Question

In Python, design a program that simulates the roll of a pair of dice (two dice) and calculates the probability that various number combinations will be rolled. Let the user enter a number. This is the number of times they will roll the dice. You will roll the dice in a loop and keep track of the number of times that various rolls occur. When the loop has completed, your program should produce a table that shows the value of the roll accompanied by the number of times that roll occurred and the percentage of the time that value occurred. The output should look like

total iterations: 100

number rolls percent

1 80 .80

2 10 .10

3 10 .10 ...

We can't use frequency or dict functions

Answer 1

Thanks for the question, I have used simple list to track the counts and as asked I have not used any dictionary function or frequency function.

Here is the code, Let me know for any help. 

The minimum sum can be when both the values are 1 and so the sum is 2, the max value can be 16 ( both 6)

the getDiceRolls() function generates two random number between 1 and 6 and returns the values as a tuple.

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import random

def getDiceRolls():

    return random.randint(1,6), random.randint(1,6)

def main():
    number_of_rolls = int(input('Enter the number of rolls: '))

    rolls_count = [0]*13
    for _ in range(number_of_rolls):
        dice1,dice2 = getDiceRolls()
        sum_roll_value = dice1+dice2
        rolls_count[sum_roll_value]+=1

    print('Total iterations: {}'.format(number_of_rolls))
    for i in range(2,len(rolls_count)):
        print('{:>2} {:>2} {:4.2f}%'.format(i,rolls_count[i],100*rolls_count[i]/number_of_rolls))
main()

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