Trees and BST in JavaScript
Practice this questionWANT TO UNDERSTAND THE CONCEPT FIRST?Learn Trees and BST in JavaScript
Tree node
class TreeNode {
constructor(val, left = null, right = null) {
this.val = val;
this.left = left;
this.right = right;
}
}Problems to practice
- Inorder, preorder, postorder
- Level Order Traversal
- Maximum Depth
- Diameter of Tree
- Lowest Common Ancestor
- Validate BST
- Path Sum
Example: DFS
function inorder(root) {
if (!root) return [];
return [...inorder(root.left), root.val, ...inorder(root.right)];
}Adapted from 16_DSA_JAVASCRIPT.md · “7. Trees and BST in JavaScript”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.