Why "The Last Olympian" and "The Outsiders" novels are similar

In the two literature pieces The Last Olympian by Rick Riordan and The Outsiders by S.E. Hinton both share major plot development factors. For instance, in both novels there is a clear perspective on whose side the reader should be on. Although, it is way more clear in The Last Olympian than in The Outsiders because in the Percy Jackson book one side is a savage group of Titan’s and whatever people they can muster while the other is a minuscule group of demigods who would never intentionally kill a soul if they had the choice. On the other side of the fence, both the greasers and the Socs have done horrid deeds. The two major factors that bring the reader onto the greasers side is the plain fact the Socs have so much more money than the greasers and the reader is following the perspective of Ponyboy Curtis, a greaser. Also, greasers and Socs both kill each other either jumping one another via spotting a lone rival gang member or getting tangled in nasty street fights. Nevertheless, both stories have a clear cut Good vs. Evil theme going on! In conclusion, both novels prove to be more similar than can usually be suspected of a Greek mythology book and a “West Side Vs East End” kind of literature.