The size is calculated as the sum of the numbers in the partition associated to the tableau
i1 : y = youngTableau(new Partition from {2,1,1,1},{2,0,1,4,3})
o1 = | 2 0 |
| 1 |
| 4 |
| 3 |
o1 : YoungTableau
|
i2 : size y o2 = 5 |