【正文】
圓的半徑r=:))s=a*r*rprint({:.2f}.format(s))八 順序查找(要查找的數不存在返回1)def linearSearch(A,x): for i in range(0,len(A)): if A[i]==x: return i return 1A=[1,3,5,6,8,9,11,13,14,15,19,22]x=eval(input(請輸入要查找的數x:))n=linearSearch(A,x)print(x在A中索引值為:,n)九 二分查找A=[1,3,5,6,8,9,11,13,14,15,19,22]x=eval(input(請輸入要查找的數x:))a=0c=len(A)1while a=c: b=(a+c)//2 if A[b]==x: print(x在A中的索引值為:,b) break elif A[b]x: a=b+1 else: c=b1十 統計詞頻a=jgfahfaglfgalfgdj