103. Binary Tree Zigzag Level Order Traversal

Use the tabs to read the prompt, implementation, and tests separately. Syntax uses Shiki; tests can be executed on the server with node --test.

Same file as in the repo · ~20s timeout

From file header (JSDoc)

103. Binary Tree Zigzag Level Order Traversal
@param {import('../../lib/tree-node.js').TreeNode | null} root
@returns {number[][]}