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Siemens LeetCode Questions 2026

Browse LeetCode problems frequently asked by Siemens. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 10 July 2026

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Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Valid Parentheses	EASY	75%	StringStack
Merge Two Sorted Lists	EASY	62.5%	Linked ListRecursion
Merge Intervals	MEDIUM	87.5%	ArraySorting
Peaks in Array	HARD	100%	ArrayBinary Indexed TreeSegment Tree
Minimized Maximum of Products Distributed to Any Store	MEDIUM	100%	ArrayBinary SearchGreedy
Number of Islands	MEDIUM	87.5%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Valid Anagram	EASY	62.5%	Hash TableStringSorting
Maximum Product of Three Numbers	EASY	62.5%	ArrayMathSorting
Angle Between Hands of a Clock	MEDIUM	62.5%	Math
Remove Duplicates from Sorted Array	EASY	62.5%	ArrayTwo Pointers
Group Anagrams	MEDIUM	62.5%	ArrayHash TableStringSorting
The Skyline Problem	HARD	75%	ArrayDivide and ConquerBinary Indexed TreeSegment TreeSweep LineSortingHeap (Priority Queue)Ordered Set
Minimum Add to Make Parentheses Valid	MEDIUM	62.5%	StringStackGreedy
LRU Cache	MEDIUM	75%	Hash TableLinked ListDesignDoubly-Linked List
Longest Palindromic Substring	MEDIUM	62.5%	Two PointersStringDynamic Programming
Maximum Product Subarray	MEDIUM	62.5%	ArrayDynamic Programming
Single Number III	MEDIUM	62.5%	ArrayBit Manipulation
Top K Frequent Elements	MEDIUM	62.5%	ArrayHash TableDivide and ConquerSortingHeap (Priority Queue)Bucket SortCountingQuickselect
Rotate Array	MEDIUM	62.5%	ArrayMathTwo Pointers
Clone Graph	MEDIUM	62.5%	Hash TableDepth-First SearchBreadth-First SearchGraph Theory

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