Question 1

Binary Tree Zigzag Level Order Traversal — Sigmoid Interview Question

Accepted Answer

"Binary Tree Zigzag Level Order Traversal" is a medium difficulty problem asked at Sigmoid interviews. It covers the following topics: Tree, Breadth-First Search, Binary Tree. You can practice it on LeetCode: https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal

Question 2

Product of Array Except Self — Sigmoid Interview Question

Accepted Answer

"Product of Array Except Self" is a medium difficulty problem asked at Sigmoid interviews. It covers the following topics: Array, Prefix Sum. You can practice it on LeetCode: https://leetcode.com/problems/product-of-array-except-self

Question 3

Group Anagrams — Sigmoid Interview Question

Accepted Answer

"Group Anagrams" is a medium difficulty problem asked at Sigmoid interviews. It covers the following topics: Array, Hash Table, String, Sorting. You can practice it on LeetCode: https://leetcode.com/problems/group-anagrams

Question 4

Reverse Nodes in k-Group — Sigmoid Interview Question

Accepted Answer

"Reverse Nodes in k-Group" is a hard difficulty problem asked at Sigmoid interviews. It covers the following topics: Linked List, Recursion. You can practice it on LeetCode: https://leetcode.com/problems/reverse-nodes-in-k-group

Question 5

Max Consecutive Ones III — Sigmoid Interview Question

Accepted Answer

"Max Consecutive Ones III" is a medium difficulty problem asked at Sigmoid interviews. It covers the following topics: Array, Binary Search, Sliding Window, Prefix Sum. You can practice it on LeetCode: https://leetcode.com/problems/max-consecutive-ones-iii

Question 6

Boats to Save People — Sigmoid Interview Question

Accepted Answer

"Boats to Save People" is a medium difficulty problem asked at Sigmoid interviews. It covers the following topics: Array, Two Pointers, Greedy, Sorting. You can practice it on LeetCode: https://leetcode.com/problems/boats-to-save-people

#	Question Title	Difficulty	Frequency	Topics
1	Binary Tree Zigzag Level Order Traversal	MEDIUM	100.0	TreeBreadth-First SearchBinary Tree
2	Product of Array Except Self	MEDIUM	100.0	ArrayPrefix Sum
3	Group Anagrams	MEDIUM	100.0	ArrayHash TableString+1
4	Reverse Nodes in k-Group	HARD	100.0	Linked ListRecursion
5	Max Consecutive Ones III	MEDIUM	100.0	ArrayBinary SearchSliding Window+1
6	Boats to Save People	MEDIUM	100.0	ArrayTwo PointersGreedy+1

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