Python 新手入门习题及代码
```## 1.输入圆半径,求面积与周长
r = int(input("R="))
s = 3.14*(r**2)
c = 2*3.14*r
print("S=",s,"\t","C=",c)
## 2.随机输入两个数,比较大小后,从小到大打印
a = int(input("number="))
b = int(input("number="))
if a < b:
print(a,b)
else:
print(b,a)
## 3.输入两个数,打印最大值,按回车结束
a = int(input("number:"))
while 1:
b = input("number:")
if b == '':
break
else:
b = int(b)
if b < a:
print(a)
else:
print(b)
a = b
## 4.求输入数据平均值,输入0也加入计算
a,b = 0,0
c = int(input('输入:'))
while 1:
b += 1
a += c
print("均值:",a/b)
c = input('输入:')
if c == '':
print('End')
break
else:
c = int(c)
## 5.打印边长为N的正方形
n=int(input())
for i in range(1,n+1):
if i==1 or i==n:
print('*'*n)
else:
print('*',' '*(n-2),'*')
## 6.X范围内奇,偶数之和(包含X)
z = 0
x = int(input('MAX 1000 000:'))
y = int(input('偶0 奇1:'))
if (x <= 1000000)&(0 <= y <= 1):
for i in range(y,x+1,2):
z += i
print(z)
else:
print('input error')
## 7.查询成绩表
while 1:
x = int(input('number:'))
if 90 <= x <= 100:
x = 'A'
print(x)
elif 80 <= x <= 89:
x = 'B'
print(x)
elif 70 <= x <= 79:
x = 'C'
print(x)
elif 60 <= x <= 69:
x = 'D'
print(x)
elif 0 <= x <= 59:
x = 'E'
print(x)
else:
print('Input Error')
## 8.1到N的阶乘之和
x = int(input('number:'))
m = 1
h = 0
for i in range(1,x+1):#X阶层计算
m = i*m
h += m
print(h)
## 9.九九乘法表
for i in range(1,10):
k = 1
for n in range(i,10):
z = i*n
if i == 1:
print(i,'x',n,'=',z,end=' ')
elif i != 1:
print('\n'*k,i,'x',n,'=',z,end=' ')
k -= 1
## 10.N以内的斐波那契数列
n = int(input('范围:'))
a,b = 0,1
while 1:
print(a,end=' ')
a,b = b,a+b
if a> = n:
break
## 11.斐波那契数列的第N项
a,b,c = 0,1,0
n = int(input('查询项:'))
while 1:
a,b,c = b,a+b,c+1
if c == n:
print(a)
break
## 12.输入100位以内数据按位位打印
a = int(input())
x = 100#最大权
w = 10**x
log = 1
while log:
if a//w == 0:#找最高位
x = x-1
w = 10**x
else:#找到最高位
log = 0
while w:
b = a//w#首位
a %= w#为下次循环变量改为余数
w //= 10#降权
print(b,end=' ')
## 13.给出随机0100中的数字,使其排序算法,如出现具体数字则排序结束`
import random
li = [1]
k = 0
while k != 88:
k = random.choice(range(100))
if k in li:
continue
li.append(k)
li.sort()
print(li)
## 14.求x以内的素数,给一个随机数,如果该数能整除质数,那该数就为合数
li = [2]
x = int(input())
for i in range(2,x):
a = 1
for n in li:
if i%n == 0:
a = 0
break
if a:
li.append(i)
print(li)
## 15.求1-2+3-4+5.......99的值
x,y = 0,1
for i in range(1,100):
i = i*y
x += i
y *= (-1)
print('count:',x)
## 16.用户登录,连续错误三次退出
name=input('user name:')
c = 3
while c:
key=input('pass Word:')
if name == '1' and key == '2':
print('True')
break
else:
print( 'False')
c = c-1
## 17.输入随机数字列出所有能整除它的数字
x = int(input())
li = []
for i in range(1,x+1):
if x%i == 0:
li.append(i)
print(li)
## 18.3文钱能买一只公鸡,2文钱能买一母鸡,1文钱能买3小鸡,现在花100钱买100鸡,如何买
for x in range(1,101):
c = 100-x
v = 100-x/3
for m in range(1,100):
if c-m == (v-2*m)/3 and c-m >= 0:
g = c-m
print('公鸡:',g,'母鸡:',m, '小鸡:',x)
## 19.输入三个数,看是否能构成三角形
a = 5
b = 75
c = 6
if a+b<c or a+c<b:
print('ng')
else:
print('ok')
## 20.水仙花数
l1 = []
l2 = []
for i in range(100,1000):
w = 100
ii = i
while w:
a = i//w#首位
i %= w#余数
w //= 10#降权
l1.append(a)
## 如果该数的各位数的立方之和等于该数,那该数称为水仙花数
if l1[0]**3+l1[1]**3+l1[2]**3 == ii:
l2.append(ii)
else:
l1 = []
print(l2)
## 21.一个正整数分解质因数
l1,l2 = [2],[]
n,log = 0,1
for i in range(2,1000):#范围内质数并输出到列表1
k = 1
for x in l1:
if i%x == 0:#如果迭代值为合数,则终止当前循环且不把该值加入列表1
k = 0
break
else:
pass
if k:
l1.append(i)
#print(l1)#打印质数表
cc=int(input('正整数:'))
while log:
if cc%l1[n] == 0 and cc != l1[n]:#如果输入值能整除当前质数且不为当前质数,分解输入值并把质数加入列表
l2.append(l1[n])
cc = cc / l1[n]
elif cc == l1[n]:#输入值经过计算或直接等于素数,把该素数加入列表
l2.append(l1[n])
log = 0
elif cc > l1[n]:
n = n + 1
print('质因数:',l2)
## 22.球从100米高处下落,每次反弹上次距离的一半,10次后,球运动多少米
b = 200
x = 100
for i in range(1,10):
b = b/2
x = x+b
print(x)
## 23.1,2,3,4个数字,能组成多少个不重复的数,每个数字只能用一次
l1 = [1,2,3,4]
l2 = []
a,b,c,d = 0,0,0,0
for a in l1:
for b in l1:
if a == b:
pass
else:#第一位数不等于第二位数
for c in l1:
if a == c or b == c:
pass
else:#第一位数不等于第三位数
for d in l1:
if a == d or b == d or c == d:
pass
else:#第一位数不等于第四位数
l2.append([a,b,c,d])
print(l2)
## 24.一个数+100后是一个完全平方数,再在加168又是一个,求该数
for i in range(1000000):
if 250000>i>10000:
t = 100
k = 500
elif 490000>i>250000:
t = 500
k = 700
elif 810000>i>490000:
t = 700
k = 900
elif 1000000>i>810000:
t = 900
k = 1000
else:
t = 0
k = 100
for u in range(t,k):
if i+100 == u*u:
for y in range(t,k):
if i+268 == y*y:
print(i,u,y)
## 25.猴子吃桃,x个桃子,每天早上吃掉一半+1,第10天早上发现剩1,求x
a = 1
for i in range(1,10):
a = 2*(a+1)
print(a)
## 26.已知a,b,c,与x,y,z--------------c==y,a!=x,
c='y'
l1=['x','y','z']
for i in l1:
if i == c:
for a in l1:
if a != 'x' and a != c:
for b in l1:
if b != c and b != a:
print('c:',c,' b:',b,' a:',a)
## 27.,打出该序列2/1,3/2,5/3,8/5,13/8,12/13......前20项之和
a = 2
b = 1
c = 0
for i in range(1,21):
c += a/b
a, b = a+b, a
print(c)
## 28.求1+2n+3n+4n+5n...20n
n,k = 2,0
for i in range(2,21):
k += i*n
#print(i,end=' ')
k+1
## 29.输入5位数看是否为回文数
a = input()
b = a[ :1]
c = a[1:2]
d = a[2:3]
e = a[3:4]
f = a[4:5]
if b == f and c == e:
print('yes')
else:
`print('no')```相关文章