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Insersionsortlist.cpp
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Insersionsortlist.cpp
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#include<iostream>
using namespace std;
struct ListNode {
int val;
ListNode *next;
ListNode(int x) : val(x), next(NULL) {}
};
ListNode* insertionSortList(ListNode* head) {
ListNode* h=new ListNode(0);
h->next=head;
ListNode* tmp1=h;
ListNode* tmp2=head;
int k=0;
if (head->next==NULL || head==NULL)
return head;
while (tmp2->next!=NULL)
{
int flag=0;
k++;
for (int i=0;i<k;i++)
{
if (tmp1->next->val>tmp2->next->val)
{
if (i==0)
{
ListNode* tttt=tmp2->next->next;
tmp2->next->next=head;
head=tmp2->next;
tmp2->next=tttt;
flag=1;
break;
}
else
{
ListNode* tt=tmp2->next->next;
tmp2->next->next=tmp1->next;
tmp1->next=tmp2->next;
tmp2->next=tt;
flag=1;
break;
}
}
tmp1=tmp1->next;
}
if (flag==0)
{
tmp2=tmp2->next;
}
h->next=head;
tmp1=h;
}
return head;
}
int main()
{
ListNode* head=new ListNode(2);
head->next=new ListNode(4);
head->next->next=new ListNode(3);
head->next->next->next=new ListNode(5);
head->next->next->next->next=new ListNode(1);
head->next->next->next->next->next=new ListNode(0);
ListNode* p=insertionSortList(head);
while (p!=NULL)
{
cout<<p->val<<endl;
p=p->next;
}
return 0;
}