forked from knaxus/problem-solving-javascript
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathindex.js
45 lines (40 loc) · 921 Bytes
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
// eslint-disable-next-line no-unused-vars
const BST = require('../index');
function searchAndPush(root, value, result) {
/**
* search the given node and meanwhile
* keep pushing the visited nodes
*/
if (root == null) {
return false;
}
if (root.value === value) {
return true;
}
if (
searchAndPush(root.leftChild, value, result)
|| searchAndPush(root.rightChild, value, result)
) {
result.push(root.value);
return true;
}
return false;
}
function findAncestors(root, value) {
const result = [];
searchAndPush(root, value, result);
return result;
}
// create a BST
// const myBST = new BST(6);
// myBST.add(4);
// myBST.add(9);
// myBST.add(2);
// myBST.add(5);
// myBST.add(14);
// myBST.add(8);
// myBST.add(12);
// myBST.add(10);
// console.log(findAncestors(myBST.root, 10));
// console.log(findAncestors(myBST.root, 101));
module.exports = findAncestors;