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import { ListNode } from "../reverse-linked-list/ListNode.ts";
export function get_length_of_list(list?: ListNode | null): number {    if (!list) return 0;    const head = list;    let start = head;    let i = 1;    for (; true; i++) {        if (start.next) {            start = start.next;        } else {            break;        }    }    return i;}