Initial commit

c++/Others/Binary Search Tree.cpp

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+Binary Search Tree
+
+#include<iostream.h>
+#include<conio.h>
+#include<alloc.h>
+
+struct tree
+ {
+  int data;
+  tree *left;
+  tree *right;
+ }*sptr,*q;
+  void rightcheck();
+  void leftcheck();
+  void search();
+
+  int insdata;
+  tree *node;
+  void main()
+   {
+    clrscr();
+    node=new tree;
+    cout<<"   PLEASE  PUT  THE root->>";
+    cin>>node->data;
+    sptr=node;
+    q=sptr;
+    node->left=NULL;
+    node->right=NULL;
+    cout<<"   GIVE THE child->>";
+    cin>>insdata;
+    search();
+    while(insdata!=0)
+	{
+	 if(insdata>sptr->data)
+	    rightcheck();
+	 else
+	    leftcheck();
+	    cout<<"   GIVE  THE  child->>";
+	    cin>>insdata;
+	    search();
+	    sptr=node;
+       }
+      getch();
+      }
+     void rightcheck()
+       {
+	 if(sptr->right==NULL)
+	   {
+	    cout<<"    "<<insdata<<" IS THE  RIGHT  child of "<<q->data<<endl;
+	    sptr->right=new tree;
+	    sptr=sptr->right;
+	    sptr->data=insdata;
+	    sptr->left=NULL;
+	    sptr->right=NULL;
+	    q=node;
+	   }
+	 else
+	    {
+	     if(insdata>sptr->data)
+	      {
+	       sptr=sptr->right;
+	       q=sptr;
+	       if(insdata>sptr->data)
+		rightcheck();
+		else
+		leftcheck();
+	     }
+	     else
+	      {
+		sptr=sptr->left;
+		q=sptr;
+		leftcheck();
+	      }
+	     }
+	}
+		 void leftcheck()
+	{
+		 if(sptr->left==NULL)
+		  {
+		   cout<<"   "<<insdata<<" IS THE LEFT child of "<<q->data<<endl;
+		   sptr->left=new tree;
+		   sptr=sptr->left;
+		   sptr->data=insdata;
+		   sptr->right=NULL;
+		   sptr->left=NULL;
+		   q=node;
+		  }
+	 else{
+	     if(insdata<sptr->data)
+	      {
+		sptr=sptr->left;
+		q=sptr;
+		if(insdata>sptr->data)
+		rightcheck();
+		else
+		leftcheck();
+	      }
+	     else
+	      {
+		sptr=sptr->right;
+		q=sptr;
+		rightcheck();}
+	      }
+	}
+
+       void search()
+	{
+	   sptr=node;
+	   while(sptr!=NULL)
+	{
+	  if(insdata==sptr->data)
+	    {
+	    cout<<"This is not insertable.";
+	    cout<<"\nInsert child ";
+	    cin>>insdata;
+	    search();
+	    break;
+	    }
+	  else
+	  {
+	    if(insdata>sptr->data)
+		sptr=sptr->right;
+	    else
+		sptr=sptr->left;
+	 }
+       }
+	 sptr=node;
+
+       }