leetcode 206. 反轉連結清單
- 問題描述
- 代碼
問題描述
反轉一個單連結清單。
示例:
輸入: 1->2->3->4->5->NULL
輸出: 5->4->3->2->1->NULL
代碼
var reverseList = function(head) {
let pre = null ;
let curr = head ;
let next = head ;
while( curr != null ){
next = curr.next ;
curr.next = pre ;
pre = curr ;
curr = next ;
}
return pre ;
};