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+package leetcode;%0A%0A/**%0A * https://leetcode.com/problems/partition-list/%0A */%0Apublic class Problem86 %7B%0A    public class ListNode %7B%0A        int val;%0A        ListNode next;%0A        ListNode(int x) %7B%0A            val = x;%0A        %7D%0A    %7D%0A%0A    public ListNode partition(ListNode head, int x) %7B%0A        // TODO%0A        return null;%0A    %7D%0A%0A    public static void main(String%5B%5D args) %7B%0A%0A    %7D%0A%7D%0A

Add problem 86