GATE CSE
First time here? Checkout the FAQ!
x
0 votes
35 views

Consider the function f defined below.

    struct item {
        int data;
        struct item * next;
};
int f(struct item *p) {
    return ((p == NULL) || (p->next == NULL)|| 
        ((p->data <= p ->next -> data) &&
        f(p->next)));
}

For a given linked list p, the function  f returns 1 if and only if

  1. the list is empty or has exactly one element

  2. the elements in the list are sorted in non-decreasing order of data value

  3. the elements in the list are sorted in non-increasing order of data value

  4. not all elements in the list have the same data value

 

I m not getting it ,there is no return 1 statment so how thiz will right ?

asked in DS by Active (2k points)   | 35 views

1 Answer

0 votes

Option B)  return ((p == NULL) || (p->next == NULL)|| ((p->data <= p ->next -> data) && f(p->next))). Look at the return condition carefully. F will return true only if the value of all successive nodes are greater than the previous node. If there are no nodes or if there is only one node even then this function will return true. Hence the OR conditions (p == NULL) || (p->next == NULL).

answered by Loyal (3.5k points)  
cn u draw diagram by taking simple example

plz

Related questions

0 votes
1 answer
1
0 votes
0 answers
2
asked in Operating System by Wanted Active (2k points)   | 29 views
0 votes
0 answers
3
asked in Digital Logic by Wanted Active (2k points)   | 30 views


Top Users Mar 2017
  1. rude

    4272 Points

  2. sh!va

    2994 Points

  3. Rahul Jain25

    2804 Points

  4. Kapil

    2608 Points

  5. Debashish Deka

    2254 Points

  6. 2018

    1514 Points

  7. Vignesh Sekar

    1344 Points

  8. Akriti sood

    1262 Points

  9. Bikram

    1258 Points

  10. Sanjay Sharma

    1016 Points

Monthly Topper: Rs. 500 gift card

21,454 questions
26,775 answers
60,982 comments
22,994 users