leetcode Merge Two Sorted Lists
2017-10-09 16:17
495 查看
class Solution {
public:
ListNode* mergeTwoLists(ListNode* l1,
ListNode* l2) {
ListNode* current1=l1;
ListNode* current2=l2;
ListNode* res=new
ListNode(0);
ListNode* result=res;
if(!l1)
return l2;
if(!l2)
return l1;
while(current1&¤t2)
{
if(current1->val<current2->val)
{
res->next=current1;
current1=current1->next;
}
else
{
res->next=current2;
current2=current2->next;
}
res=res->next;
}
if(!current1)
res->next=current2;
if(!current2)
res->next=current1;
return result->next;
}
};
public:
ListNode* mergeTwoLists(ListNode* l1,
ListNode* l2) {
ListNode* current1=l1;
ListNode* current2=l2;
ListNode* res=new
ListNode(0);
ListNode* result=res;
if(!l1)
return l2;
if(!l2)
return l1;
while(current1&¤t2)
{
if(current1->val<current2->val)
{
res->next=current1;
current1=current1->next;
}
else
{
res->next=current2;
current2=current2->next;
}
res=res->next;
}
if(!current1)
res->next=current2;
if(!current2)
res->next=current1;
return result->next;
}
};
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