40 lines
704 B
Python
40 lines
704 B
Python
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#!/usr/bin/env python3
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def lychrel(x):
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ly=[]
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i=1
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while i<x:
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num=i
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count=0
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while count<50:
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num=num+analogize(digitize(num)[::-1])
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if pal_check(num):
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break
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count+=1
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else:
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ly.append(i)
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i+=1
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return ly
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def analogize(x):
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i=0
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num=0
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while i<len(x):
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num+=x[i]*(10**i)
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i+=1
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return num
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def pal_check(x):
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d=digitize(x)
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if d==d[::-1]:
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return True
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return False
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def digitize(x):
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if x<10:
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return [x]
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return [x%10]+digitize(x//10)
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if __name__ == '__main__':
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print(len(lychrel(10**4)))
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