Write a program to reverse a linked list?
Answer Posted / murali
/* Error Checking is not done */
#include <stdio.h>
typedef struct node {
char ch;
struct node *next;
} list;
list* addNode(const list *start, char ch) {
list *ll;
ll = (list *)start;
while( ll->next != NULL ) { ll = ll->next; }
ll->next = (list *) malloc(sizeof(list));
ll->next->ch = ch;
ll->next->next = NULL;
return ll->next;
}
void printList(const list *start) {
list *ll;
ll = (list *)start;
while ( ll->next != NULL ) {
printf(" %c --> ", ll->ch );
ll = ll->next;
}
printf(" %c --> ", ll->ch );
printf( " NULL ");
}
void reverse(list *a, list *b) {
if( b->next != NULL )
reverse(b, b->next);
b->next = a;
a->next = NULL;
}
int main() {
list *end;
list *start = (list *) malloc(sizeof(list));
start->ch = 'A';
start->next = NULL;
addNode(start, 'B');
addNode(start, 'C');
addNode(start, 'D');
addNode(start, 'E');
end = addNode(start, 'F');
printList(start);
printf("\n");
reverse(start, start->next);
printList(end);
printf("\n");
return 0;
}
| Is This Answer Correct ? | 9 Yes | 5 No |
Post New Answer View All Answers
Why we use #include iostream in c++?
What is null c++?
Explain the scope of resolution operator.
Why c++ is called oop?
What are the basics of local (auto) objects?
What is pointer in c++ with example?
Define a constructor - what it is and how it might be called (2 methods)?
What is class definition in c++ ?
What is a far pointer? where we use it?
Can you be able to identify between straight- through and cross- over cable wiring? And in what case do you use straight- through and cross-over?
What is flush programming?
When does a 'this' pointer get created?
What is a Default constructor?
What is the best it certification?
What is the difference between #define debug 0 and #undef debug?