/* This function should return a boolean (encoded as an int) indicating
* whether or not a path exists between the argument vertices.
* param: g Graph to perform the search in
* param: source Vertex to originate the search from
* param: destination Vertex to stop the search from (if it is found)
* ret: boolean indicating whether or not a path exists
*/
int DFS(Graph* g, Vertex* source, Vertex* destination)
{
/* FIXME you will write this */
struct cirListDeque *que = malloc(sizeof(struct cirListDeque));
struct Vertex *cur = malloc(sizeof(struct Vertex));
clearVisited(g);
initCirListDeque(que);
addFrontCirListDeque(que, source);
while(!isEmptyCirListDeque(que)){
cur = frontCirListDeque(que);
removeFrontCirListDeque(que);
if(cur == destination){
return 1;
}
else if(!cur->isVisited){
int i;
for(i=0; i<cur->numNeighbors; ++i){
if(!cur->neighbors[i]->isVisited){
addFrontCirListDeque(que, cur->neighbors[i]);
cur->neighbors[i]->isVisited = 1;
}
}
cur->isVisited =1;
}
}
return 0;
}
int main(){
struct cirListDeque* q = createCirListDeque();
addBackCirListDeque(q, (TYPE)1);
addBackCirListDeque(q, (TYPE)2);
addBackCirListDeque(q, (TYPE)3);
addFrontCirListDeque(q, (TYPE)4);
addFrontCirListDeque(q, (TYPE)5);
addFrontCirListDeque(q, (TYPE)6);
printCirListDeque(q);
printf("\n");
//6, 5, 4, 1, 2, 3
printf("%g\n", frontCirListDeque(q));
printf("\n");
//6
printf("%g\n", backCirListDeque(q));
printf("\n");
//3
removeFrontCirListDeque(q);
//5, 4, 1, 2, 3
removeBackCirListDeque(q);
//5, 4, 1, 2
printCirListDeque(q);
printf("\n");
//5, 4, 1, 2
reverseCirListDeque(q);
//2, 1, 4, 5
printCirListDeque(q);
printf("\n");
//2, 1, 4, 5
deleteCirListDeque(q);
return 0;
}
int main(){
struct cirListDeque* q = createCirListDeque();
addBackCirListDeque(q, (TYPE)1);
addBackCirListDeque(q, (TYPE)2);
addBackCirListDeque(q, (TYPE)3);
addFrontCirListDeque(q, (TYPE)4);
addFrontCirListDeque(q, (TYPE)5);
addFrontCirListDeque(q, (TYPE)6);
printCirListDeque(q);
printf("%g\n", frontCirListDeque(q));
printf("%g\n", backCirListDeque(q));
removeFrontCirListDeque(q);
removeBackCirListDeque(q);
printCirListDeque(q);
reverseCirListDeque(q);
printCirListDeque(q);
return 0;
}
/* This function should return a boolean (encoded as an int) indicating
* whether or not a path exists between the argument vertices.
* param: g Graph to perform the search in
* param: source Vertex to originate the search from
* param: destination Vertex to stop the search from (if it is found)
* ret: boolean indicating whether or not a path exists
*/
int BFS(Graph* g, Vertex* source, Vertex* destination){
/* FIXME you will write this */
/* create and initialize circular list deque pointer */
struct cirListDeque *stack = malloc(sizeof(struct cirListDeque));
initCirListDeque(stack);
/*/ create vertex pointer and clear visited nodes */
struct Vertex *temp = source;
clearVisited(g);
/* add to front */
addFrontCirListDeque(stack, temp);
/* if not empty, use BFS */
while(!isEmptyCirListDeque(stack)){
/*remove back(top) value */
temp = backCirListDeque(stack);
removeBackCirListDeque(stack);
/* check if visited, mark, and return true */
if(!temp -> isVisited){
temp -> isVisited = 1;
}
if(temp == destination){
removeAllCirListDeque(stack);
return 1;
}
/* check is the neighboring nodes have been visited. add to stack if not */
for(int i = 0; i < temp->numNeighbors; i++){
if(!temp->neighbors[i]->isVisited){
addFrontCirListDeque(stack, temp->neighbors[i]);
}
}
}
return 0;
}
/* This function should return a boolean (encoded as an int) indicating
* whether or not a path exists between the argument vertices.
* param: g Graph to perform the search in
* param: source Vertex to originate the search from
* param: destination Vertex to stop the search from (if it is found)
* ret: boolean indicating whether or not a path exists
*/
int DFS(Graph* g, Vertex* source, Vertex* destination){
/* FIXME you will write this */
struct cirListDeque *stack = malloc(sizeof(struct cirListDeque));
initCirListDeque(stack);
struct Vertex *temp = source;
clearVisited(g);
/* add to the front of the circular list deque */
addFrontCirListDeque(stack, temp);
/*if it isn't empty, use DFS */
while(!isEmptyCirListDeque(stack)){
temp = backCirListDeque(stack);
removeBackCirListDeque(stack);
/* check if visited, mark if it hasn't been visited */
if(!temp -> isVisited){
temp ->isVisited = 1;
}
if(temp == destination){
/* if you reach the destination, remove from the list to free memory, return 1 */
removeAllCirListDeque(stack);
return 1;
}
/* check is the neighboring nodes have been visited. add to stack if not */
for(int i = 0; i < temp->numNeighbors; i++){
if(!temp->neighbors[i] -> isVisited){
addFrontCirListDeque(stack, temp->neighbors[i]);
}
}
}
return 0;
}
/* This function should return a boolean (encoded as an int) indicating
* whether or not a path exists between the argument vertices.
* param: g Graph to perform the search in
* param: source Vertex to originate the search from
* param: destination Vertex to stop the search from (if it is found)
* ret: boolean indicating whether or not a path exists
*/
int DFS(Graph* g, Vertex* source, Vertex* destination)
{
/* FIXME you will write this */
//use stack, add front, remove front
int contains = 0;
struct cirListDeque *stack = malloc(sizeof(struct cirListDeque));
initCirListDeque(stack);
clearVisited(g);
struct Vertex *current;
current = source;
while(current != destination)
{
if(current->isVisited == 0)
{
current->isVisited = 1;
for(int x = 0; x < current->numNeighbors; x++)
{
if(current->neighbors[x]->isVisited == 0)
{
addFrontCirListDeque(stack, current->neighbors[x]);
}
}
if(!isEmptyCirListDeque(stack))
{
current = frontCirListDeque(stack);
removeFrontCirListDeque(stack);
}
else
return contains;
}
else
{
if(!isEmptyCirListDeque(stack))
{
current = frontCirListDeque(stack);
removeFrontCirListDeque(stack);
}
else
return contains;
}
}
if(current == destination)
{contains = 1;}
removeAllCirListDeque(stack);
return contains;
}
int main () {
struct cirListDeque testDeque;
printf("Testing Deque ADT based on Circularly-Doubly-Linked List \n");
/*Initialize the deque */
initCirListDeque(&testDeque);
/*Add 3 to the back */
addBackCirListDeque(&testDeque, 3);
/*Add 4 to the back */
addBackCirListDeque(&testDeque, 4);
/*Add 5 to the back */
addBackCirListDeque(&testDeque, 5);
/*Should print 3.0 4.0 5.0 */
printCirListDeque(&testDeque);
/*Add 2 to the front */
addFrontCirListDeque(&testDeque, 2);
/*Add 1 to the front */
addFrontCirListDeque(&testDeque, 1);
/*Should print 1.0, 2.0, 3.0, 4.0, 5.0 */
printCirListDeque(&testDeque);
/*Should print front: 5.0; back: 1.0 */
printf("front: %g; back: %g\n\n", frontCirListDeque(&testDeque), backCirListDeque(&testDeque));
/*Remove the back of the deque */
removeBackCirListDeque(&testDeque);
/*Should print front: 5.0; back: 2.0 */
printf("front: %g; back: %g\n\n", frontCirListDeque(&testDeque), backCirListDeque(&testDeque));
/*Remove the front of the deque */
removeFrontCirListDeque(&testDeque);
/*Should print front: 4.0; back: 2.0 */
printf("front: %g; back: %g\n\n", frontCirListDeque(&testDeque), backCirListDeque(&testDeque));
freeCirListDeque(&testDeque);
return EXIT_SUCCESS;
}
/* This function should return a boolean (encoded as an int) indicating
* whether or not a path exists between the argument vertices.
* param: g Graph to perform the search in
* param: source Vertex to originate the search from
* param: destination Vertex to stop the search from (if it is found)
* ret: boolean indicating whether or not a path exists
*/
int BFS(Graph* g, Vertex* source, Vertex* destination)
{
/* DONE you will write this */
/* use a queue */
clearVisited(g);
cirListDeque *queue = malloc(sizeof(cirListDeque));
initCirListDeque(queue);
Vertex *current = source;
int i;
for (i = 0; i < current->numNeighbors; i++) {
addFrontCirListDeque(queue, current->neighbors[i]);
}
current->isVisited = 1;
while (! isEmptyCirListDeque(queue)) {
current = backCirListDeque(queue);
removeBackCirListDeque(queue);
if (current == destination) {
return 1;
}
current->isVisited = 1;
for (i = 0; i < current->numNeighbors; i++) {
if (! current->neighbors[i]->isVisited) {
addFrontCirListDeque(queue, current->neighbors[i]);
}
}
}
return 0;
}
int main()
{
struct cirListDeque* q = createCirListDeque();
addBackCirListDeque(q, (TYPE)1); //adds to back of deque 3 times
addBackCirListDeque(q, (TYPE)2);
addBackCirListDeque(q, (TYPE)3);
addFrontCirListDeque(q, (TYPE)4); //adds to front of deque 3 times
addFrontCirListDeque(q, (TYPE)5);
addFrontCirListDeque(q, (TYPE)6); // should end up being 6 5 4 1 2 3
printf("Printing list.\n");
printCirListDeque(q);
printf("\nDisplaying front and back of list.");
printf("\nFront: %g", frontCirListDeque(q));
printf("\nBack: %g\n", backCirListDeque(q));
removeFrontCirListDeque(q); // removes 6
removeBackCirListDeque(q); // removes 3
printf("\nList with front and back removed.\n");
printCirListDeque(q);
printf("\nList will get reversed.\n");
reverseCirListDeque(q); // reverses deque should be 2 1 4 5
printCirListDeque(q);
printf("\n");
return 0;
}
