Big O Notation is used to denote the complexity of the algorithm ( worst case complexity)...

for example
the following code has complexity O(n)


for(int i=1;i<=n; ++i )
{
// do...

Thank You ~S.o.S~ & Ancient Dragon for your help finally i learn how to calculate the polynomial complexity.....


for( int i=0; i<n; ++i )
for( int j=0; j<i; ++j )
...

i want to calculate the complexity of the following code snippet


for(int k=0;k<n; ++k)
for(int j=0; j<k; ++j)
for(int i=0; i<j; ++i)
cout<< "Hello World"...

You can get the effect of Virtual Constructor by using Factory design pattern...... which doesn't violates the objected oriented rules specifically inheritance structure........ but its helpful. and...

The problem you've described might consists of pair of key value... using pair< T1,T2> template is agood choice .....then.

I totally agree with salem, every Data Structure has some advantages...

Amazing Article :). Thanks from my side :).

I've gone through several books they explain Upcasting as
Base class pointer pointing to Drived class Object

this definition is correct.
Downcasting:


i got a bit confused.....not...

Sorry for late replying! was busy! hmmmZ. sending you a snippet of code that might help you :). concentrate on the technique of reading and writing to file you can Edit any record ~!.Check the...

Swapping two variables is an easy stuff if you are using temporary variable


void swap(int& a,int& b)
{
int temp=a;
a=b;
b=temp;
}

Pointer to function are the pointers which have the ability to call the function pointed to by them.As the ordinary pointers take the address of variable and can change the value pointed by them, the...

Editing is a trick in File based databases.........you can use several ways to achieve this....

1. Use the array of Structure and read the entire file in array of structure.......... and do...

Inheritance simply means Reusing the Interface of the base class. Two classes have something in common for example consider the following example. There are two classess Shape(a base/parent class) ...