I have a really specified problem to deal with. I need to descending sort an array[4][x]. 
From instance if i get values like:

```
{121,120,203,240}
{0.5,0.2,3.2,1.4}
{1.3,1.5,1.2,1.8}
{3  ,2  ,5  ,4  }

```

**All values have to bo sorted by the 4th row**. Thus, I need an output like this:

```
{203,240,121,120}
{3.2,1.4,0.5,0.2}
{1.2,1.8,1.3,1.5}
{5  ,4  ,3  ,2  }

```

I have tried doing it by the bubble sort method, but it does not work properly.