数组
一维数组输入方法:
len = int(input())#输入数组长度
arr = input("")
a = [int(n) for n in arr.split()]
二维数组输入方法:
for i in range(n):
a = list(map(int,input().split()))
字符串输入方法:
str = input()
1115: 数组最小值
手写最小值代码:
mi = 1e9
index = -1
if __name__ == '__main__':
len = int(input())
arr = input("")
#a = input().split()
a = [int(n) for n in arr.split()]
for i in range(len):
if mi > a[i] :
mi = a[i]
index = i
print(mi,index)
内置函数版本:
a=int(input())
b=input().split()
d=min(b)
e=b.index(d)
print(d,e)
1125: 上三角矩阵的判断
二维数组小练习 代码:
if __name__ == '__main__':
n = int(input())
flag = 1
for i in range(n):
a = list(map(int,input().split()))
for j in range(n):
if j < i and a[j]!=0 :
flag = 0
break
if flag:
print("YES")
else:
print("NO")
1163: 亲和串(字符串)
思路:就是复制一份s1连接到s1后面,查找子串 资料链接:python中字符串的定义和操作 代码:
if __name__ == '__main__':
while True:
try:
str = input()
str1 = input()
if len(str) < len(str1) :
print("no")
continue
str = str * 2
index = str.find(str1)
#print(str)
#print(len(str))
if index != -1 :
print("yes")
else:
print("no")
except:
break
函数专题
资料链接: https://www.runoob.com/python/python-functions.html
1106: 回文数(函数专题)
代码:
def solve(x):
st = x
st1 = 0
while x:
st1 = st1*10 + x%10
x
if st == st1 :
return 1
else :
return 0
if __name__ == '__main__':
a,b = map(int,input().split())
for i in range(a,b+1):
t = solve(i)
if t:
print(i,end=" ")
1091: 童年生活二三事(多实例测试)
代码:
a = [0]*100
# 递归函数,会时间超限
# def f(x):
# if x==1:
# return 1
# elif x==2 :
# return 1
# else :
# return f(x-1)+f(x-2)
def init():
a[1]=1
a[2]=2
for i in range(3,41):
a[i] = a[i-1] + a[i-2]
if __name__ == '__main__':
init()
while True:
n = int(input())
if n==0:
break
# t = f(n)
print(a[n])
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