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export default class Solution {    #select: () => number;    constructor(w: number[]) {        this.#select = Selector(            w.map((v, i) => ({ result: i, chance: v })),        ).select;    }
    pickIndex(): number {        return this.#select();    }}import { Selector } from "https://deno.land/x/masx200_weighted_randomly_select@2.1.1/mod.ts";