Leetcode

Algorithm

[Leetcode] Add Two Numbers

Add the two numbers and return it as a linked list.

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Algorithm

[Leetcode] Binary Tree Zigzag Level Order Traversal

Given a binary tree, return the zigzag level order traversal of its nodes' values.

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Algorithm

[Leetcode] Unique Paths

How many possible unique paths are there?

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Algorithm

[Leetcode] Trapping Rain Water

compute how much water it is able to trap after raining.