1.Print?multiplication table
#99乘法表
for i in range(1,10): ?
sum=""?
????for j in range(1,i+1):?
????????a=str(j)+"*"+str(i)+"="+str(i*j)+"\t"?
????????sum+=a ??print(sum)
update：
for i in range(1,10):
? ? sum=""
? ? for j in range(i,10):
? ? ? ? a=str(i)+"*"+str(j)+"="+str(j*i)+"\t"
? ? ? ? sum+=a
? ? else:
? ? ? ? sum=" "*i*8+sum
? ? print(sum)
2.Print a?Rhombic
#打印菱形
for i in range(1,8,2):
????a=(8-i)//2
????print(" "*a+"*"*i)
for j in range(5,0,-2): ? #???如何簡(jiǎn)寫
????a=(7-j)//2
????print(" "*a+"*"*j)
update：
for i in range(-3,4):
? ? if i > 0:
? ? ? ? i = i
? ? else:
? ? ? ? i = -i
? ? print(" "*i+"*"*((4-i)*2-1))
update:
Print a lightning
for i in range(-3,4): ? ? #如何精簡(jiǎn)
? ? if i == 0:
? ? ? ? print(7*"*")
? ? elif i < 0:
? ? ? ? i = abs(i)
? ? ? ? print(" "*abs(i)+"*"*(4-abs(i)))
? ? else:
? ? ? ? print(" "*3+"*"*(4-abs(i)))
update:
Print Two Triangles with Common Vertex
n=int(input("please enter the number about height of the triangle:"))
for i in range(1-n,n):
? ? if i == 0:
? ? ? ? print(" "*(4-abs(i))+"*")
? ? else:
? ? ? ? print(" "*(4-abs(i))+"*"*(abs(i)*2+1))
3.Print?Fibonacci Series within 100
#打印100以內(nèi)斐波那契數(shù)列
a=1
b=1
print(a,b,sep='\n')
for i in range(5):
? ? a+=b
? ? if a>100:
? ? ? ? break
? ? print(a)
? ? b+=a
? ? if b>100:
? ? ? ? break
? ? print(b)
4.Calculate the Nth/101st of the Fibonacci series?
#打印斐波那契數(shù)列第N位
number=int(input("please enter a number:"))
a=1
b=1
if 0<number<=2:
? ? print("the "+str(number)+" of the Fibonacci series is 1")
if number>2:
? ? n=(number-1)//2
? ? for i in range(n):
? ? ? ? a+=b
? ? ? ? b+=a
? ? if number%2!=0:
? ? ? ? print("the "+str(number)+" of the Fibonacci series is "+str(a))
? ? else:
? ? ? ? print("the "+str(number)+" of the Fibonacci series is "+str(b))
other people's:
update:
n=int(input(">>>"))
a=0
b=1
print(b)
for i in range(n):
? ? c=a+b
? ? print(c)
? ? a=b
? ? b=c
5.Calculate all the prime number within 100000
count=0
for i in range(1,100000,2):
? ? a=int(i**0.5+1)
? ? for j in range(3,a):
? ? ? ? if i % j == 0:
? ? ? ? ? ? break
? ? else:
? ? ? ? count+=1
? ? ? ? print(i)
print("num:"+str(count))
