a=[9, 7, 17, 16, 13, 9, 16, 14, 8, 13]
n=len(a)
p=[False]*n
ans=[]
for i in range(2):
mx=-1
for j in range(n):
if not p[j]:
if mx==-1 or a[j]>a[mx]:
mx=j p[mx]=True
ans.append(a[mx]) print(ans)
程序执行后的输出结果是( )
dic = {"a": [9,12],"b": [8,16]}
dic["a"][1] = 15
dic["c"] = [12,13,11]
s="abc";sum=0
for i in s:
sum += dic[i][1] print(sum)
该程序运行后输出的结果为( )
dict={1:"p",2:"y",3:"t",4:"h",5:"o",6:"n"}
num=[4,2,1,5]
result=""
for i in num:
result+=dict[i]
print(result)
执行该程序段后,result的值为( )
import random
s1="PROGRESS";s2=""
f=[False]*8
for i in range(1,5):
t=random.randint(0,3)*2+1
while f[t]:
t=random.randint(0,3)*2+1
f[t]=True
s2=s2+s1[t]
print(s2)
执行该程序段后,显示的值不可能是( )
小明编写Python程序实现:运行程序时,输入任意整数,执行后,输出搭建该数字所需要的火柴棍的数量。运行样例如图2所示。
请回答以下问题:
hc={"0":6,"1":2,"2":5,"3":5,"4":4,"5":5,"6":6,"7":3,"8":7,"9":6}
num=
s=input("请输入待搭建的数字:")
for i in s:
num=
print("所需火柴棍的数量为:",num)
L=[5,8,7,8,2,6,4,6,8,9]
k=int(input("请输入 k 值:"))
j=0
for i in range(10):
if L[i]<=k:
L[j]=L[i]
j=j+1
print(L[2])
s="012345"
lst=["6","7","8","9"]
dic={"018":1,"028":2,"029":3,"039":4}
print(dic[s[:4:2]+lst[3]])
该程序运行后的输出结果为:( )
k=1; lmax=1; n=len(d)
for I in range(1, n):
if d[i]>d[i-1]:
k+=1
else:
if k>lmax:
lmax=k
k=1
print(lmax)
该程序段在某些情况下无法得到符合题意的结果,下列4组数据中能测试出这一问题的是( )
item={"竞技类":["铁人三项","电子竞技","霹雳舞"],"球类":["足球","篮球","乒乓球"],
"对抗性":["拳击","跆拳道","卡巴迪","击剑"],"水上":["跳水","龙舟","帆船"]}
print(item["对抗性"][2][::-1])
执行该程序段后,输出的结果是( )
from random import randint
s=["C++","Java","VB","Pascal","C","Python"]
for i in range(2):
k=randint(0,2)*2
s=s[:k]+s[k+1:]
print(s)
执行该程序段后,变量s的值不可能是( )