Defis详细解读与defisit介绍
很多朋友在找币圈网时都会咨询Defis和defisit,这说明有一部分人对这个问题不太了解,您了解吗?那么什么是defisit?接下来就由小编带大家详细了解一下吧!
python编写一个函数 isMax(a,b,c),参数为三个整型数,函数返回最大的数
python
def isMax(a,b,c):
a = a if ab else b
c = c if ca else a
return c
def sumNcubes(n):
return sum(range(1,n))
def isPrime():
if n = 1:
return False
i = 1
while i*i = n:
if n % i == 0:
return False
i += 1
return True
def是什么意思def Is_prime(a):
这句命令应该写成: cd E:\Matlab2010b\toolbox\local这个问题的原因是你打开了使用Toolbox Path Cache,同时找不到path...
两个python问题
#1.Write a function that returns a new list by eliminating the duplicate values in the list. Use the following function header:
#def eliminate_duplicates(my_list):
#Write
# a main function that reads in numbers separated by a space in one line,
# changes the string to a list of integers, calls the function
#(eliminate_duplicates) and finally displays the result list returned by
#the function.
#The template for the program is as follows:
def eliminate_duplicates(my_list):
# Write the function code here
rtLst = []
for item in my_list:
if item not in rtLst:
rtLst.append(item)
return rtLst
def main():
# Write the main function
strNum = raw_input("")
strNumSplit = strNum.split(' ')
iNumSplit = []
for item in strNumSplit:
iNumSplit.append(ord(item) - ord('0'))
print eliminate_duplicates(iNumSplit)
# Call the main function
main()
#2.Write
# a function that checks whether two words are anagrams and return True
#if they are and False they are not. Two words are anagrams if they
#contain the same letters. For example, "silent" and "listen" are
#anagrams. Use the following function header:
#jdef is_anagram(word1, word2):
#Write a main function
# that prompts the user to enter two strings, calls the is_anagram
#function and then reports whether the strings are anagrams or not.
def is_anagram(word1, word2):
# Write the function code here
if len(word1) != len(word2):
return False
lstFirst = []
for char in word1:
lstFirst.append(char)
lstSecond = []
for char in word2:
lstSecond.append(char)
for item1 in lstFirst:
if lstSecond.count(item1) != 1:
return False
return True
def main():
# Write the main function
strFirst = raw_input("The First:\n")
strSecond = raw_input("The Second:\n")
print is_anagram(strFirst, strSecond)
# Call the main function
main()
PYTHON问题求解。。
True, False 是python的内置基本类型bool的两个值, 不必使用string; 若你的判断逻辑是满足需求的,那么可以这样:
def isSameValue(n1,n2):
if n1==n2:
a=True
else:
a=False
return a
另外: 该函数的逻辑完全可以简化为:
def isSameValue(n1,n2):
return (n1==n2)
isSameValue(10,2)
False
isSameValue(11,11.0)
True
isSameValue(0,-0)
True
# 若必须有if, 可以:
def isSameValue(n1,n2):
return True if (n1==n2) else False
python中如何判断素数
素数的定义:所有比1大的整数中,只能被1或者它本身整除的数为素数
根据定义写出代码:
代码
Python字串查找要如何才能提高使用的速度
也许你会很直观的写下下面的代码:
#determinewhethers1isasubstringofs2
defisSubstring1(s1,s2):tag=Falselenlen1=len(s1)lenlen2=len(s2)foriinrange(0,len2):
ifs2[i]==s1[0]:
forjinrange(0,len1):
ifs2[i]==s1[j]:tag=Truereturntag可是这是Python,我们可以利用字符串自带的find()方法,于是可以这样:
defisSubstring2(s1,s2):tag=False
ifs2.find(s1)!=-1:tag=Truereturntag悲情的事就在于此,原来Python中的关键字in不仅可以用于列表、元祖等数据类型,还可以用于字符串。所以,这里只需要直接一行代码搞定:
defisSubstring3(s1,s2):
returns1ins2后知后觉了,惭愧;-)
类似的,假设要在字符串中,查找多个子串是否存在源码天空
,并打印出这些串和首次出现的位置:
deffindSubstrings(substrings,destString):res=map(lambdax:str([destString.index(x),x]),filter
(lambdax:xindestString,substrings))ifres:return','.join(list(res));-)verycool~UPDATE:
如果你不习惯最后面这种看起来很复杂的语法也没关系,可以使用列表解析,更加简洁:
deffindSubstrings(substrings,destString):return','.join
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