20 lines
370 B
TypeScript
20 lines
370 B
TypeScript
function walk(curr: BinaryNode<number> | null, path: number[]): number[] {
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if (!curr) {
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return path;
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}
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// pre
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path.push(curr.value);
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// recurse
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walk(curr.left, path);
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walk(curr.right, path);
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// post
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return path;
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}
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export default function pre_order_search(head: BinaryNode<number>): number[] {
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return walk(head, []);
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}
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