int number =0;
int rnd;
double constant n=100;//n is given
double given[100];
//given is the array given to you
for(int i=0;i<1000;i=++)
//u may set i<500 or any number
swap(given(randam(n),given(randam(n));
}
int rnd;
double constant n=100;//n is given
double given[100];
//given is the array given to you
for(int i=0;i<1000;i=++)
//u may set i<500 or any number
swap(given(randam(n),given(randam(n));
}