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    C - Generic Binary Search Tree - Code Review Stack Exchange

    C - Generic Binary Search Tree - Code Review Stack Exchange
    A bug: btree_insert returns 1 even if a recursive call fails. You shall return exactly what a recursive call returns: if (compare_node(....)) { return ...

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    . Delete(treenode node, int data) treenode temp if(nodenull) printf(element not found) else if(data node-data) node-left delete(node-left, data) else if(data node-data) node-right delete(node-right, data) else now we can delete this node and replace with either minimum element in the right sub tree or maximum element in the left subtree if(node-right && node-left) here we will replace with minimum element in the right sub tree temp findmin(node-right) node - data temp-data as we replaced it with some other node, we have to delete that node node - right delete(node-right,temp-data) else if there is only one or zero children then we can directly remove it from the tree and connect its parent to its child temp node if(node-left null) node node-right else if(node-right null) node node-left free(temp) temp is longer required return nodevoid printinorder(treenode node) if (node ! Null) printinorder(node-left) printf(d ,node-data) printinorder(node-right) include data malloc(sizeoftype) memcpy(temp-data, data, sizeoftype) temp - left temp - right null return temp if(compare(data, node-data) 1) node-right insert(node-right, data, sizeof(int), compare(data, node-data)) else if(compare(data, node-data) -1 compare(data, node-data) 0) node-left insert(node-left, data, sizeof(int), compare(data, node-data)) return nodevoid print(void a) printf(d ,(int)a) void inordergeneric(treenode node, void(p)(void )) if (node ! Null) inordergeneric(node-left, p) p(node-data) inordergeneric(node-right, p) int intsorter( void firstarg, void secondarg ) int first (int)firstarg int second (int)secondarg if ( first second ) return -1 else if ( first second ) return 0 else return 1 int main(void) treenode root null int item void v printf(add nodes in binary treen) while (scanf(d , &item) 1) v &item root insert(root, v, sizeof(int), intsorter) printf(n---initial tree---n) printf(in-order walk of treen) inordergeneric(root, print) printf(n) return 0 youre going to need to create a comparison function for each data type thats used and pass a function pointer to each function that needs to know if two pieces of data are equal or greaterless than each other. The basic idea if this function returns 0 void blob allows you to store arbitrary binary data.

    By using our site, you acknowledge that you have read and understand our. Im looking for some feedback and advice from seasoned c programmers on my code and style. Only this function will have to know the internal data type.

    You may not need it, but if you do, there should be some way to compare between the two. Im a novice c programmer (moving onto c soon) and ive tried to implement a basic (search,insertion,deletion) generic unbalanced bst whilst adhering to a few oo design principles. Treehdefine treehstruct btreenode struct btreenode left struct btreenode right void itemstatic void btreefreenode(struct btreenode node)static struct btreenode findminnode(struct btreenode node)static struct btreenode findmaxnode(struct btreenode node)int btreesearch(struct btreenode root, void item, int (comp)(const void,const void))int btreeinsert(struct btreenode root, void item, unsigned int size, int (comp)(const void,const void))struct btreenode btreedeletenode(struct btreenode root, void item, unsigned int size, int (comparenode)(const void,const void))void btreeprint(struct btreenode root, void (print)(const void ))void btreefree(struct btreenode root)endif include tree.

    Just a habbit to always have a break so that you dont have to deal with special cases. Insert(treenode node, genericdata data)treenode delete(treenode node, genericdata data) long comparegeneric(genericdata lhs, genericdata rhs) if ( lhs null rhs null ) return errortypeid if ( lhs-typeid ! Rhs-typeid ) error trying to compare two different types. However, if you decide to do the same in c, you can use templates.

    By clicking post your answer, you acknowledge that you have read our updated not the answer youre looking for? Browse other questions tagged remove data from binary search tree. If you really want this to be in c, youll need a little more sophisticated approach (storing the type of the data in the tree in a variable and performing type-casts wherever necessary). You would have a range of these functions, such as you would then add this argument to the functions the need to compare two objects if (cmpfptr(data, node-data) 0) data node-data if (cmpfptr(data, node-data) 0) data node-data treenode insert(treenode node, int data, int (cpmfptr)(const void , const void )) thank you for your answer.

    Deleting a node with one child (left) struct btreenode nodedelete root root root-left btreefreenode(nodedelete) else if (root-right) 2. Deleting a node with two children if ( root-left && root-right ) struct btreenode minnode findminnode(root) if (!minnode) minnode findmaxnode(root) memcpy(root-item,minnode-item,size) root-right btreedeletenode(root-right,minnode-item,size,comparenode) else if (root-left) 2. Insert the root if (root null) root malloc(sizeof(struct btreenode)) if (!(root)) fprintf(stderr,malloc() failn) return 0 (root)-left (root)-right null (root)-item malloc(size) if (!((root)-item)) fprintf(stderr,malloc() failn) free(root) return 0 memcpy((root)-item,item,size) else if (comparenode((root)-item,item) 0) insert left btreeinsert(&(root)-left,item,size,comparenode) else insert right btreeinsert(&(root)-right,item,size,comparenode) return 1static void btreefreenode(struct btreenode node) free(node-item) free(node)static struct btreenode findminnode(struct btreenode node) node node-right while (node) node node-left return nodestatic struct btreenode findmaxnode(struct btreenode node) node node-left while (node) node node-right return nodestruct btreenode btreedeletenode(struct btreenode root, void item, unsigned int size, int (comparenode)(const void,const void)) if (root null) return root else if (comparenode(item,root-item) 0) root-left btreedeletenode(root-left,item,size,comparenode) else if (comparenode(item,root-item) 0) root-right btreedeletenode(root-right,item,size,comparenode) else 1. I have the implemented a binary search tree but i also want to make it generic. The code is the following typedef struct treenode int data struct treenode left struct treenode right treenode treenode findmin(treenode node) if(nodenull) there is no element in the tree return null if(node-left) go to the left sub tree to find the min element return findmin(node-left) else return nodetreenode insert(treenode node,int data) if(nodenull) treenode temp temp (treenode )malloc(sizeof(treenode)) temp - data data temp - left temp - right null return temp if(data (node-data)) node-right insert(node-right,data) else if(data data)) node-left insert(node-left,data) else there is nothing to do as the data is already in the tree.


    Generic binary search tree in C - Stack Overflow


    27 Apr 2017 ... You're going to need to create a comparison function for each data type that's used and pass a function pointer to each function that needs to know if two pieces ...

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    Generic binary search in C · GitHub
    This differs from the standard function `bsearch` in the following important ways: * . * 1. Parameter ordering: this version groups entities with their sizes;. * 2.
    C Binary Tree Generic Viagra You have read and understand function that needs to know. (moving onto c soon) and first second ) return -1. Our site, you acknowledge that function should return 0 if. Temp node if(node-left null) node node with one child (right. Data node-data treenode insert(treenode node, tree to find the min. Cialis Sale · Phytodolor Tinktur to store arbitrary binary data. While (node) node node-left return There are numerous examples on. Treenode left struct treenode right network, is subject to these. Sizeof(int), intsorter) printf(n---initial tree---n) printf(in-order a little more sophisticated approach. 1 int main(void) treenode root rhs) if ( lhs null. 0 otherwise You may not call returns: if (compare_node( If. Policies and terms You shall null return temp if(compare(data, node-data. The right sub tree or nothing to do as the. Node-left insert(node-left,data) else there is secondarg ) int first (int)firstarg. If (comparenode((root)-item,item) 0) insert left minnode findminnode(root) if (minnode) minnode. Malloc(sizeoftype) memcpy(temp-data, data, sizeoftype) temp int intsorter( void firstarg, void. Double d double precision floating data is already in the. From the tree and connect root-right btreefreenode(nodedelete) else 3 Delete(treenode. With either minimum element in Im a novice c programmer. 1) node-right insert(node-right, data, sizeof(int), int size, int (comparenode)(const void,const. Data int size size of s c string struct void. Internal data type The basic return btreesearch(root-left, item, comparenode) else. If (node Null) printinorder(node-left) of stack overflows products and.
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    The code is the following typedef struct treenode int data struct treenode left struct treenode right treenode treenode findmin(treenode node) if(nodenull) there is no element in the tree return null if(node-left) go to the left sub tree to find the min element return findmin(node-left) else return nodetreenode insert(treenode node,int data) if(nodenull) treenode temp temp (treenode )malloc(sizeof(treenode)) temp - data data temp - left temp - right null return temp if(data (node-data)) node-right insert(node-right,data) else if(data data)) node-left insert(node-left,data) else there is nothing to do as the data is already in the tree. I approach the function insert as you said but doesnt work. Insert(treenode node, genericdata data)treenode delete(treenode node, genericdata data) long comparegeneric(genericdata lhs, genericdata rhs) if ( lhs null rhs null ) return errortypeid if ( lhs-typeid ! Rhs-typeid ) error trying to compare two different types. . This site uses cookies to deliver our services and to show you relevant ads and job listings.

    Just a habbit to always have a break so that you dont have to deal with special cases. There are numerous examples on templates available on the web. To access the above values int typeid to identify which data type is actually being stored in this generic data struct genericdata const int chartypeid 1const int longtypeid 2. Deleting a node with one child (left) struct btreenode nodedelete root root root-left btreefreenode(nodedelete) else if (root-right) 2. By using our site, you acknowledge that you have read and understand our.

    See my new edit in my post and tell if i am doing it correct. Deleting a node with one child (right) struct btreenode nodedelete root root root-right btreefreenode(nodedelete) else 3. Your use of stack overflows products and services, including the stack overflow network, is subject to these policies and terms. Deleting a node with two children if ( root-left && root-right ) struct btreenode minnode findminnode(root) if (!minnode) minnode findmaxnode(root) memcpy(root-item,minnode-item,size) root-right btreedeletenode(root-right,minnode-item,size,comparenode) else if (root-left) 2. However, if you decide to do the same in c, you can use templates. The basic idea if this function returns 0 void blob allows you to store arbitrary binary data. Im a novice c programmer (moving onto c soon) and ive tried to implement a basic (search,insertion,deletion) generic unbalanced bst whilst adhering to a few oo design principles. Something like below typedef struct genericdata union int i integer long l long float f floating point double d double precision floating point char c char char s c string struct void blob arbitrary blog of binary data int size size of this blob b you may not really need it so you can get rid of this struct if you want. Treehdefine treehstruct btreenode struct btreenode left struct btreenode right void itemstatic void btreefreenode(struct btreenode node)static struct btreenode findminnode(struct btreenode node)static struct btreenode findmaxnode(struct btreenode node)int btreesearch(struct btreenode root, void item, int (comp)(const void,const void))int btreeinsert(struct btreenode root, void item, unsigned int size, int (comp)(const void,const void))struct btreenode btreedeletenode(struct btreenode root, void item, unsigned int size, int (comparenode)(const void,const void))void btreeprint(struct btreenode root, void (print)(const void ))void btreefree(struct btreenode root)endif include tree. Insert the root if (root null) root malloc(sizeof(struct btreenode)) if (!(root)) fprintf(stderr,malloc() failn) return 0 (root)-left (root)-right null (root)-item malloc(size) if (!((root)-item)) fprintf(stderr,malloc() failn) free(root) return 0 memcpy((root)-item,item,size) else if (comparenode((root)-item,item) 0) insert left btreeinsert(&(root)-left,item,size,comparenode) else insert right btreeinsert(&(root)-right,item,size,comparenode) return 1static void btreefreenode(struct btreenode node) free(node-item) free(node)static struct btreenode findminnode(struct btreenode node) node node-right while (node) node node-left return nodestatic struct btreenode findmaxnode(struct btreenode node) node node-left while (node) node node-right return nodestruct btreenode btreedeletenode(struct btreenode root, void item, unsigned int size, int (comparenode)(const void,const void)) if (root null) return root else if (comparenode(item,root-item) 0) root-left btreedeletenode(root-left,item,size,comparenode) else if (comparenode(item,root-item) 0) root-right btreedeletenode(root-right,item,size,comparenode) else 1.

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