Hướng dẫn python factor large numbers

The Prime Factor Tree is a visual technique used in Maths to workout all the prime factors of a large number. With this approach, all the leaf nodes [nodes without sub-branches] are the prime factors of the root node. For instance, with the above tree, the prime factors of 150 are 2, 3, 5 and 5 again. In other words:150 = 2 x 3 x 5 x 5 = 2 x 3 x 52

We have decided to create our own Prime Factor Tree Algorithm to build a binary tree structure to store all the prime factors of any given root number.

The aim of this challenge is to demonstrate one way to implement a Binary Tree Structure in Python using a very basic Node Class.

#A class to implement a Node / Tree

classNode:

  def__init__[self,value,left=None,right=None]:

    self.value =value

    self.left=left

    self.right=right

With this approach, a Tree is in fact just a Node [a root Node]!
Here is how we could create a basic prime factor tree for number 10 = 2 x 5:

tree=Node[10]

tree.left=Node[2]

tree.right=Node[5]

We then added two additional methods to our Node Class:

  1. The drawTree[] method is used to draw the tree on screen. It’s based on a complex algorithm that we imported from the tree.py module.
  2. The buildPrimeFactorTree[] method is used to recursively add branches/sub-nodes to our root tree to build the Prime Factor Tree progressively.

Here is the full implementation of our Prime Factor Tree Algorithm in Python:

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