移除鏈表元素

刪除鏈表中等於給定值 val 的全部節點。python 示例:code 輸入: 1->2->6->3->4->5->6, val = 6 輸出: 1->2->3->4->5   解法1：迭代 # Definition for singly-linked list. # class ListNode: # def __init__(self, x): # self.val =

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