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package LeetCode;public class TestNum14 { public static void main(String[] args) { String[] strs= {"flower","flow","flight"}; TestNum14 str = new TestNum14(); System.out.println(str.longestCommonPrefix(strs)); } publi.

public ListNode removeElements(ListNode head,int val){ if(head==null){ return null; } head.next=removeElements(head.next,val); if (head.val==val){ return head.next; } return head; .