# NP Complete

A problem is NP-complete if it is both NP and NP-hard. NP-complete problems are the hard problems in NP.

Visit the following resources to learn more:

- [@article@Trying to understand P vs NP vs NP Complete vs NP Hard](https://softwareengineering.stackexchange.com/questions/308178/trying-to-understand-p-vs-np-vs-np-complete-vs-np-hard)
- [@video@Complexity: P, NP, NP-completeness, Reductions](https://www.youtube.com/watch?v=eHZifpgyH_4&list=PLUl4u3cNGP6317WaSNfmCvGym2ucw3oGp&index=22)
- [@video@P vs. NP and the Computational Complexity Zoo](https://www.youtube.com/watch?v=YX40hbAHx3s)
- [@video@Greedy Algs. II & Intro to NP Completeness](https://youtu.be/qcGnJ47Smlo?list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm&t=2939)
- [@video@NP Completeness II & Reductions](https://www.youtube.com/watch?v=e0tGC6ZQdQE&index=16&list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm)
- [@video@NP Completeness III](https://www.youtube.com/watch?v=fCX1BGT3wjE&index=17&list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm)
- [@video@NP Completeness IV](https://www.youtube.com/watch?v=NKLDp3Rch3M&list=PLFDnELG9dpVxQCxuD-9BSy2E7BWY3t5Sm&index=18)