1. 对应力扣题目连接
2. 实现案例代码
package com.dn.test.algorithmExercise.day1;
public class RemoveNthFromEnd {
public static void main(String[] args) {
RemoveNthFromEnd solution = new RemoveNthFromEnd();
ListNode head = new ListNode(1);
head.next = new ListNode(2);
head.next.next = new ListNode(3);
head.next.next.next = new ListNode(4);
head.next.next.next.next = new ListNode(5);
ListNode newHead = solution.removeNthFromEnd(head, 2);
printList(newHead);
}
public ListNode removeNthFromEnd(ListNode head, int n) {
ListNode dummy = new ListNode(0);
dummy.next = head;
ListNode fast = dummy;
ListNode slow = dummy;
for (int i = 0; i < n; i++) {
fast = fast.next;
}
while (fast.next != null) {
fast = fast.next;
slow = slow.next;
}
slow.next = slow.next.next;
return dummy.next;
}
public static void printList(ListNode head) {
ListNode current = head;
while (current != null) {
System.out.print(current.val + " ");
current = current.next;
}
System.out.println();
}
}