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Backtracking questions
Subsets https://leetcode.com/problems/subsets/ public List<List<Integer>> subsets(int[] nums) { ...
Java common questions
Okay, here are concise explanations for each of your requested comparisons: Public vs Private a...
25 Questions
Graphs: 1. Clone Graph Given a reference of a node in a connected undirected graph. Return a deep...
15 patterns
https://www.youtube.com/watch?v=DjYZk8nrXVY Prefix Sum Range Sum Query - Immutable Contiguous Ar...
28 patterns for 14 weeks
Week 1 Two Sum Given an array of integers nums and an integer target, return indices of the two n...