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const array = Symbol();import { ListNode } from "../mod.ts";
class Solution {    [array]: number[] = [];    constructor(head: ListNode | null) {        while (head) {            this[array].push(head.val);
            head = head.next;        }    }
    getRandom(): number {        return this[array][Math.floor(this[array].length * Math.random())];    }}
export default Solution;