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Interview Questions›Topics›Prefix Sum

Prefix Sum Interview Questions

Master 14 prefix sum problems frequently asked in technical interviews. These questions test your understanding of prefix sumconcepts and are essential for coding interview success.

14
Total Problems
0
Easy
12
Medium
2
Hard

Related Topics

ArrayBinary SearchHash TableGreedySortingSliding WindowMathHeap (Priority Queue)
#3639MediumFrequency: 93%

Zero Array Transformation I

Asked at Databricks
ArrayPrefix Sum
#1
Rank
#1046MediumFrequency: 91%

Max Consecutive Ones III

Asked at Oracle
ArrayBinary SearchSliding WindowPrefix Sum
#2
Rank
#912MediumFrequency: 87%

Random Pick with Weight

Asked at Meta
ArrayMathBinary SearchPrefix SumRandomized
#3
Rank
#560MediumFrequency: 81%

Subarray Sum Equals K

Asked at Meta
ArrayHash TablePrefix Sum
#4
Rank
#1966MediumFrequency: 79%

Frequency of the Most Frequent Element

Asked at Salesforce
ArrayBinary SearchGreedySliding WindowSortingPrefix Sum
#5
Rank
#325MediumFrequency: 71%

Maximum Size Subarray Sum Equals k

Asked at Apple
ArrayHash TablePrefix Sum
#6
Rank
#3647MediumFrequency: 67%

Zero Array Transformation III

Asked at Google
ArrayGreedySortingHeap (Priority Queue)Prefix Sum
#7
Rank
#410HardFrequency: 65%

Split Array Largest Sum

Asked at Apple
ArrayBinary SearchDynamic ProgrammingGreedyPrefix Sum
#8
Rank
#253MediumFrequency: 58%

Meeting Rooms II

Asked at Salesforce
ArrayTwo PointersGreedySortingHeap (Priority Queue)Prefix Sum
#9
Rank
#523MediumFrequency: 57%

Continuous Subarray Sum

Asked at TikTok
ArrayHash TableMathPrefix Sum
#10
Rank
#3643MediumFrequency: 54%

Zero Array Transformation II

Asked at PayPal
ArrayBinary SearchPrefix Sum
#11
Rank
#3410HardFrequency: 51%

Find Longest Self-Contained Substring

Asked at Apple
Hash TableStringBinary SearchPrefix Sum
#12
Rank
#238MediumFrequency: 45%

Product of Array Except Self

Asked at Amazon
ArrayPrefix Sum
#13
Rank
#1783MediumFrequency: 42%

Ways to Make a Fair Array

Asked at Infosys
ArrayPrefix Sum
#14
Rank
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