2401_84561313:
def getNum():
ls=[]
while True:
num=input()
if num:
ls.append(eval(num))
else:
break
return ls
def avg(ls):
s=0
for i in ls:
s+=i
return s/len(ls)
def dev(ls):
a=avg(ls)
s=0
for i in ls:
s+=(i-a)**2
return s/len(ls)
def median(ls):
ls.sort()
if len(ls)%2==0:
return (ls[len(ls)//2]+ls[len(ls)//2]-1)/2
else:
return ls[len(ls)//2]
ls=getNum()
print("数量",len(ls))
print("和",sum(ls))
print("平均值",avg(ls))
print("方差",dev(ls))
print("中位数",median(ls))
A = [
[1, 1, 1],
[2, 2, 2],
[3, 3, 3]
]
B = [
[1, 0, 0],
[0, 1, 0],
[0, 0, 1]
]
ls = []
for i in range(len(A)):
ls.append([(A[i][j] + B[i][j]) for j in range(len(A[i]))])
print(ls)
A = [
[1, 1, 1],
[2, 2, 2], [3, 3, 3]
]
B = [
[1, 0, 0],
[0, 1, 0],
[0, 0, 1]
]
C = []
for i in range(len(A)):
ls = []
for j in range(len(B)):
s = 0
for k in range(len(A[i])):
s += A[i][k]*B[k][j]
ls.append(s)
C.append(ls)
for i in range(len(C)):
for j in range(len(C[i])):
print(C[i][j], end=' ')
print()
d = dict()
for i in range(5):
name = input()
h = input()
d[name] = h
name = input()
print('{} {}'.format(name, d[name]))
ls = []
a = 0
b = 1
n = eval(input())
for i in range(n):
ls.append(a)
a, b = b, a+b
print(ls)
#输入指定的n
n = eval(input())
#指定输入n个数，换行间隔
ls = []
for i in range(n):
ls.append(eval(input()))
ls.sort()
#计算去掉一个最高分和最低分的平均值
ls = ls[1:-1]
#输出最后得分
avg = sum(ls)/len(ls)
print('该歌手最终成绩为{:.1f}'.format(avg))