STL之string,vector,algorithm常用方法

#include < iostream >

#include < string >

#include < vector >

#include < algorithm >

using namespace std;

void testString()

... {

strings="abc",t="cde";

cout<<s+t<<endl;

s=s+'1';

cout<<s<<""<<s.size()<<endl;

cin>>s>>t;

intj=s.find(t);

if(j!=-1)

cout<<j<<endl;

else

cout<<"nofound ";

cin>>s>>t;

if(s==t)

cout<<"equal ";

elseif(s>t)

cout<<"large ";

else

cout<<"small ";

s="abcdefg";//getline(cin,s);

intk=s.find("");

if(k!=-1)

cout<<s.substr(0,k)<<""<<s.substr(k+1)<<endl;

}

void prtVector(vector < int > v)

... {

for(inti=0;i<v.size();i++)

cout<<""<<v[i];

cout<<endl;

}

bool cmp( int a, int b)

... {

returna>b;

}

void testVector()

... {

intn;

cin>>n;

vector<int>v(n);

inti;

for(i=0;i<v.size();i++)cin>>v[i];

sort(v.begin(),v.end());//sort,smalltolarge

prtVector(v);

sort(v.begin(),v.end(),cmp);//sort,largetosmall

prtVector(v);

reverse(v.begin(),v.end());//reverse

prtVector(v);

fill(v.begin(),v.end(),0);//fill

prtVector(v);

intx=1,y=2;

swap(x,y);//swap

cout<<x<<""<<y<<endl;

vector<vector<int>>tv;

intr,c;

cin>>r>>c;

tv.resize(r);

for(i=0;i<r;i++)

...{

tv[i].resize(c);

for(intj=0;j<tv[i].size();j++)

cin>>tv[i][j];

}

for(i=0;i<r;i++)

...{

for(intj=0;j<tv[i].size();j++)

cout<<""<<tv[i][j];

cout<<endl;

}

tv.clear();

}

void run() ... {

cout<<"teststring ";

testString();

cout<<" testvectorandalgorithm ";

testVector();

}

int main() ... {

run();

return0;

}