1. Finding out if a sequence is palindromic
bool isPalindrome(string s)
{
return equal( s.begin(), s.end(), s.rbegin() );
}
2. Eliminating consecutive duplicates in a sequence
void eliminate(string& s)
{
s.resize( unique(s.begin(), s.end()) - s.begin() );
}
3. Counting the number of bits in an integer
int bitCount(int x)
{
return __builtin_popcount(x);
}
4. Finding the GCD of two integers
int gcd(int x, int y)
{
return __gcd(x, y);
}
5. Summing up all elements in a sequence
int sum(vector<int> v)
{
return accumulate(v.begin(), v.end(), 0);
}
