Y permutation algorithm
PLL (permute the last layer). Group: Corners and edges.
Y permutation: the top face is yellow all over. The algorithm swaps the front-right corner and the back-left corner, and swaps the left edge and the back edge.
The diagram shows the cube from above with the front at the bottom and yellow on top.
Algorithm
F R U' R' U' R U R' F' R U R' U' R' F R F'
17 moves.
Other algorithms
F R' F R2 U' R' U' R U R' F' R U R' U' F'R2 U' R2 U' R2 U F U F' R2 F U' F'F R' F' R U R U' R2 U' R U R f' U' f
Source: www.speedsolving.com