Challenges

Reddit challenges in python language.

Files Code and Result

challenge1_easy

challenge2_easy

challenge3_easy

challenge4_easy

challenge5_easy

challenge6_easy

challenge7_easy

challenge8_easy

challenge9_easy

challenge10_easy

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challenge23_easy

challenge25_easy

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challenge64_easy

challenge65_easy

challenge66_Dev

challenge66_easy

challenge67_easy

challenge68_easy

challenge69_easy

challenge69_easyBonus

challenge70_easy

challenge71_easy.py

challenge72_easy

challenge73_easy

challenge74_easy

challenge76_easy

challenge77_easy

challenge79_easy

challenge80_easyone

challenge82_easy

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challenge104_easy

challenge130_easy

challenge143_easy

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challenge153_easy

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challenge158_easy

challenge158_easybonus

challenge159_easy

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challenge169_easy

challenge169_easybonus

challenge172_easy

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challenge185_easy

challenge192_easy

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challenge202_easy

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challenge204_easy

challenge204_easyBonus

challenge205_easy

challenge205_easyBonu

challenge206_easy

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challenge211_easy

challenge212_easy

challenge212_easybonus

challenge213_easy

challenge214_easy

challenge215_easy

challenge216_easy

challenge217_easy

challenge218_easy

challenge218_easyBonus1

challenge218_easyBunus2

challenge219_easy

challenge220_easy.py

challenge221_easy

challenge221_easy

challenge222_easy

challenge222_easy.py

challenge223_easy

challenge226_easy

challenge226_easy

challenge228_easy.py

challenge228_easydev

challenge229_easy

challenge229_easybonus.py

challenge232_easy

challenge232_easy

challenge232_easybonus

challenge232_easybonus

challenge234_easy

challenge234_easybonus

challenge235_easy

challenge236_easy

challenge237_easy

challenge238_easy

challenge238_easybonus

challenge239_easy

challenge240_easy

challenge242_easy

challenge242_easy

challenge242_easyBonus

challenge243_easy

challenge245_easy

challenge245_easyBonus

challenge246_easy

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challenge249_easy

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challenge255_easy

challenge270_easy

challenge284_easy

challenge286_easy

challenge287_easy

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challenge290_easy

challenge290_easybonus

challenge291_easy

challenge291_easybonus

challenge218_easyBunus2

'''
Bonus 2: See which numbers don't get palindromic in under 10000 steps.
Numbers that never converge are called Lychrel numbers.
Quote:

"Interestingly 89 takes an unusually long time to palindrome. The 24 steps (rendered above),
is the largest number of steps (of non-Lyrchel numbers) less than 10,000."

from http://datagenetics.com/blog/october12015/index.html.

Discovered this after spending fruitless hours trying to beat the
recursion stack limit, well above my pay grade :)
'''
lst = []
def ispal(n):
    n = str(n)
    m = n
    acc = 1
    while True:
        n = str(n)
        # reverse the string
        reversed_n = str(n[::-1])
        # convert to integer and add
        summed = int(n) + int(reversed_n)
        summed = str(summed)
        # are they a palindrome?'
        if summed == summed[::-1]:
            return lst
        else:
            n = summed
            acc += 1
            if acc >= 25:
                lst.append(m)
                return lst
            continue
    return lst

if __name__ == '__main__':
    for x in range(1, 10001):
        ans = ispal(x)
    print('Lychrel numbers below 10000:  ',len(ans))

Result

Lychrel numbers below 10000:   249