/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x) : val(x), next(NULL) {}
* };
*/
class Solution {
public:
ListNode* mergeTwoLists(ListNode* l1, ListNode* l2) {
ListNode tail(0),*set=&tail;
while(l1&&l2){
if(l1->val>l2->val){
set->next=l2;
l2=l2->next;
set=set->next;
}
else{
set->next=l1;
l1=l1->next;
set=set->next;
}
}
(set->next)=(l2?l2:l1);
return tail.next;
}
ListNode* mergeKLists(vector<ListNode*>& lists) {
int s1ze=lists.size();
if(lists.empty())return NULL;
if(s1ze=1)return lists[0];
while(s1ze>1){
for(int a=0;a<s1ze/2;++a){
lists[a]=mergeTwoLists(lists[a],lists[s1ze-1-a]);
s1ze=(s1ze+1)/2;
}
}
return lists[0];
}
};
已完成
执行用时: 8 ms
输入
[[1,4,5],[1,3,4],[2,6]]
输出
[1,4,5]
差别
预期结果
[1,1,2,3,4,4,5,6]
问题出现在倒数第十行的if语句中的判断 s1ze=1 正常应是s1ze==1;