Post on 08-Jan-2016
description
- , int data[4];
0 data[0]=1;data[1]=2;data[2]=3;data[3]=4;
double v[3]={0.3, 2.2, 2.}; char symbols[]={'a', 'b', 'c', 'd', 'e'};
double *data; // data=new double[1000]; // 0-
// for(int i=0; i
,
// + double sum(double* m, int n) // double m[] { double s=0.; for(int i=0; i
double matrix[3][2]; // 23
double sum=0.;for(int i=0; i
, [i][j], , , [1][0] [2]
// matrix[3][2]double *matrix=new double[3*2];
// matrix[i][j]matrix[i*2+j]=0.;
// matrix[1][0]matrix[1*2+0]=0.;
delete [] matrix; // .
, , , , , ,
( )
STL (Standard Template Library) : (vector, deque, list); (set, multiset, map, multimap); , , (, queue, stack) , - ,
: , ,
,
,
: , ,
- "." . 4 5.4.
#include using namespace std;
vector x; // x.resize(10); // x.resize(x.size()+100); //
double sum=0.0;for(int i=0; i
( ) int n=x.size(); x.resize(100); x[i]=5; x.push_back(7); bool res=x.empty(); // x.size() == 0 x.clear(); - x.reserve(200); - , .int n=x.capacity();
. 5.
, (Node) , ,
STL
list example;
example.push_back(0); // example.push_front(1); // x.insert(x.begin(), 3); //
( )
"" , list ls;list::iterator it;
* (*it)=5;
++ it++, it--
it=ls.begin()
it=ls.end()
list x;
list::iterator it;for(it=x.begin(); it!=x.end(); it++){ sum+=(*it); // }
it=x.begin();while(it!=x.end()){ sum+=*it; it++;}
.
(deque) , : ( vector) : - capacity() reserve() .
(stack) , "last in, first out" (LIFO) , (top)
stack s;
s.push(8); // s = 8s.push(7); // s = 7 8s.push(4); // s = 4 7 8
cout
(queue) , "first in, first out" (FIFO) , (front)
queue q;
q.push(8); // q = 8q.push(7); // q = 7 8q.push(4); // q = 4 7 8
cout
- "-" ("key-value"), pair
STLmap , multimap set multiset
map map glass;double n=glass["K8"]; , (0)glass["K8"]=1.5; ,
( pair) (pair::first) (pair::second) : map::iterator it;for(it=glass.begin(); it!=glass.end(); it++){ cout
set
set glass;map::iterator it;
glass.insert("K8");glass.insert("K14");glass.insert("K8");
for(it=glass.begin(); it!=glass.end(); it++){ cout
#include using namespace std;
list x;
// list::iterator it;for(it=x.begin(); it!=x.end(); it++){ sum+=(*it); }
// sum=accumulate(x.begin(), x.end(), 0.0);
list ls;
list::const_iterator it;// "8" ls.begin() ls.end()it=find(ls.begin(), ls.end(), "8");
, ,
vector v(100);
// ls.begin() ls.end() // 0fill(v.begin(), v.end(), 0);// ls.begin() ls.end(), // -1 1replace(v.begin(), v.end(), -1, 1);
, , , ,
vector v(100);
// sort(v.begin(), v.end());// reverse(v.begin(), v.end());
-- ( )
vector v(100);vector::iterator it=v.begin();
it++;swap(*v.begin(), *it);
#include accumulate - ( )inner_product - ( ) partial_sum - (a, a+b, a+b+c, a+b+c+d, ...)adjacent_difference - (a, b-a, c-b-a, d-c-b-a, ...).