var getKthFromEnd = function(head, k) {
let fast = head
let slow = head
while(k--) {
fast = fast.next
}
while (fast){
fast = fast.next
slow = slow.next
}
return slow
};
var getKthFromEnd = function(head, k) {
let fast = head
let slow = head
while(k--) {
fast = fast.next
}
while (fast){
fast = fast.next
slow = slow.next
}
return slow
};
单链表逆置
输入一个单向链表,输出该链表中倒数第K
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