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Find a Node in a DOM Tree (DFS/BFS)
Implement findNode(root, predicate) to traverse the DOM and return the first matching element. Use DFS/BFS with early exit. Complexity: O(n) time, O(h) recursion stack.
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Find a Node in a DOM Tree (DFS/BFS): Implement findNode(root, predicate) to traverse the DOM and return the first matching element. Use DFS/BFS with early exit. Complexity: O(n) time, O(h) recursion stack. Expect dom and tree decisions under intermediate level constraints.
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