Working on binary trees

README.md

@@ -1,2 +1,2 @@
-# BLT
+# blt
 A common utilties library for my future creations

include/blt/profiling/profiler.h

@@ -10,10 +10,11 @@
 #include <string>
 #include <string_view>
 #include <mutex>
-#include <queue>
+#include <vector>
 #include <blt/std/time.h>
+#include <blt/std/queue.h>
 
-namespace BLT {
+namespace blt {
     struct CapturePoint {
         std::string_view name;
         long point;
@@ -34,9 +35,9 @@ namespace BLT {
             HASHMAP_TYPE<std::string_view, CaptureInterval> intervals{};
             
             // profiling points
-            std::vector<std::queue<CapturePoint>> cyclicPointsHistory{};
+            std::vector<blt::flat_queue<CapturePoint>> cyclicPointsHistory{};
-            std::queue<CapturePoint> points{};
+            blt::flat_queue<CapturePoint> points{};
-            std::queue<CapturePoint> cyclicPoints{};
+            blt::flat_queue<CapturePoint> cyclicPoints{};
             
             std::mutex timerLock{};
         public:

include/blt/std/binary_tree.h

@@ -0,0 +1,146 @@
+/*
+ * Created by Brett on 09/01/23.
+ * Licensed under GNU General Public License V3.0
+ * See LICENSE file for license detail
+ */
+
+#include <stdexcept>
+#include <vector>
+#include <blt/std/queue.h>
+
+#ifndef BLT_BINARY_TREE_H
+#define BLT_BINARY_TREE_H
+
+namespace blt {
+    
+    class binary_search_tree_error : public std::runtime_error {
+        public:
+            explicit binary_search_tree_error(const std::string& string): runtime_error(string) {}
+    };
+    
+    template<typename T>
+    class node_binary_search_tree {
+        protected:
+            struct BST_node {
+                BST_node* left = nullptr;
+                BST_node* right = nullptr;
+                T payload;
+                
+                ~BST_node() {
+                    delete (left);
+                    delete (right);
+                }
+            };
+            
+            BST_node* m_root = nullptr;
+        private:
+            void insert(BST_node* root, const T& element) {
+                BST_node* searchNode = root;
+                // basically we are iterating through the tree looking for a valid node to insert into.
+                while (true) {
+                    // check for left and right tree traversal if it exists
+                    if (searchNode->left != nullptr && element < searchNode->left->payload) {
+                        searchNode = searchNode->left;
+                        continue;
+                    }
+                    if (searchNode->right != nullptr && element > searchNode->right->payload) {
+                        searchNode = searchNode->right;
+                        continue;
+                    }
+                    if (element == searchNode->payload)
+                        throw binary_search_tree_error{"Unable to insert. Nodes cannot have equal values!\n"};
+                    // insert into the lowest node consistent with a BST
+                    if (element < searchNode->payload) {
+                        searchNode->left = new BST_node();
+                        searchNode->left->payload = element;
+                    } else {
+                        searchNode->right = new BST_node();
+                        searchNode->right->payload = element;
+                    }
+                    return;
+                }
+            }
+            
+            BST_node* search(BST_node*& parent, const T& element) {
+                BST_node* searchNode = m_root;
+                // basically we are iterating through the tree looking for a valid node to insert into.
+                while (true) {
+                    if (searchNode->payload == element)
+                        return searchNode->payload;
+                    // check for left and right tree traversal if it exists
+                    if (searchNode->left != nullptr && element < searchNode->left->payload) {
+                        parent = searchNode;
+                        searchNode = searchNode->left;
+                        continue;
+                    }
+                    if (searchNode->right != nullptr && element > searchNode->right->payload) {
+                        parent = searchNode;
+                        searchNode = searchNode->right;
+                        continue;
+                    }
+                }
+            }
+            
+            std::vector<BST_node*> inOrderTraverse(BST_node* root) {
+                std::vector<BST_node*> nodes{};
+                blt::flat_stack<BST_node*> nodeStack{};
+                
+                BST_node* current = root;
+                while (current != nullptr || !nodeStack.isEmpty()) {
+                    // go all the way to the left subtree
+                    while (current != nullptr){
+                        nodeStack.push(current);
+                        current = current->left;
+                    }
+                    current = nodeStack.front();
+                    nodeStack.pop();
+                    nodes.push_back(current);
+                    current = current->right;
+                }
+                
+                return nodes;
+            }
+        
+        public:
+            node_binary_search_tree() {
+                m_root = new BST_node();
+            }
+            
+            void insert(const T& element) {
+                insert(m_root, element);
+            }
+            
+            [[nodiscard]] BST_node* search(const T& element) const {
+                search(nullptr, element);
+            }
+            
+            void remove(const T& element) {
+                BST_node* parent = nullptr;
+                auto elementNode = search(parent, element);
+                // reconstruct subtree. More efficient way of doing this... TODO
+                std::vector<BST_node*> subNodes = inOrderTraverse(elementNode);
+                for (auto* node : subNodes){
+                    if (node != elementNode)
+                        insert(parent, node->payload);
+                }
+            }
+            
+            ~node_binary_search_tree() {
+                delete (m_root);
+            }
+    };
+    
+    template<typename T>
+    class flat_binary_search_tree {
+        private:
+        
+    };
+    
+    template<typename T>
+    using node_BST = node_binary_search_tree<T>;
+    template<typename T>
+    using flat_BST = flat_binary_search_tree<T>;
+    
+}
+
+#endif //BLT_BINARY_TREE_H

include/blt/std/math.h

@@ -0,0 +1,16 @@
+/*
+ * Created by Brett on 09/01/23.
+ * Licensed under GNU General Public License V3.0
+ * See LICENSE file for license detail
+ */
+
+#ifndef BLT_MATH_H
+#define BLT_MATH_H
+
+namespace blt {
+    
+
+
+}
+
+#endif //BLT_MATH_H

include/blt/std/queue.h

@@ -10,7 +10,7 @@
 /**
  * Do no use any queue in this file. They are slower than std::queue.
  */
-namespace BLT {
+namespace blt {
     
     template<typename T>
     struct node {
@@ -185,7 +185,6 @@ namespace BLT {
                 }
             }
     };
-    
 }
 
 #endif //BLT_QUEUE_H

include/blt/std/random.h

@@ -9,7 +9,7 @@
 
 #include <random>
 
-namespace BLT {
+namespace blt {
     /**
      * Creates a container class for generating random number distributions
      * @tparam T numeric type

include/blt/std/string.h

@@ -12,7 +12,7 @@
 #include <algorithm>
 #include <vector>
 
-namespace BLT::String {
+namespace blt::String {
     /**
      * Converts the string into lower case
      * @param s string to lower case

include/blt/std/system.h

@@ -7,7 +7,7 @@
 #ifndef BLT_SYSTEM_H
 #define BLT_SYSTEM_H
 
-namespace BLT::System {
+namespace blt::System {
     // TODO: system memory and current CPU usage. (Linux Only currently)
 }
 

include/blt/std/time.h

@@ -11,7 +11,7 @@
 #include <ctime>
 #include <sstream>
 
-namespace BLT::System {
+namespace blt::System {
     static inline auto getCurrentTimeNanoseconds() {
         return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
     }

src/blt/profiling/profiler.cpp

@@ -5,6 +5,6 @@
  */
 #include <blt/profiling/profiler.h>
 
-namespace BLT {
+namespace blt {
     
 }

src/blt/std/queues.cpp

@@ -5,6 +5,6 @@
  */
 #include <blt/std/queue.h>
 
-namespace BLT {
+namespace blt {
 
 }

src/blt/std/system.cpp

@@ -4,3 +4,4 @@
  * See LICENSE file for license detail
  */
 #include <blt/std/system.h>
+#include <blt/std/binary_tree.h>