TreeNode *createBST( ListNode *node, int start, int end )
{
if( node == NULL ) return NULL;
if( start>end ) return NULL;
int mid = (start+end)/2;
ListNode *current = node;
for( int i = start ; i<mid; i++ )
{
current = current->next;
}
TreeNode *newNode = new TreeNode( current->val );
newNode->left = createBST( node, start, mid-1);
newNode->right = createBST( current->next, mid+1, end );
return newNode;
}
void ex4_6() {
std::cout << "ex4.6 \n";
std::vector<int> in;
for (int sample = 0; sample < 10; ++sample)
in.push_back(std::rand() % 2000);
std::sort(in.begin(), in.end());
TreeNode<int>* node = createBST(in, 0, (int) in.size()) ;
auto root = node;
TreeNode<int>* rightmost = root;
std::cout << "root.value=" << root->value << ", node.value=" << node->value << ", rightmost.value=" << rightmost->value << std::endl;
rightmost = rightmost->right;
rightmost = rightmost->right;
auto next = getNextNode(rightmost);
std::cout << "next node of node " << rightmost->value << " is " << (next ? next->value : -1 ) << std::endl; // std::cout << " sample size=" << in.size() << ", max height = " << height << ", log(size)=" << log2(in.size()) << std::endl;
//std::cout << "is it a BST? " << checkBST(node);
auto lists = createLists(node);
for (int depth = 0; depth < lists.size(); ++depth) {
std::cout << " level " << depth << ": ";
for (auto elem : lists[depth]) {
std::cout << elem->value << ", ";
}
std::cout << std::endl;
}
std::cout << "next node of node " << node->value << " is " << getNextNode(node)->value << std::endl;
node = node->right;
std::cout << "next node of node " << node->value << " is " << getNextNode(node)->value << std::endl;
node = node->left;
std::cout << "next node of node " << node->value << " is " << getNextNode(node)->value << std::endl;
node = node->left;
std::cout << "next node of node " << node->value << " is " << getNextNode(node)->value << std::endl;
}
int main(){
printf("Creating a binary search tree\n");
struct BSTNode* root =NULL;
root = createBST(root);
printf("\nPrinting LeafNodes \n");
listLeaves(root);
}
TreeNode<T>* createBST(const std::vector<T>& sorted, int first, int last) {
int rootInd = (last - first) / 2 + first;
if (last == first + 1) // base case
return new TreeNode<T>(sorted[first], nullptr, nullptr);
TreeNode<T>* leftPtr = nullptr;
if (first != rootInd)
leftPtr = createBST(sorted, first, rootInd);
TreeNode<T>* rightPtr = nullptr;
if (rootInd + 1 != last)
rightPtr= createBST(sorted, rootInd + 1, last);
TreeNode<T>* res = new TreeNode<T>(sorted[rootInd], leftPtr, rightPtr);
if (leftPtr)
leftPtr->parent = res;
if (rightPtr)
rightPtr->parent = res;
return res;
}
int main ()
{
Node* root = createBST(std::vector<int>(2,3,4,5,6,7));
assert(validateBST(root));
return 0;
}
void ex_4_8() {
std::vector<int> in;
//seed48(2018);
for (int sample = 0; sample < 20180000; ++sample)
in.push_back(std::rand() % 200);
std::sort(in.begin(), in.end());
TreeNode<int>* node = createBST(in, 0, (int) in.size()) ;
auto root = node;
std::cout << "subtree " << (findSubtree(root, root->left) ? " exists " : " doesn't exist ") << std::endl;
}
void ex4_5() {
std::cout << "ex4.5 \n";
std::vector<int> in;
for (int sample = 0; sample < std::rand() % 10000; ++sample)
in.push_back(std::rand() % 20);
std::sort(in.begin(), in.end());
auto node = createBST(in, 0, (int) in.size()) ;
// std::cout << " sample size=" << in.size() << ", max height = " << height << ", log(size)=" << log2(in.size()) << std::endl;
std::cout << "is it a BST? " << checkBST(node);
}
//To add a new node to the tree
void createBST(node **r,int value)
{
//allocating memory and assigning value
if(*r==NULL)
{
*r=(node*)malloc(sizeof(node));
(*r)->data=value;
(*r)->left=NULL;
(*r)->right=NULL;
return;
}
else //comparing the value with the value in the node
{
if((*r)->data > value)
createBST(&(*r)->left,value);
else
createBST(&(*r)->right,value);
}
}
void ex4_3() {
std::cout << "ex4.3 \n";
for (int cases = 0; cases < 50; ++cases) {
std::vector<int> in;
for (int sample = 0; sample < std::rand() % 10000; ++sample)
in.push_back(std::rand() % 20);
std::sort(in.begin(), in.end());
auto node = createBST(in, 0, (int) in.size()) ;
auto height = getHeight(node) ;
std::cout << " sample size=" << in.size() << ", max height = " << height << ", log(size)=" << log2(in.size()) << std::endl;
}
}
int main(int argc, char **argv)
{
//Checking error
if (argc < 2)
{
printf("usage: %s <input_filename>\n", argv[0]);
return 0;
}
//Open file
FILE *in = fopen(argv[1], "r");
if (in == NULL) return 0;
//Declaration of variable
int i, size,level;
//Scanning size from file
fscanf(in, "%d", &size);
//allocating memory for array
int *array = malloc(size * sizeof(int));
//Scanning number from the file
for (i=0; i<size; i++)
fscanf(in, "%d", &array[i]);
//Declaring a node
bst *root =NULL;
//Creating BST
root=createBST(array,size);
//print in-order,pre-order,post-order tree traversal
printf("Creating Binary Search Tree...\n");
printf("In-order traversal: ");
printInorder(root);
printf("\n");
printf("Pre-order traversal: ");
printPreorder(root);
printf("\n");
printf("Post-order traversal: ");
printPostorder(root);
printf("\n");
//Sort arrat
sort(array,size);
//Creatin binary tree with minimum level
root=createMinBST(array,0,size-1);
//printing BST
printf("Minimum Height BST\n");
printTree(root);
//Bonus
printf("Bonus.Please enter level of the tree:");
scanf("%d",&level);
if(level>height(root))
printf("\nThe maximum height of this tree is %d",height(root));
else
printGivenLevel(root,level);
return 0;
}
int main(int argc, char *argv[]){
//check command line arguments
if(argc != 2){
printf("usage: ./a.out <input_filename>");
exit(0);
}
//open the file
FILE* input = fopen(argv[1],"r");
if(input == NULL){
printf("File not found");
exit(0);
}
bst* root = NULL;
int i = 0;
int size = 0;
fscanf(input,"%d",&size);
int *a = (int *)malloc(sizeof(int)*size);//create the array
for(i=0;i<size;i++){
fscanf(input,"%d",&a[i]);
}
close(input); //close file
//printout the different ways
printf("Creating Binary Search Tree\n");
root = createBST(a,size);
printf("In-Order traversal: ");
printInorder(root);
printf("\nPre-Order traversal: ");
printPreorder(root);
printf("\nPost-Order traversal: ");
printPostorder(root);
printf("\n\nMinimum Height BST\n");
sort(a,size);
root = createMinBST(a,0,size-1);
printTree(root);
free(a); //free mem
return 0;
}
TreeNode *sortedListToBST(ListNode *head) {
// Start typing your C/C++ solution below
// DO NOT write int main() function
//1. go the medium of the sortedlist, put
//create bst root based on this node
//2. create BST left using head to medium
//create BST right using medium+1 to end
//complexity O(nlogn );
if( head == NULL ) return NULL;
int len = getLength( head );
TreeNode *newNode = createBST( head, 0, len-1 );
return newNode;
}
int main(int argc, char **argv)
{
if(argc < 2)
{
printf("usage: %s <input_filename>/n", argv[0]);
return;
}
FILE* input = fopen(argv[1], "r");
if (input == NULL)
return;
int i, size;
fscanf(input, "%d", &size);
int array[size];
for(i=0; i<size; i++)
fscanf(input, "%d", &array[i]);
//Creates Binary Tree
printf("Creating Binary Tree...\n");
bst* root = createBST(array, size);
//Printing Inorder Traversal
printf("Inorder Traversal: ");
printInorder(root);
printf("\n");
//Printing Pre-order Traversal
printf("Pre-Order Traversal: ");
printPreorder(root);
printf("\n");
//Printing Postorder Traversal
printf("Postorder Traversal: ");
printPostorder(root);
printf("\n");
//Printing the Binary Tree
printf("\nMinimum Height BST\n");
sort(array, size);
root = createMinBST(array, array[0], array[size-1]);
printTree(root);
fclose(input);
free(root);
return 0;
}
void ex4_4() {
std::cout << "ex4.4 \n";
std::vector<int> in;
for (int sample = 0; sample < std::rand() % 10000; ++sample)
in.push_back(std::rand() % 20);
std::sort(in.begin(), in.end());
auto node = createBST(in, 0, (int) in.size()) ;
auto height = getHeight(node) ;
std::cout << " sample size=" << in.size() << ", max height = " << height << ", log(size)=" << log2(in.size()) << std::endl;
auto lists = createLists(node);
for (int depth = 0; depth < lists.size(); ++depth) {
std::cout << " level " << depth << ": ";
for (auto elem : lists[depth]) {
std::cout << elem->value << ", ";
}
std::cout << std::endl;
}
}
int main(){
printf("Creating a binary search tree\n");
struct BSTNode* root =NULL;
root = createBST(root);
struct BSTNode* prev = NULL;
struct BSTNode* temp=bst2dll(root,prev);
struct BSTNode* temp1;
while(temp!= NULL){
printf("%d\n",temp->value);
temp1 = temp;
temp = temp->left;
}
while(temp1!=NULL){
printf("%d\n",temp1->value);
temp1 = temp1->right;
}
return 0;
}
int main(void)
{
BST* contactBST; //NOT sure if these are right
char userInput;
int inputStatus;
int quitStatus = 0;
contactBST = createBST(compareWord);
readFileBST(contactBST);
while(quitStatus == 0){
inputStatus = 0;
while(inputStatus == 0){ //Looping until choice is entered correctly
fflush(stdin);
printf("Please select: (a) add, (d) delete, (l) lookup, or (q) quit: ");
scanf("%c",&userInput);
if(userInput == 'a' || userInput == 'd' || userInput == 'l' || userInput == 'q'){
inputStatus = 1;
}
}
printf("Choice: %c",userInput);
if(userInput == 'q'){ //User Quits
quitStatus = 1;
}
else{
if(userInput == 'a'){
addName(contactBST);
}
else if(userInput == 'd'){
//delete function here
}
else if(userInput == 'l'){
//look up function here
}
}
}
contactBST = destroyBST(contactBST); //Not sure of this
return 0;
}
void ex4_7() {
std::cout << "ex4.7 \n";
std::vector<int> in;
for (int sample = 0; sample < 10; ++sample)
in.push_back(std::rand() % 2000);
std::sort(in.begin(), in.end());
TreeNode<int>* node = createBST(in, 0, (int) in.size()) ;
auto root = node;
TreeNode<int>* rightmost = root;
std::cout << "root.value=" << root->value << ", node.value=" << node->value << ", rightmost.value=" << rightmost->value << std::endl;
rightmost = rightmost->right;
TreeNode<int>* oneToLeft = rightmost->left;
rightmost = rightmost->right;
auto next = getNextNode(rightmost);
std::cout << "next node of node " << rightmost->value << " is " << (next ? next->value : -1 ) << std::endl; // std::cout << " sample size=" << in.size() << ", max height = " << height << ", log(size)=" << log2(in.size()) << std::endl;
//std::cout << "is it a BST? " << checkBST(node);
auto lists = createLists(node);
for (int depth = 0; depth < lists.size(); ++depth) {
std::cout << " level " << depth << ": ";
for (auto elem : lists[depth]) {
std::cout << elem->value << ", ";
}
std::cout << std::endl;
}
//auto common = firstCommonAncestor(rightmost, oneToLeft);
bool coversA = false; bool coversB = false;
auto common = commonAncestorDescendRec(root, rightmost, oneToLeft, coversA, coversB);
assert(common->value == 1709);
coversA = false; coversB = false;
// common = firstCommonAncestor(root, rightmost);
common = commonAncestorDescendRec(root, root, rightmost, coversA, coversB);
assert(common == nullptr);
std::cout << "common ancestor = " << (common ? common->value : 0) << std::endl;
}
int main(void){
contactData* dataList[MAX];
BST* contactBST; //NOT sure if these are right
char userInput;
int inputStatus;
int quitStatus = 0;
contactBST = createBST(compareWord);
readFileBST(dataList,contactBST);
while(quitStatus = 0){
inputStatus = 0;
while(inputStatus == 0){ //Looping until choice is entered correctly
printf("Please select from the following: (a) add, (d) delete, (l) lookup, or (q) quit:");
scanf("%c",userInput);
if(userInput == 'a' || userInput == 'd' || userInput == 'l' || userInput == 'q');
inputStatus = 1;
}
if(userInput == 'q'){ //User Quits
quitStatus = 1;
}
else{
if(userInput == 'a'){
//add function here
}
else if(userInput == 'd'){
//delete function here
}
else if(userInput == 'l'){
//look up function here
}
}
}
contactBST = destroyBST(contactBST); //Not sure of this
return 0;
}
int main()
{
int arr[] = {10,3,5,2,9,100};
int i, len, key;
TreePointer bst, ret;
len = arr_length(arr,int);
//create tree using ADT
bst = createBST(arr[0]);
for(i=1; i < len ; i ++)
insert(bst,arr[i]);
key = 2;
ret = BSTsearch(bst,key);
assert(ret!=NULL);
assert(key==getBSTData(ret));
//print all by order
printSorted(bst);
return 0;
}
int main()
{
node *root=NULL;
int n;
int num,i,value;
while(1)
{
system("cls");
printf("1. Create Binary Search Tree\n"
"2. Delete a node\n"
"3. inOrder Display\n"
"4. Exit\n"
"Enter Your Choice:- ");
scanf("%d",&n);
switch (n)
{
case 1:
system("cls");
printf("Enter the number of nodes you want to add: ");
scanf("%d",&num);
for(i=0;i<num;i++)
{
printf("Enter the data for the %d node: ",i+1);
scanf("%d",&value);
createBST(&root,value);
}
printf("%d Nodes Added\n",num);
getch();
break;
case 2:
system("cls");
printf("Enter the data of the node you want to Delete: ");
scanf("%d",&value);
del(&root,value);
getch();
break;
case 3:
system("cls");
if(root==NULL)
printf("Empty Tree\n");
else
inOrder(root);
getch();
break;
case 4:
system("cls");
exit(0);
default:
system("cls");
printf("\nWrong Selection");
getch();
}
}
return 0;
}
//===================================================================
// Reads in the data from a file and inserts into BST and hashed
// array.
//===================================================================
void readInFile(DATA_HEAD *data) {
FILE *dataFile;
COMPANY *companyNode;
char filename[MAX_CHARS], tmpName[MAX_CHARS];
char ch;
int tmpRev, tmpProfit, tmpNumEmployee;
int i = 0, isDuplicate, len, size;
do {
printf("Please enter a filename [enter for default]:");
fgets(filename, MAX_CHARS, stdin);
if (filename[0] == '\n')
strcpy(filename, default_file);
else {
//flush new line
len = strlen(filename);
if (filename[len - 1] == '\n' || filename[len - 1] == '\r')
filename[len - 1] = '\0'; // change '\n' to '\0'
else // no '\n' read, so flush to '\n'
while ((ch = getchar()) != '\n' && ch != '\r');
}
dataFile = fopen(filename, "r");
} while(!dataFile);
//Creates structures
data->pTree = createBST(myStringCompare);
data->pStack = createStack();
size = getArrSize(dataFile);
//need to reopen connection
dataFile = fopen(filename, "r");
data->arraySize = size;
data->count = 0;
data->pHash = (HASH *)malloc(sizeof(DATA_HEAD) *data->arraySize);
//initialize hashed array
for (i = 0; i < data->arraySize; i++) {
data->pHash[i].status = 0;
data->pHash[i].numOfCollisions = 0;
data->pHash[i].numOfProbes = 0;
data->pHash[i].hashData = NULL;
}
//Reads in, parses, mallocs, assigns
while (fscanf(dataFile, " %[^,],%d,%d,%d[^\n]", tmpName, &tmpRev, &tmpProfit, &tmpNumEmployee) != EOF)
{
companyNode = (COMPANY *)malloc(sizeof(COMPANY));
//Checks to see if allocated properly
if (!companyNode)
exit(1);
companyNode->companyName = (char *)malloc(strlen(tmpName) + 1);
//Checks to see if allocated properly
if (!(companyNode->companyName))
exit(1);
strcpy(companyNode->companyName, tmpName);
companyNode->numberOfEmployees = tmpNumEmployee;
companyNode->revenuePerBillion = tmpRev;
companyNode->profitPerMillion = tmpProfit;
//Inserts company data (name, revenue, profit, employees) into the BST
//If duplicate, print an error
isDuplicate = searchHash(data, tmpName, companyNode);
if (isDuplicate == 1)
printf("ERROR: DUPLICATE DATA\n");
else
{
insertHash(data, companyNode);
insertBST(data->pTree, companyNode);
data->count++;
}
}
printf("\nNumber Of Data Records read in: %d\n\n", data->count);
fclose(dataFile);
}
void setup(){
tree = createBST(compare);
}
