题解 | #链表中环的入口结点#
链表中环的入口结点
http://www.nowcoder.com/practice/253d2c59ec3e4bc68da16833f79a38e4
/*function ListNode(x){
this.val = x;
this.next = null;
}*/
function EntryNodeOfLoop(pHead)
{
while(pHead !== null){
if(pHead.flag){
return pHead
}else{
pHead.flag = true;
pHead = pHead.next
}
}
return null
}
module.exports = {
EntryNodeOfLoop : EntryNodeOfLoop
};
查看3道真题和解析
