mirror of
https://github.com/zrwusa/data-structure-typed.git
synced 2024-11-10 08:04:05 +00:00
111 lines
3.9 KiB
TypeScript
111 lines
3.9 KiB
TypeScript
import { AVLTree, CP } from 'data-structure-typed';
|
|
|
|
describe('AVL Tree Test from data-structure-typed', () => {
|
|
it('should perform various operations on a AVL Tree from data-structure-typed', () => {
|
|
const keys = [11, 3, 15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5];
|
|
const tree = new AVLTree();
|
|
|
|
for (const i of keys) tree.add([i, i]);
|
|
|
|
const node6 = tree.get(6);
|
|
|
|
expect(node6 && tree.getHeight(node6)).toBe(3);
|
|
expect(node6 && tree.getDepth(node6)).toBe(1);
|
|
|
|
const getValueById = tree.get(10);
|
|
expect(getValueById).toBe(10);
|
|
|
|
const getMinNodeByRoot = tree.getLeftMost();
|
|
expect(getMinNodeByRoot?.key).toBe(1);
|
|
|
|
const node15 = tree.getNode(15);
|
|
const getMinNodeBySpecificNode = node15 && tree.getLeftMost(node15);
|
|
expect(getMinNodeBySpecificNode?.key).toBe(12);
|
|
|
|
let subTreeSum = 0;
|
|
node15 && tree.dfs(node => (subTreeSum += node.key), 'pre', 15);
|
|
expect(subTreeSum).toBe(70);
|
|
|
|
let lesserSum = 0;
|
|
tree.lesserOrGreaterTraverse(node => (lesserSum += node.key), CP.lt, 10);
|
|
expect(lesserSum).toBe(45);
|
|
|
|
// node15 has type problem. After the uniform design, the generics of containers (DirectedGraph, BST) are based on the type of value. However, this design has a drawback: when I attempt to inherit from the Vertex or BSTNode classes, the types of the results obtained by all methods are those of the parent class.
|
|
expect(node15?.value).toBe(15);
|
|
|
|
const dfs = tree.dfs(node => node, 'in');
|
|
expect(dfs[0].key).toBe(1);
|
|
expect(dfs[dfs.length - 1].key).toBe(16);
|
|
|
|
tree.perfectlyBalance();
|
|
const bfs = tree.bfs(node => node);
|
|
expect(tree.isPerfectlyBalanced()).toBe(true);
|
|
expect(bfs[0].key).toBe(8);
|
|
expect(bfs[bfs.length - 1].key).toBe(16);
|
|
|
|
expect(tree.delete(11)[0].deleted?.key).toBe(11);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(node15 && tree.getHeight(node15)).toBe(2);
|
|
|
|
expect(tree.delete(1)[0].deleted?.key).toBe(1);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(4);
|
|
|
|
expect(tree.delete(4)[0].deleted?.key).toBe(4);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(4);
|
|
|
|
expect(tree.delete(10)[0].deleted?.key).toBe(10);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(3);
|
|
|
|
expect(tree.delete(15)[0].deleted?.key).toBe(15);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
|
|
expect(tree.getHeight()).toBe(3);
|
|
|
|
expect(tree.delete(5)[0].deleted?.key).toBe(5);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(3);
|
|
|
|
expect(tree.delete(13)[0].deleted?.key).toBe(13);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(3);
|
|
|
|
expect(tree.delete(3)[0].deleted?.key).toBe(3);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(3);
|
|
|
|
expect(tree.delete(8)[0].deleted?.key).toBe(8);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(3);
|
|
|
|
expect(tree.delete(6)[0].deleted?.key).toBe(6);
|
|
expect(tree.delete(6).length).toBe(0);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(2);
|
|
|
|
expect(tree.delete(7)[0].deleted?.key).toBe(7);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(2);
|
|
|
|
expect(tree.delete(9)[0].deleted?.key).toBe(9);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(2);
|
|
expect(tree.delete(14)[0].deleted?.key).toBe(14);
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
expect(tree.getHeight()).toBe(1);
|
|
|
|
expect(tree.isAVLBalanced()).toBe(true);
|
|
const lastBFSIds = tree.bfs();
|
|
expect(lastBFSIds[0]).toBe(12);
|
|
expect(lastBFSIds[1]).toBe(2);
|
|
expect(lastBFSIds[2]).toBe(16);
|
|
|
|
const lastBFSNodes = tree.bfs(node => node);
|
|
expect(lastBFSNodes[0].key).toBe(12);
|
|
expect(lastBFSNodes[1].key).toBe(2);
|
|
expect(lastBFSNodes[2].key).toBe(16);
|
|
});
|
|
});
|