Question 1

How many LeetCode questions does Sigmoid ask in interviews?

Accepted Answer

Sigmoid has 14 known LeetCode interview questions. The difficulty breakdown is 4 Easy, 9 Medium, and 1 Hard problems.

Question 2

What are the most common topics in Sigmoid coding interviews?

Accepted Answer

The most frequently asked topics at Sigmoid are Array (9 questions), String (4 questions), Breadth-First Search (3 questions), Dynamic Programming (3 questions), Two Pointers (2 questions). Focus on these topics to maximize your preparation.

Question 3

How should I prepare for a Sigmoid coding interview?

Accepted Answer

Start with the most frequently asked Sigmoid problems on CodeJeet, sorted by frequency. Focus on Medium difficulty first since Sigmoid asks 9 Medium problems. Practice the top topics: Array, String, Breadth-First Search.

Title	Difficulty	Acceptance	Frequency	Topics
Binary Tree Zigzag Level Order Traversal	Medium	63.2%	100.0%	TreeBreadth-First SearchBinary Tree
Best Time to Buy and Sell Stock	Easy	56.4%	91.7%	ArrayDynamic Programming
Longest Common Prefix	Easy	47.1%	80.1%	ArrayStringTrie
Product of Array Except Self	Medium	68.6%	80.1%	ArrayPrefix Sum
Reverse Nodes in k-Group	Hard	65.4%	80.1%	Linked ListRecursion
Boats to Save People	Medium	61.4%	80.1%	ArrayTwo PointersGreedy+1
Valid Parentheses	Easy	43.7%	80.1%	StringStack
Longest Substring Without Repeating Characters	Medium	38.5%	80.1%	Hash TableStringSliding Window
Min Stack	Medium	57.7%	80.1%	StackDesign
Best Time to Buy and Sell Stock II	Medium	70.8%	80.1%	ArrayDynamic ProgrammingGreedy
Move Zeroes	Easy	63.6%	80.1%	ArrayTwo Pointers
Rotting Oranges	Medium	58.2%	80.1%	ArrayBreadth-First SearchMatrix
Group Anagrams	Medium	72.2%	80.1%	ArrayHash TableString+1
Coin Change	Medium	48.0%	80.1%	ArrayDynamic ProgrammingBreadth-First Search

Sigmoid

Difficulty Distribution

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