Siemens

26 LeetCode interview questions

Difficulty Distribution

Easy

38%

Medium

50%

Hard

12%

All Questions

Title	Difficulty	Acceptance	Frequency	Topics
Peaks in Array	Hard	27.1%	100.0%	ArrayBinary Indexed TreeSegment Tree
Minimized Maximum of Products Distributed to Any Store	Medium	63.0%	100.0%	ArrayBinary SearchGreedy
Number of Islands	Medium	63.8%	100.0%	ArrayDepth-First SearchBreadth-First Search+2
Merge Intervals	Medium	51.1%	87.5%	ArraySorting
Two Sum	Easy	57.1%	75.0%	ArrayHash Table
Valid Parentheses	Easy	43.7%	75.0%	StringStack
Merge Two Sorted Lists	Easy	67.9%	75.0%	Linked ListRecursion
Reverse Linked List	Easy	80.3%	75.0%	Linked ListRecursion
The Skyline Problem	Hard	45.0%	75.0%	ArrayDivide and ConquerBinary Indexed Tree+5
LRU Cache	Medium	46.8%	75.0%	Hash TableLinked ListDesign+1
First Missing Positive	Hard	42.4%	62.5%	ArrayHash Table
Contains Duplicate	Easy	64.1%	62.5%	ArrayHash TableSorting
Rotate List	Medium	41.2%	62.5%	Linked ListTwo Pointers
Valid Anagram	Easy	67.8%	62.5%	Hash TableStringSorting
Palindrome Linked List	Easy	57.4%	62.5%	Linked ListTwo PointersStack+1
Maximum Product of Three Numbers	Easy	45.7%	62.5%	ArrayMathSorting
Angle Between Hands of a Clock	Medium	64.4%	62.5%	Math
Remove Duplicates from Sorted Array	Easy	62.2%	62.5%	ArrayTwo Pointers
Group Anagrams	Medium	72.2%	62.5%	ArrayHash TableString+1
Minimum Add to Make Parentheses Valid	Medium	74.4%	62.5%	StringStackGreedy
Longest Palindromic Substring	Medium	37.3%	62.5%	Two PointersStringDynamic Programming
Maximum Product Subarray	Medium	36.0%	62.5%	ArrayDynamic Programming
Single Number III	Medium	70.4%	62.5%	ArrayBit Manipulation
Top K Frequent Elements	Medium	65.8%	62.5%	ArrayHash TableDivide and Conquer+5
Rotate Array	Medium	44.4%	62.5%	ArrayMathTwo Pointers
Palindrome Number	Easy	60.2%	62.5%	Math

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