Binary Search Tree ADT

Source Code:
Github: BinarySearchTree.java

Output:

             
Insert 50 :
42 
    
Insert 40 :
 42   
/   
40   
        
Insert 32, 45, 65, 55, 66, 7, 42,87 :
               42                               
              / \               
             /   \              
            /     \             
           /       \            
          /         \           
         /           \          
        /             \         
       /               \        
       40               45               
      /                 \       
     /                   \      
    /                     \     
   /                       \    
   32                       65       
  /                       / \   
 /                       /   \  
 7                       55   66   
                              \ 
                              87 
                                                                
Min : Node(7)
Max : Node(87)
Find 55 :Node(55)
Find 87 :Node(87)
Find 76 :null
Delete 87: 

       42               
      / \       
     /   \      
    /     \     
   /       \    
   40       45       
  /         \   
 /           \  
 32           65   
/           / \ 
7           55 66 
                                
Delete 32:

       42               
      / \       
     /   \      
    /     \     
   /       \    
   40       45       
  /         \   
 /           \  
 7           65   
            / \ 
            55 66 
                                
Delete 40:

       42               
      / \       
     /   \      
    /     \     
   /       \    
   7       45       
            \   
             \  
             65   
            / \ 
            55 66 
                                
Delete 65:

       42               
      / \       
     /   \      
    /     \     
   /       \    
   7       45       
            \   
             \  
             55   
              \ 
              66 
                                
Delete 50:

       42               
      / \       
     /   \      
    /     \     
   /       \    
   7       45       
            \   
             \  
             55   
              \ 
              66 
                                
Delete 45, 7, 55, 42, 66 :

42