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kotlinlang

I have a list of Prizes.

Each Prize has like 5 properties... but if Prize.redeemed = 100... I want to sort those only to the back of the list. So I don't want to sort by redeemed... I just want to put those in the back of the list. How would I do that?

I have this... and I'm kinda not sure why it works. I would have thought it would have put these to the front?
`prizes.sortedWith(compareBy { it.redeemed == 100 })`

```compareBy { it.redeemed == 100 }.compare(a, b)```
is
```naturalOrder&lt;Boolean&gt;().compare(a.redeemed == 100, b.redeemed == 100)```

the natural order of booleans is `false &lt; true`

in any case, sort is O(n log n) while
```val (redeemed100, redeemedNot1000) = prizes.partition { it.redeemed == 100 }```
is O(n)