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Roche LeetCode Interview Questions

Practice 30 real coding problems frequently asked in Roche technical interviews. Master these questions to ace your next Roche software engineering interview.

2 Easy
19 Medium
9 Hard

Top Topics at Roche

ArrayHash TableSortingStringBinary Search

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Roche Interview Problems

ProblemDifficultyDiffFrequencyTopicsAction
Zero Array Transformation III
100%
MediumM
100%
ArrayGreedy+3
Solve→
Number of Islands
98%
MediumM
98%
ArrayDepth-First Search+3
Solve→
Binary Tree Right Side View
94%
MediumM
94%
TreeDepth-First Search+2
Solve→
Shortest Palindrome
89%
HardH
89%
StringRolling Hash+2
Solve→
Friends Of Appropriate Ages
86%
MediumM
86%
ArrayTwo Pointers+2
Solve→
Design an Array Statistics Tracker
82%
HardH
82%
Hash TableBinary Search+5
Solve→
Word Break II
81%
HardH
81%
ArrayHash Table+5
Solve→
Lowest Common Ancestor of a Binary Tree III
78%
MediumM
78%
Hash TableTwo Pointers+2
Solve→
Valid Number
76%
HardH
76%
String
Solve→
Reverse Integer
75%
MediumM
75%
Math
Solve→
Find Longest Self-Contained Substring
75%
HardH
75%
Hash TableString+2
Solve→
Subsets II
72%
MediumM
72%
ArrayBacktracking+1
Solve→
Search Suggestions System
70%
MediumM
70%
ArrayString+4
Solve→
Take Gifts From the Richest Pile
69%
EasyE
69%
ArrayHeap (Priority Queue)+1
Solve→
Copy List with Random Pointer
68%
MediumM
68%
Hash TableLinked List
Solve→
Coin Change II
68%
MediumM
68%
ArrayDynamic Programming
Solve→
Container With Most Water
65%
MediumM
65%
ArrayTwo Pointers+1
Solve→
Max Stack
62%
HardH
62%
Linked ListStack+3
Solve→
High Five
61%
EasyE
61%
ArrayHash Table+2
Solve→
Binary Tree Maximum Path Sum
53%
HardH
53%
Dynamic ProgrammingTree+2
Solve→
Two Best Non-Overlapping Events
52%
MediumM
52%
ArrayBinary Search+3
Solve→
Word Ladder II
46%
HardH
46%
Hash TableString+2
Solve→
Random Pick Index
44%
MediumM
44%
Hash TableMath+2
Solve→
Max Consecutive Ones III
40%
MediumM
40%
ArrayBinary Search+2
Solve→
Nested List Weight Sum II
38%
MediumM
38%
StackDepth-First Search+1
Solve→

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Find the Celebrity
25%
MediumM
25%
Two PointersGraph+1
Solve→
Accounts Merge
23%
MediumM
23%
ArrayHash Table+5
Solve→
Koko Eating Bananas
23%
MediumM
23%
ArrayBinary Search
Solve→
Number of Ships in a Rectangle
21%
HardH
21%
ArrayDivide and Conquer+1
Solve→
Sort Integers by The Power Value
20%
MediumM
20%
Dynamic ProgrammingMemoization+1
Solve→

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Frequently Asked Questions

What LeetCode problems does Roche ask in interviews?

Roche commonly asks 30 coding problems in technical interviews, including Zero Array Transformation III, Number of Islands, Binary Tree Right Side View. The difficulty breakdown is 2 Easy, 19 Medium, and 9 Hard problems.

How should I prepare for a Roche coding interview?

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

What is the difficulty level of Roche coding interviews?

Based on our data, Roche interviews include 2 Easy (7%), 19 Medium (63%), and 9 Hard (30%) problems.

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