Sigmoid

14 LeetCode interview questions

Difficulty Distribution

Easy

3

21%

Medium

9

64%

Hard

2

14%

Top Topics

Array(9)Stack(4)Two Pointers(3)String(3)Dynamic Programming(3)Prefix Sum(2)Sliding Window(2)Greedy(2)Sorting(2)Hash Table(2)

All Questions

Title	Difficulty	Acceptance	Frequency	Topics
Binary Tree Zigzag Level Order Traversal	Medium	63.1%	100.0%	TreeBreadth-First SearchBinary Tree
Best Time to Buy and Sell Stock	Easy	56.4%	87.5%	ArrayDynamic Programming
Product of Array Except Self	Medium	68.6%	75.0%	ArrayPrefix Sum
Reverse Nodes in k-Group	Hard	65.3%	75.0%	Linked ListRecursion
Max Consecutive Ones III	Medium	67.3%	75.0%	ArrayBinary SearchSliding Window+1
Boats to Save People	Medium	61.4%	75.0%	ArrayTwo PointersGreedy+1
Valid Parentheses	Easy	43.7%	75.0%	StringStack
Longest Substring Without Repeating Characters	Medium	38.5%	75.0%	Hash TableStringSliding Window
Min Stack	Medium	57.7%	75.0%	StackDesign
Trapping Rain Water	Hard	66.8%	75.0%	ArrayTwo PointersDynamic Programming+2
Best Time to Buy and Sell Stock II	Medium	70.7%	75.0%	ArrayDynamic ProgrammingGreedy
Next Greater Element II	Medium	67.9%	75.0%	ArrayStackMonotonic Stack
Move Zeroes	Easy	63.5%	75.0%	ArrayTwo Pointers
Group Anagrams	Medium	72.2%	75.0%	ArrayHash TableString+1

Showing 14 of 14 questions