WhiskersReneeWe

# Divide each 28*28 image into 2*2 non-overlapping blocks. 
shrink_img <- function(img){
  # input: 28 * 28 image
  # window size is 2 * 2, move horizontally -- fix row first, move across columns
  # output: 14 * 14 image
  shrinked_img = matrix(, nrow = 14, ncol = 14)
  
  for (i in c(0:13)) {
      for (j in c(0:13)){
        row = 1 + 2 * i

WhiskersReneeWe

t = "57888888882339999"
str1 = "6539923335"
str4 = '234253876334'
def is_NumberStream(str):
    import re
    for i in t:
        pattern = i * int(i)
        if re.search(pattern, str):
            return True
        else:

WhiskersReneeWe

# A RouteTrieNode will be similar to our autocomplete TrieNode... with one additional element, a handler.
class RouteTrieNode(object):
    def __init__(self, handler = 'root handler', default_handler = 'not found handler'):
        # Initialize the node with children as before, plus a handler
        self.children = {}
        self.handler = handler
        self.default_handler = default_handler
        

    def insert(self, part, part_handler):

WhiskersReneeWe

class TrieNode:
    def __init__(self):
        ## Initialize this node in the Trie
        self.children = {}
        self.is_word = False
    
    def insert(self, char):
        ## Add a child node in this Trie
        if char not in self.children:
            self.children[char] = TrieNode()

WhiskersReneeWe

# blockchain implementation using Linked List
# Copyright: Renee S. Liu

# First is the information hash
# We do this for the information we want to store in the block chain
# such as transaction time, data, and information like the previous chain.
import hashlib
import datetime as date

# The next main component is the block class