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2019년 1월 17일 목요일

binary search tree

  1월 17, 2019    

"binarysearchtree.h"
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#ifndef _BINARY_SEARCH_TREE_
#define _BINARY_SEARCH_TREE_
 
struct Binary_Search_Tree_Node_Type {
 
    int key;
    char value;
 
    struct Binary_Search_Tree_Node_Type* Pointer_Left_Child;
    struct Binary_Search_Tree_Node_Type* Pointer_Right_Child;
};
 
struct Binary_Search_Tree_Type {
 
    struct Binary_Search_Tree_Node_Type* Pointer_Root_Node;
};
 
typedef struct Binary_Search_Tree_Node_Type        Binary_Search_Tree_Node;
typedef struct Binary_Search_Tree_Type            Binary_Search_Tree;
 
Binary_Search_Tree* Create_Binary_Search_Tree(void);
int Insert_Element_Binary_Search_Tree(Binary_Search_Tree* Pointer_Search_Tree, Binary_Search_Tree_Node element);
int Delete_Element_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, int key);
 
Binary_Search_Tree_Node* Search_Recursive_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, int key);
Binary_Search_Tree_Node* Search_Internal_Recursive_Binary_Search_Tree(Binary_Search_Tree_Node* Pointer_Tree_Node, int key);
Binary_Search_Tree_Node* Search_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, int key);
 
void Delete_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree);
void Delete_Binary_Search_Tree_Internal(Binary_Search_Tree_Node* Pointer_Tree_Node);
 
#endif // !_BINARY_SEARCH_TREE_
 
#ifndef _COMMON_TREE_DEFAULT_
#define _COMMON_TREE_DEFAULT_
 
#define TRUE    1
#define FALSE    0
 
#endif // !_COMMON_TREE_DEFAULT_
 
 
cs
"binarysearchtree.c"
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#include <stdio.h>
#include <stdlib.h>
#include "binarysearchtree.h"
 
Binary_Search_Tree* Create_Binary_Search_Tree(void) {
 
    Binary_Search_Tree* Pointer_Return = (Binary_Search_Tree*)malloc(1 * sizeof(Binary_Search_Tree));
    if ((Binary_Search_Tree*)Pointer_Return == NULL) {
 
        printf("Error! Dynamic memory allocation. Create_Search_Tree()\n");
        return NULL;
    }
    (struct Binary_Search_Tree_Node_Type*)Pointer_Return->Pointer_Root_Node = NULL;
    return (Binary_Search_Tree*)Pointer_Return;
}
 
int Insert_Element_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, Binary_Search_Tree_Node element) {
 
    if ((Binary_Search_Tree*)Pointer_Binary_Search_Tree == NULL) return FALSE;
 
    Binary_Search_Tree_Node* Pointer_Parent_Node = (Binary_Search_Tree_Node*)Pointer_Binary_Search_Tree->Pointer_Root_Node;
    while ((Binary_Search_Tree_Node*)Pointer_Parent_Node != NULL) {
 
        if (element.key == Pointer_Parent_Node->key) {
 
            printf("Error! Duplicate key-[%d], Insert_Element_Binary_Search_Tree()\n", element.key);
            return FALSE;
        }
        else if ((element.key < Pointer_Parent_Node->key) && ((struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child != NULL)) {
 
            (Binary_Search_Tree_Node*)Pointer_Parent_Node = (Binary_Search_Tree_Node*)Pointer_Parent_Node->Pointer_Left_Child;
        }
        else if ((element.key > Pointer_Parent_Node->key) && ((struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Right_Child != NULL)) {
 
            (Binary_Search_Tree_Node*)Pointer_Parent_Node = (Binary_Search_Tree_Node*)Pointer_Parent_Node->Pointer_Right_Child;
        }
        else break;
    }
 
    Binary_Search_Tree_Node* Pointer_New_Node = (Binary_Search_Tree_Node*)malloc(1 * sizeof(Binary_Search_Tree_Node));
    if ((Binary_Search_Tree_Node*)Pointer_New_Node == NULL) {
 
        printf("Error! Dynamic memory allocation. Insert_Element_Binary_Search_Tree()\n");
        return FALSE;
    }
 
    *(Binary_Search_Tree_Node*)Pointer_New_Node = *(Binary_Search_Tree_Node*)&element;
    (struct Binary_Search_Tree_Node_Type*)Pointer_New_Node->Pointer_Left_Child = NULL;
    (struct Binary_Search_Tree_Node_Type*)Pointer_New_Node->Pointer_Right_Child = NULL;
 
    if ((Binary_Search_Tree_Node*)Pointer_Parent_Node == NULL) {
 
        (struct Binary_Search_Tree_Node_Type*)Pointer_Binary_Search_Tree->Pointer_Root_Node = (struct Binary_Search_Tree_Node_Type*)Pointer_New_Node;
    }
    else if (Pointer_New_Node->key < Pointer_Parent_Node->key) {
 
        (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_New_Node;
    }
    else (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Right_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_New_Node;
 
    return TRUE;
}
 
int Delete_Element_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, int key) {
 
    if ((Binary_Search_Tree*)Pointer_Binary_Search_Tree == NULL) return FALSE;
 
    Binary_Search_Tree_Node* Pointer_Parent_Node = NULL;
    Binary_Search_Tree_Node* Pointer_Delete_Node = (Binary_Search_Tree_Node*)Pointer_Binary_Search_Tree->Pointer_Root_Node;
    while ((Binary_Search_Tree_Node*)Pointer_Delete_Node != NULL) {
 
        if (key == Pointer_Delete_Node->key) break;
 
        (Binary_Search_Tree_Node*)Pointer_Parent_Node = (Binary_Search_Tree_Node*)Pointer_Delete_Node;
        if (key < Pointer_Delete_Node->key)
            (Binary_Search_Tree_Node*)Pointer_Delete_Node = (Binary_Search_Tree_Node*)Pointer_Delete_Node->Pointer_Left_Child;
        else (Binary_Search_Tree_Node*)Pointer_Delete_Node = (Binary_Search_Tree_Node*)Pointer_Delete_Node->Pointer_Right_Child;
    }
    if ((Binary_Search_Tree_Node*)Pointer_Delete_Node == NULL) {
 
        printf("Error! Duplicate key-[%d], Delete_Element_Binary_Search_Tree()\n", key);
        return FALSE;
    }
    if ((struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Left_Child == NULL && (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Right_Child == NULL) {
 
        if ((Binary_Search_Tree_Node*)Pointer_Parent_Node == NULL) (struct Binary_Search_Tree_Node_Type*)Pointer_Binary_Search_Tree->Pointer_Root_Node = NULL;
        else if ((struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child == (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node) {
 
            (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child = NULL;
        }
        else (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Right_Child = NULL;
        free((Binary_Search_Tree_Node*)Pointer_Delete_Node);
        return TRUE;
    }
    else if ((struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Left_Child != NULL && (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Right_Child != NULL) {
 
        Binary_Search_Tree_Node* Pointer_Predecessor = (Binary_Search_Tree_Node*)Pointer_Delete_Node;
        Binary_Search_Tree_Node* Pointer_Successor = (Binary_Search_Tree_Node*)Pointer_Delete_Node->Pointer_Left_Child;
 
        while ((Binary_Search_Tree_Node*)Pointer_Successor->Pointer_Right_Child != NULL) {
 
            (Binary_Search_Tree_Node*)Pointer_Predecessor = (Binary_Search_Tree_Node*)Pointer_Successor;
            (Binary_Search_Tree_Node*)Pointer_Successor = (Binary_Search_Tree_Node*)Pointer_Successor->Pointer_Right_Child;
        }
 
        (struct Binary_Search_Tree_Node_Type*)Pointer_Predecessor->Pointer_Right_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Successor->Pointer_Left_Child;
        (struct Binary_Search_Tree_Node_Type*)Pointer_Successor->Pointer_Left_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Left_Child;
        (struct Binary_Search_Tree_Node_Type*)Pointer_Successor->Pointer_Right_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Right_Child;
 
        if ((Binary_Search_Tree_Node*)Pointer_Parent_Node == NULL) {
 
            (struct Binary_Search_Tree_Node_Type*)Pointer_Binary_Search_Tree->Pointer_Root_Node = (struct Binary_Search_Tree_Node_Type*)Pointer_Successor;
        }
        else if ((struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child == (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node) {
 
            (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Successor;
        }
        else (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Right_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Successor;
        free((Binary_Search_Tree_Node*)Pointer_Delete_Node);
        return TRUE;
    }
 
    Binary_Search_Tree_Node* Pointer_Child_Node = NULL;
 
    if ((struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node->Pointer_Left_Child == NULL) {
 
        (Binary_Search_Tree_Node*)Pointer_Child_Node = (Binary_Search_Tree_Node*)Pointer_Delete_Node->Pointer_Left_Child;
    }
    else (Binary_Search_Tree_Node*)Pointer_Child_Node = (Binary_Search_Tree_Node*)Pointer_Delete_Node->Pointer_Right_Child;
 
    if ((Binary_Search_Tree_Node*)Pointer_Parent_Node == NULL) {
 
        (struct Binary_Search_Tree_Node_Type*)Pointer_Binary_Search_Tree->Pointer_Root_Node = (struct Binary_Search_Tree_Node_Type*)Pointer_Child_Node;
    }
    else if ((struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Delete_Node) {
 
        (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Left_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Child_Node;
    }
    else (struct Binary_Search_Tree_Node_Type*)Pointer_Parent_Node->Pointer_Right_Child = (struct Binary_Search_Tree_Node_Type*)Pointer_Child_Node;
    free((Binary_Search_Tree_Node*)Pointer_Delete_Node);
    return TRUE;
}
 
Binary_Search_Tree_Node* Search_Recursive_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, int key) {
 
    if ((Binary_Search_Tree*)Pointer_Binary_Search_Tree == NULL) return NULL;
    return (Binary_Search_Tree_Node*)Search_Internal_Recursive_Binary_Search_Tree((Binary_Search_Tree_Node*)Pointer_Binary_Search_Tree->Pointer_Root_Node, key);
}
 
Binary_Search_Tree_Node* Search_Internal_Recursive_Binary_Search_Tree(Binary_Search_Tree_Node* Pointer_Tree_Node, int key) {
 
    if ((Binary_Search_Tree_Node*)Pointer_Tree_Node == NULL) return NULL;
    else if (key == Pointer_Tree_Node->key) return (Binary_Search_Tree_Node*)Pointer_Tree_Node;
    else if (key < Pointer_Tree_Node->key) return Search_Internal_Recursive_Binary_Search_Tree((Binary_Search_Tree_Node*)Pointer_Tree_Node->Pointer_Left_Child, key);
    return Search_Internal_Recursive_Binary_Search_Tree((Binary_Search_Tree_Node*)Pointer_Tree_Node->Pointer_Right_Child, key);
}
 
Binary_Search_Tree_Node* Search_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree, int key) {
 
    if ((Binary_Search_Tree*)Pointer_Binary_Search_Tree == NULL) return NULL;
 
    Binary_Search_Tree_Node* Pointer_Return = (Binary_Search_Tree_Node*)Pointer_Binary_Search_Tree->Pointer_Root_Node;
    while ((Binary_Search_Tree_Node*)Pointer_Return != NULL && key != Pointer_Return->key) {
 
        if (key < Pointer_Return->key) (Binary_Search_Tree_Node*)Pointer_Return = (Binary_Search_Tree_Node*)Pointer_Return->Pointer_Left_Child;
        else (Binary_Search_Tree_Node*)Pointer_Return = (Binary_Search_Tree_Node*)Pointer_Return->Pointer_Right_Child;
    }
    return (Binary_Search_Tree_Node*)Pointer_Return;
}
 
void Delete_Binary_Search_Tree(Binary_Search_Tree* Pointer_Binary_Search_Tree) {
 
    if ((Binary_Search_Tree*)Pointer_Binary_Search_Tree == NULL) return;
    Delete_Binary_Search_Tree_Internal((Binary_Search_Tree_Node*)Pointer_Binary_Search_Tree->Pointer_Root_Node);
    free((Binary_Search_Tree*)Pointer_Binary_Search_Tree);
    return;
}
 
void Delete_Binary_Search_Tree_Internal(Binary_Search_Tree_Node* Pointer_Tree_Node) {
 
    if ((Binary_Search_Tree_Node*)Pointer_Tree_Node == NULL) return;
    Delete_Binary_Search_Tree_Internal((Binary_Search_Tree_Node*)Pointer_Tree_Node->Pointer_Left_Child);
    Delete_Binary_Search_Tree_Internal((Binary_Search_Tree_Node*)Pointer_Tree_Node->Pointer_Right_Child);
    free((Binary_Search_Tree_Node*)Pointer_Tree_Node);
    return;
}
cs
"main.c"
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#include <stdio.h>
#include <stdlib.h>
#include "binarysearchtree.h"
 
void Display_Binary_Search_Tree_Internal(Binary_Search_Tree_Node* Pointer_Tree_Node, int level, char type);
 
int main(int argc, char** argv) {
 
    Binary_Search_Tree_Node element[10] = { 0, };
    int index = 0;
    for (index = 0; index < 10; index++) {
 
        element[index].value = (int)'A' + index;
    }
    element[0].key = 30;
    element[1].key = 20;
    element[2].key = 40;
    element[3].key = 10;
    element[4].key = 24;
    element[5].key = 34;
    element[6].key = 46;
    element[7].key = 6;
    element[8].key = 14;
    element[9].key = 22;
 
    Binary_Search_Tree* Pointer_Tree = (Binary_Search_Tree*)Create_Binary_Search_Tree();
    if ((Binary_Search_Tree*)Pointer_Tree == NULL) return -1;
 
    for (index = 0; index < 10; index++) {
 
        Insert_Element_Binary_Search_Tree((Binary_Search_Tree*)Pointer_Tree, element[index]);
    }
    Display_Binary_Search_Tree_Internal((struct Binary_Search_Tree_Node_Type*)Pointer_Tree->Pointer_Root_Node, 0, 'R');
 
    int key = 14;
    Binary_Search_Tree_Node* Pointer_Search_Node = (Binary_Search_Tree_Node*)Search_Binary_Search_Tree((Binary_Search_Tree*) Pointer_Tree, key);
    if ((Binary_Search_Tree_Node*)Pointer_Search_Node == NULL) {
 
        printf("Search : Key-[%d], No targets found :(\n", key);
    }
    else printf("Search : Key-[%d], result-[%c]\n", key, Pointer_Search_Node->value);
 
    key = 30;
    printf("Delete Data : Key-[%d]\n", key);
    Delete_Element_Binary_Search_Tree((Binary_Search_Tree*)Pointer_Tree, key);
    Display_Binary_Search_Tree_Internal((struct Binary_Search_Tree_Node_Type*)Pointer_Tree->Pointer_Root_Node, 0, 'R');
 
    (Binary_Search_Tree_Node*) Pointer_Search_Node = (Binary_Search_Tree_Node*)Search_Binary_Search_Tree((Binary_Search_Tree*)Pointer_Tree, key);
    if ((Binary_Search_Tree_Node*)Pointer_Search_Node == NULL) {
 
        printf("Search : Key-[%d], No targets found :(\n", key);
    }
    else printf("Search : Key-[%d], result-[%c]\n", key, Pointer_Search_Node->value);
 
    Delete_Binary_Search_Tree((Binary_Search_Tree*)Pointer_Tree);
 
    return 0;
}
 
void Display_Binary_Search_Tree_Internal(Binary_Search_Tree_Node* Pointer_Tree_Node, int level, char type) {
 
    int loop = 0;
    for (loop = 0; loop < level; loop++) printf("    ");
    if ((Binary_Search_Tree_Node*)Pointer_Tree_Node == NULL) {
 
        printf("NULL\n");
        return;
    }
    printf("-[%i,%c]%i-%c\n", level, type, Pointer_Tree_Node->key, Pointer_Tree_Node->value);
    Display_Binary_Search_Tree_Internal((Binary_Search_Tree_Node*)Pointer_Tree_Node->Pointer_Left_Child, level + 1, 'L');
    Display_Binary_Search_Tree_Internal((Binary_Search_Tree_Node*)Pointer_Tree_Node->Pointer_Right_Child, level + 1, 'R');
    return;
}
cs

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