Answer / sivaraj

BOOL findloop(struct node *start)
{
struct node *ptr,*ptr1;
ptr=start;
ptr1= start->next;
while(ptr!=NULL && ptr->next!=null && ptr1->next!=null &&
ptr1->next->next!=null)
{
if(ptr==ptr1)
return FALSE;
ptr=ptr->next;
ptr1=ptr1->next->next;
}
return TRUE;
}

Answer / sanyam

the approach is to mark the nodes starting from the head.and
follow the links.
in the process if you find a node already marked then there
is loop.

Answer / adi

answer 2 is correct

Answer / priya

same logic as 3rd answer..

typedef struct node
{ int data,mark; /*mark is all initialised to 0*/
node *next;
}node;

node* findloop(node* start)
{
node *p=start;
while(p)
{
if(p->mark==0)
{
p->mark=1;
p=p->next;
}
else
{
return p;
}
}
return p;
}

Answer / karthik

I guess the return shud b TRUE in the if(ptr==ptr1) block
since that's the oly condition for presence of a loop in the
LL.. and return shud b a false after d while loop!!!

Answer / zameer arif

You are right. In the loop, return should be true. outside
the loop, false.

Answer / anurag srivastava

void lopp( node **start)
{
node *temp,*newnode;
temp=*start;
while(*temp && !(temp->next==start))
{ temp=temp->next; }
if(!(*temp)) printf("Non loop");
else printf("Loop");
}

Answer / s.v.prasad reddy

findloop(struct node *start)
{
struct node *ptr,*ptr1;
start=ptr;

while(ptr!=NULL)
{
ptr1=ptr->next;

while(ptr1!=NULL)
{
if(ptr1->link==ptr->link)
{
printf("\nLoop found at %d node",ptr->data);
exit(0);
}
ptr1=ptr1->link;
}
ptr=ptr->link;
}
printf("\nNo Loop found in list");
}

Is the following code legal? typedef struct a aType; struct a { int x; aType *b; };

1 Answers  

What are the following notations of defining functions known as? i. int abc(int a,float b) { /* some code */ } ii. int abc(a,b) int a; float b; { /* some code*/ }

1 Answers  

Link list in reverse order.

8 Answers   NetApp,

how to create a 3x3 two dimensional array that will give you the sums on the left and bottom columns

0 Answers  

Give a oneline C expression to test whether a number is a power of 2?

25 Answers   EA Electronic Arts, Google, Motorola,

Write a Program that Inputs 10 Numbers in an Array and Show the Maximum Number

2 Answers   Ace Info,

pls anyone can help me to write a code to print the values in words for any value.Example:1034 to print as "one thousand and thirty four only"

2 Answers  

main() { int c[ ]={2.8,3.4,4,6.7,5}; int j,*p=c,*q=c; for(j=0;j<5;j++) { printf(" %d ",*c); ++q; } for(j=0;j<5;j++){ printf(" %d ",*p); ++p; } }

2 Answers   CSS, Wipro,

func(a,b) int a,b; { return( a= (a==b) ); } main() { int process(),func(); printf("The value of process is %d !\n ",process(func,3,6)); } process(pf,val1,val2) int (*pf) (); int val1,val2; { return((*pf) (val1,val2)); }

1 Answers   Satyam,

main() { char *p; p="Hello"; printf("%c\n",*&*p); }

1 Answers  

main() { int i=5,j=6,z; printf("%d",i+++j); }

2 Answers  

#include<stdio.h> int main() { int a=3,post,pre; post= a++ * a++ * a++; a=3; pre= ++a * ++a * ++a; printf("post=%d pre=%d",post,pre); return 0; }

3 Answers