onsite: You have a tree represented as parent, child tuples like this: [(39, 38), (80, 70), (39, 42), (80, 91), (37, 22), (37, 39), (42, 45), (48, 37), (91, 85), (48, 60), (60, 80), (60, 50)] Write a function that returns the root of that tree.

onsite: # 1) Write a function that, given a binary tree, will produce the mode # of the tree. # # In the event of a tie, the item with the greatest value should be returned. # class BinaryNode(object): def __init__(self, data, left, right): self.data = data self.left = left self.right = right # 2) Convert the binary case above to an N-ary case.

onsite: """ In this problem, you'll implement Conway’s Game of Life, a kind of simulation of the interactions between "living" organisms. The game begins with a pre-seeded board of "dead" and "live" cells ("Gen 0"), and the next generation of the board is determined by applying a set of transformation rules to the current generation. For each generation, apply the following set of rules to each cell to generate the next generation's board: - Any live cell with fewer than two live neighbors dies, as if caused by underpopulation. - Any live cell with two or three live neighbors lives on to the next generation. - Any live cell with more than three live neighbors dies, as if by overpopulation. - Any dead cell with exactly three live neighbors becomes a live cell, as if by reproduction. Here's an example seed, “Blinker”: Gen 0: Gen 1: Gen 2: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ |_ _ _ _ _| |_ _ _ _ _| |_ _ _ _ _| |_ _ O _ _| |_ _ _ _ _| |_ _ O _ _| |_ _ O _ _| |_ O O O _| |_ _ O _ _| |_ _ O _ _| |_ _ _ _ _| |_ _ O _ _| |_ _ _ _ _| |_ _ _ _ _| |_ _ _ _ _| Please implement the stub implementation provided below. """ class GameOfLife: def __init__(self, seed): pass def display(self): """Step 1: implement this stub""" pass def iterate(self): """Step 2: implement this stub""" pass blinker = [[False, False, False, False, False], [False, False, True, False, False], [False, False, True, False, False], [False, False, True, False, False], [False, False, False, False, False]] def run_blinker(): gol = GameOfLife(blinker) for i in range(5): gol.display() gol.iterate() def run_custom_example(): # Your additional test cases pass run_blinker() run_custom_example()

phone screen: import json docid_to_title = json.loads('{"28099931907": {"content": {"title": "Zika dollars and Internet fight in play as government shutdown looms"}}, "28108959337": {"content": {"title": "Leaders express renewed optimism about flood relief as Congress aims to avoid a government shutdown"}}, "28110814722": {"content": {"title": "Senate passes stopgap spending bill, $1.1B to fight Zika"}}, "28101422554": {"content": {"title": "Senate blocks bill to avert shutdown as De..."}}, "28099132063": {"content": {"title": "Senate Dems threaten shutdown over Flint aid"}}, "28101167069": {"content": {"title": "Zika dollars, internet fight in play as government shutdown looms"}}, "28102817621": {"content": {"title": "House leaders reach deal on Flint aid, potentially averting shutdown"}}, "28108039075": {"content": {"title": "Deal reached to keep US government running, help Flint"}}, "28098698025": {"content": {"title": "Defeat of Republicans\\u2019 stop-gap spending bill brings federal government closer to a shutdown"}}, "28097027782": {"content": {"title": "Will Democrats force a government shutdown over Flint relief funds?"}}, "28111131355": {"content": {"title": "Lawmakers strike deal to avoid shutdown"}}, "28110856451": {"content": {"title": "Louisiana flood aid, $500 million, survives Senate budget fight"}}, "28106625838": {"content": {"title": "Pelosi aide says deal with Speaker Ryan covers Flint aid"}}, "28099931906": {"content": {"title": "Zika dollars and Internet fight in play as government shutdown looms"}}, "28096859458": {"content": {"title": "Are Democrats pushing the federal government toward a shutdown?"}}, "28110814723": {"content": {"title": "Senate passes stopgap spending bill, $1.1B to fight Zika"}}, "28093906031": {"content": {"title": "will democrats force a federal shutdown over Flint relief funds?"}}, "28108873175": {"content": {"title": "Senate Democrats accept deal on Flint aid, potentially averting shutdown", "sources": ["ABC", "FOX"]}}, "28103573587": {"content": {"title": "ALEXANDER : Senate Democrats\\u2019 Election Politics Are Putting Babies at Risk"}}, "28096849799": {"content": {"title": "Democrats poised to block stopgap funding bill over Flint"}}, "28098943696": {"content": {"title": "Senate blocks stopgap bill to prevent shutdown this weekend"}}, "28110942840": {"content": {"title": "Senate Passes Short-Term Government Funding Measure"}}, "28107038234": {"content": {"title": "House aides: Deal reached to help Flint, keep US gov\'t open"}}, "28084509076": {"content": {"title": "Week ahead: Spending fight shifts from Zika to Flint"}}, "28089633072": {"content": {"title": "Flint water aid spending bill\'s sticking point"}}, "28099749478": {"content": {"title": "Government shutdown looms due to partisan clash over Flint aid"}}, "28099468922": {"content": {"title": "Funding bill rejected as shutdown nears"}}, "28107540657": {"content": null}, "28098940419": {"content": {"title": ""}}, "28110838282": {"content": {"title": "Senate approves deal to keep government open, combat Zika"}}, "28093943889": {"content": {"title": "Democrats press talks as showdown vote looms on funding bill"}}, "28099506681": {"content": {"title": "Republicans ready new bid to avoid shutdown"}}, "28084188573": {"content": {"title": "Zika: Congressional showdown coming this week"}}, "28109130960": {"content": {"title": "McConnell: Let\\u2019s Keep Working Together to Pass Critical Resources"}}, "28097129455": {"content": {"title": "McConnell: We Cannot Afford to Wait Any Longer on Providing Critical Resources"}}, "28110653655": {"content": {"title": "Deal averts federal shutdown, ignores Cruz\' Internet \'giveaway\'"}}, "28110819318": {"content": {"title": "Senate passes spending bill after separate Flint aid deal"}}, "28106754872": {"content": {"title": "Democrats: Deal reached to help Flint, keep US gov\'t open"}}, "28093906030": {"content": {"title": "Will Democrats force a federal shutdown over Flint relief funds?"}}, "28108257314": {"content": {"title": "US Senate Again Blocks Bill That Includes Zika Funding"}}, "28097690131": {"content": {"title": "Cornyn: Democrats Pushing Country Towards Shutdown for Political Gain"}},...) # 1. Write a function that identifies all the unique words across all the `content.title` fields in `docid_to_title`. # 2. Write a function that computes the k most frequent bigrams across all the `content.title` fields in `docid_to_title`. # 3. Find all the duplicate titles in `content.title` fields in `docid_to_title`.