876. Middle of the Linked List - LeetCode

阿新 • • 發佈：2018-08-02

ble 題目兩個 etc ems eno The lin clas

Question

876.?Middle of the Linked List

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Solution

題目大意：求鏈表的中間節點

思路：構造兩個節點，遍歷鏈接，一個每次走一步，另一個每次走兩步，一個遍歷完鏈表，另一個恰好在中間

Java實現：

public ListNode middleNode(ListNode head) {
    ListNode slow = head;
    ListNode fast = head;
    while (fast != null) {
        fast = fast.next;
        if(fast != null) {
            fast = fast.next;
            slow = slow.next;
        }
    }
    return slow;
}

876. Middle of the Linked List - LeetCode

ble 題目兩個 etc ems eno The lin clas Question 876.?Middle of the Linked List Solution 題目大意：求鏈表的中間節點思路：構造兩個節點，遍歷鏈接，一個每次走一步，另一個每次走兩步，一個遍歷完鏈

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876. Middle of the Linked List - LeetCode

Question

Solution

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