Z

Zenefits

21 questions tracked17 with solutions
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Frequency scoreSorted highest β†’ lowest frequencyβœ“ Our Solution = we have a detailed walkthrough

Showing 21 of 21 questions

1
EasyMajority Elementβœ“ Our Solution
100
ArrayHash TableDivide and ConquerSorting+1
2
MediumNumber of Islandsβœ“ Our Solution
98
ArrayDepth-First SearchBreadth-First SearchUnion Find+1
3
MediumGraph Valid Tree
98
Depth-First SearchBreadth-First SearchUnion FindGraph
4
MediumVerify Preorder Sequence in Binary Search Tree
98
ArrayStackTreeBinary Search Tree+3
5
MediumFlatten 2D Vector
98
ArrayTwo PointersDesignIterator
6
HardSliding Window Maximumβœ“ Our Solution
98
ArrayQueueSliding WindowHeap (Priority Queue)+1
7
MediumMajority Element IIβœ“ Our Solution
98
ArrayHash TableSortingCounting
8
MediumCourse Schedule IIβœ“ Our Solution
98
Depth-First SearchBreadth-First SearchGraphTopological Sort
9
MediumCourse Scheduleβœ“ Our Solution
98
Depth-First SearchBreadth-First SearchGraphTopological Sort
10
EasyReverse Linked Listβœ“ Our Solution
98
Linked ListRecursion
11
HardMedian of Two Sorted Arraysβœ“ Our Solution
98
ArrayBinary SearchDivide and Conquer
12
EasyValid Parenthesesβœ“ Our Solution
98
StringStack
13
EasyExcel Sheet Column Titleβœ“ Our Solution
98
MathString
14
MediumMin Stackβœ“ Our Solution
98
StackDesign
15
MediumLRU Cacheβœ“ Our Solution
98
Hash TableLinked ListDesignDoubly-Linked List
16
EasyValid Palindromeβœ“ Our Solution
98
Two PointersString
17
MediumConvert Sorted List to Binary Search Treeβœ“ Our Solution
98
Linked ListDivide and ConquerTreeBinary Search Tree+1
18
HardN-Queens IIβœ“ Our Solution
98
Backtracking
19
HardTrapping Rain Waterβœ“ Our Solution
98
ArrayTwo PointersDynamic ProgrammingStack+1
20
MediumGenerate Parenthesesβœ“ Our Solution
98
StringDynamic ProgrammingBacktracking
21
HardShortest Distance from All Buildings
98
ArrayBreadth-First SearchMatrix