class Node {
    constructor(value){
        this.value = value
        this.left = null
        this.right = null
    
    }

}
class BinarySearchTree {

    constructor(){
      this.root = null
    }
 
  find(value){
      if(!this.root) return false
      
      let current = this.root
      let found = false
      while(current && !found){
            if(value < current.value){
              current = current.left
             } else if(value > current.value){
                current = current.right
             } else {
                  found = current
             } 
            
            }
    
        if(!found) return undefined;
        return found
      
  
  }
   insert(value){
        var newNode = new Node(value);
        if(this.root === null){
            this.root = newNode;
            return this;
        }
        let current = this.root;
        while(current){
            if(value === current.value) return undefined;
            if(value < current.value){
                if(current.left === null){
                    current.left = newNode;
                    return this;
                }
                current = current.left;
            } else {
                if(current.right === null){
                    current.right = newNode;
                    return this;
                } 
                current = current.right;
            }
        }
    }
}