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Wei Xin

Enthusiastic programmer eager to contribute to team success through hard work, attention to detail and excellent organizational skills. Motivated to learn, grow and excel in Data Analytic field. Strengths in Java, Python, and SQL backed by training in data-related projects.

Average of Levels in Binary Tree

1 minute read

Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array.

Maximum Binary Tree

1 minute read

Construct the maximum tree by the given array and return the root node of this tree.

Second Minimum Node In a Binary Tree

1 minute read

Output the second minimum value in the set made of all the nodes’ value in the whole tree.

Minimum Difference Between BST Nodes

1 minute read

Given a Binary Search Tree (BST) with the root node root, return the minimum difference between the values of any two different nodes in the tree.

Binary Tree Pruning

1 minute read

Return this tree where every subtree (of the given tree) not containing a 1 has been removed.

Contains Duplicate

1 minute read

Question

Single Number

less than 1 minute read

Question

Rotate Array

1 minute read

Question

Wei Xin

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