Fair Array
56%
MediumM
56%
ArrayPrefix Sum
Solve→
Fraction to Recurring Decimal
46%
MediumM
46%
Hash TableMath+1
Solve→
Subsets
42%
MediumM
42%
ArrayBacktracking+1
Solve→
Binary Tree Zigzag Level Order Traversal
41%
MediumM
41%
TreeBreadth-First Search+1
Solve→
K Closest Points to Origin
39%
MediumM
39%
ArrayMath+5
Solve→
Walls and Gates
33%
MediumM
33%
ArrayBreadth-First Search+1
Solve→
House Robber
30%
MediumM
30%
ArrayDynamic Programming
Solve→
Minimum Array Sum
25%
MediumM
25%
ArrayDynamic Programming
Solve→
All O`one Data Structure
24%
HardH
24%
Hash TableLinked List+2
Solve→

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Frequently Asked Questions

What LeetCode problems does Research Innovations ask in interviews?

Research Innovations commonly asks 20 coding problems in technical interviews, including Course Schedule, Friends Of Appropriate Ages, High Five. The difficulty breakdown is 1 Easy, 14 Medium, and 5 Hard problems.

How should I prepare for a Research Innovations coding interview?

Focus on the most frequently asked problems first, especially those with high frequency scores. Research Innovations interviews typically emphasize Array and Breadth-First Search. Practice explaining your thought process while coding.

What is the difficulty level of Research Innovations coding interviews?

Based on our data, Research Innovations interviews include 1 Easy (5%), 14 Medium (70%), and 5 Hard (25%) problems.

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