#Head and tails coin flip code#

You count all streaks of at least length six, the text reads such that only streaks of exactly length six count. You have a potential bug / the problem description is not explicit enough / their tests don't have enough coverage. This means that instead of while len(delList)!=0 you can just do while delList. In general, empty collections are falsey in Python, and non-empty collections are truthy. One exception are functions that are used only for testing and would pollute the global namespace unnecessarily, but this is not the case here. Imports should usually go into the global scope, at the top of your code. PEP 8 also recommends surrounding = with spaces when used for assignment and the same for binary operators (like !=, but also augmented assignment like +=). Since this is a programming challenge, you can probably not change the function name, but the variable names are fully under your control. Python has an official style-guide, PEP8, which recommends using lower_case for both functions and variables. If there are any errors, please point them out as I'm a beginner. However, I would like to know if there is a better way to approach or solve this problem.

The inputList is the randomly generated list of H and T resulting from 100 coin tosses. Try: # When the last element remains, there is no element left that can calculate the difference->Įxcept: # The error generated is dealt here.

My Solution: def streakFinder(inputList):ĭelList=py(inputList) # The list is copied to another reference so that it can be safely modified without affecting the original list As a hint, the function call random.randint(0, 1) will return a 0 value 50% of the time and a 1 value the other 50% of the time.

#Head and tails coin flip code#

Put all of this code in a loop that repeats the experiment 10,000 times so we can find out what percentage of the coin flips contains a streak of six heads or tails in a row. Your program breaks up the experiment into two parts: the first part generates a list of randomly selected 'heads' and 'tails' values, and the second part checks if there is a streak in it. Write a program to find out how often a streak of six heads or a streak of six tails comes up in a randomly generated list of heads and tails. Humans are predictably bad at being random. A human will almost never write down a streak of six heads or six tails in a row, even though it is highly likely to happen in truly random coin flips. If you flip a coin 100 times and write down an “H” for each heads and “T” for each tails, you’ll create a list that looks like “T T T T H H H H T T.” If you ask a human to make up 100 random coin flips, you’ll probably end up with alternating head-tail results like “H T H T H H T H T T,” which looks random (to humans), but isn’t mathematically random.

Coin Flip Streaks:įor this exercise, we’ll try doing an experiment. The question is from Automate the Boring Stuff with Python and asks us to find the number of streaks of six heads or six tails that come up when a coin is tossed 100 times.