LeetCode

If you have more problem suggestions, shoot me a note!

By difficulty

Easy

141. Linked List Cycle

Medium

Hard

4. Median of Two Sorted Arrays (I like to suffer)

297. Serialize and Deserialize Binary Tree

442. Trapping Rain Water

312. Burst Balloons

For most internship interviews, doing LeetCode’s Top 100 Liked collection twice (important!) have more than sufficed for me. For full time, I’m under the impression (may be wrong) that doing Algo 170 twice + some more topic-specific training suffices in most cases.

For video solutions, I highly recommend Hua Hua‘s videos if you speak Chinese.

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