package com.zerroi.leetcode.Three25;

class ListNode {
    int val;
    ListNode next;

    ListNode() {
    }

    ListNode(int val) {
        this.val = val;
    }

    ListNode(int val, ListNode next) {
        this.val = val;
        this.next = next;
    }
    public static ListNode constructLinkedList(int[] nums) {
        if (nums == null || nums.length == 0) {
            return null;
        }

        ListNode dummy = new ListNode(); // 创建一个虚拟头节点
        ListNode current = dummy;

        for (int num : nums) {
            current.next = new ListNode(num);
            current = current.next;
        }

        return dummy.next; // 返回真正的头节点
    }
}