题解 | #判断链表中是否有环#
判断链表中是否有环
https://www.nowcoder.com/practice/650474f313294468a4ded3ce0f7898b9
/*
* function ListNode(x){
* this.val = x;
* this.next = null;
* }
*/
/**
*
* @param head ListNode类
* @return bool布尔型
*/
function hasCycle( head ) {
// write code here
while (head) {
if(head.val === 'ha') {
return true
}
head.val = 'ha'
head = head.next
}
return false
}
module.exports = {
hasCycle : hasCycle
};
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