a863: 3. Happy Numbers

百千.IOhttp://zerojudge.tw/ShowProblem?problemid=a863

• def is_happy(n):
• if n==1:
• return True
• if count>100:
• return False
• global count
• count+=1
• N=0
• for i in str(n):
• N+=int(i)**2
• return True if is_happy(N) else False
• while True:
• try:
• n=int(input())
• count=0
• if is_happy(n):
• print(str(n)+' is a happy number')
• else:
• print(str(n)+' is an unhappy number')
• except:
• break

嚼嚼看不懂就算了的版本:

• def hh(n):
• global w,t
• t+=[n]
• if n==1:
• w=n
• return
• if len(t)>100:
• w=n
• return
• n=str(n)
• k=0
• for x in range(len(n)):
• k+=int(n[x])**2
• try:
• tt=t.index(k)
• t+=[k]
• w=k
• return
• except:
• hh(k)
• while True:
• try:
• a=int(input())
• w=0
• t=[]
• hh(a)
• if int(w)==1:
• print(a,'is a happy number')
• else:
• print(a,'is an unhappy number')
• except:
• break