Change the implementation of std::find_first_of.h to use any_of #129319

Author: aliraeisdanaei

libcxx/include/__algorithm/find_first_of.h

@@ -26,11 +26,9 @@ _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator1 __find_fir
     _ForwardIterator2 __first2,
     _ForwardIterator2 __last2,
     _BinaryPredicate&& __pred) {
-  for (; __first1 != __last1; ++__first1)
-    for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
-      if (__pred(*__first1, *__j))
-        return __first1;
-  return __last1;
+  return std::find_if(first1, last1, [&](const auto& x) {
+    return std::any_of(first2, last2, [&](const auto& y) { return x == y; });
+  });
 }
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>