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Files » erfencaozhao.py

UserName LastName, 03/28/2025 10:55 AM

 
def erfenchaozhao(n,shu):
head=0
tail=len(n)-1
while head<=tail:
mid=(head+tail)//2
caishu=n[mid]
if shu==caishu:
return mid
elif shu>caishu:
head=mid+1
elif shu<caishu:
tail=mid-1
return False
num=[1,2,3,4,5,6,7,8,9]
shui=int(input("请输入一个数:"))

if erfenchaozhao(num,shui):
print(f"{shui}在这个列表中")
else:
print(f"{shui}不在这个列表中")
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