please explain....the code
#include<string>
using namespace std;
int main()
{
int x=0;
string str;
cin>>str;//only lowercase
for(int i=0;i<str.size();i++) x^=(1<<(str[i]-97));
if(str.size()&1)
{ if(!(x&(x-1)))cout<<"Palindrome\n";
else cout<<"Not palindrome\n";
}
else
{ if(!x)cout<<"Palindrome\n";
else cout<<"Not palindrome\n";
}
}
i could not understand the algo
On Jul 26, 11:07 am, Anika Jain <anika.jai...@gmail.com> wrote:
> int palin(char *p)
> {
> int x=0;
> while(*p)
> {
> x^=1<<(*p-'a');
> p++;
> }
> int i=0,count=0;
> while(i<26)
> {
> count+=(1<<i & x)>>i;
> i++;
> }
> if(count>1)
> return 0;
> else
> return 1;
>
>
>
>
>
>
>
> }
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