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Linked list length odd or even
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Linked list length odd or even
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#include<stdio.h>
#include<stdlib.h>
#include<iostream>
using namespace std;
struct Node
{
int data;
struct Node* next;
Node(int x){
data = x;
next = NULL;
}
};
// Function to check the length of linklist
int isLengthEvenOrOdd(struct Node* head);
// Driver function
int main(void)
{
int t;
cin>>t;
while(t--)
{
int n,tmp,first, i ,l;
struct Node* head = NULL, *tail = NULL;
cin>>n;
cin>>first;
head = new Node(first);
tail = head;
for(i=0;i<n-1;i++)
{
cin>>l;
tail->next = new Node(l);
tail = tail->next;
}
if( isLengthEvenOrOdd(head) == 0) cout<<"Even\n";
else cout<<"Odd\n";
}
return 0;
}
// } Driver Code Ends
/*structure of a node of the linked list is as
struct Node
{
int data;
struct Node* next;
Node(int x){
data = x;
next = NULL;
}
};
*/
// Function should return 0 is length is even else return 1
int isLengthEvenOrOdd(struct Node* head)
{
int count=0;
while(head!=NULL)
{
count++;
head=head->next;
}
if(count%2==0)
{
return 0;
}
else
return 1;
}