Thirty LeetCode problems arranged so each one builds on the last, in six blocks of five: arrays and hashing, two pointers and sliding window, binary search, stacks and queues, trees and graphs, dynamic programming. Every problem gives the number and name as it appears on LeetCode, the pattern tag, a plain-words statement, the key insight in one sentence, the target time complexity and a difficulty pill. Includes the 20-minute rule, a four-week schedule with rest days, and what to do inside the test itself. 13 pages, PDF.
Step 3 of 5: Pass the coding test
Top 30 LeetCode Problems for Freshers, In Order
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