defis_Sublist(l,s):sub_set=Falseifs==[]:sub_set=Trueelifs==l:sub_set=Trueeliflen(s)>len(l):sub_set=Falseelse:foriinrange(len(l)):ifl[i]==s[0]:n=1while(...

 defis_Power_of_three(n):while(n%3==0):n/=3;returnn==1;print(is_Power_of_three(9))print(is_Power_of_three(81))print(is_Power_of_three(21)) ...

 defis_Power_of_four(n):whilenandnot(n&0b11):n>>=2return(n==1)print(is_Power_of_four(4))print(is_Power_of_four(16))print(is_Power_of_four(255))&n...

importredefend_num(string):#以一个数字结尾字符串text=re.compile(r".*[0-9]$")iftext.match(string):returnTrueelse:returnFalseprint(end_num('abcdef'))print(end_num('abcdef6'...

分析以下需求，并用代码实现1.利用键盘录入，输入一个字符串2.统计该字符串中各个字符的数量(提示:字符不用排序)3.如：用户输入字符串"If~you-want~to~change-your_fate_I_think~you~must~come-to-the-dark-horse-to-learn-java"程序输出结果...

typeof:使用typeof可以很方便的判断六种类型:undefined、boolean、string、number、object、function数组和null会被判断为object类型instanceof:instanceof判断对象是某类型的实例,他可以很方便的判断出数组和null,但是也有不足，　　1：在多个...

 #!/bin/basha=""if[-n"$a"]thenecho"-n$a:字符串长度不为0"elseecho"-n$a:字符串长度为0"fi输出结果为：-n:字符串长度为0...

 publicclassNumeric{publicstaticvoidmain(String[]args){Stringstring="-1234.15";booleannumeric=true;numeric=string.matches("-?\d+(\.\d+)?");if(numeric)Syste...

 #include<iostream>//cout#include<algorithm>//is_heap,make_heap,pop_heap#include<vector>//vectorusingnamespacestd;intmain(){vector<int...

 #include<iostream>//cout#include<algorithm>//includes,sortusingnamespacestd;boolmyfunction(inti,intj){returni<j;}intmain(){intcontainer[]={...

 #include<iostream>//cout#include<algorithm>//equal#include<vector>//vectorusingnamespacestd;boolmypredicate(inti,intj){return(i==j);}int...

 #include<iostream>//std::cout#include<algorithm>//std::any_of#include<array>//std::arrayusingnamespacestd;intmain(){array<int,7>fo...

 #include<iostream>//std::cout#include<algorithm>//std::all_of#include<array>//std::arrayusingnamespacestd;intmain(){array<int,8>fo...

importjava.util.Scanner;//判断一个素数能被几个9整除publicclassTest{publicstaticvoidmain(String[]args){System.out.print("请输入一个数：");Scannerscan=newScanner(System.in);longl=sc...

mportjava.util.Scanner;//请输入星期几的第一个字母来判断一下是星期几，如果第一个字母一样，则继续判断第二个字母。//Mon.Tues.Wed.Thurs.friSat.Sun.publicclassTest{publicstaticvoidmain(String[]args){Scannersc...