add quick quiz on array size

lectures/complexity/slides.qmd

@@ -26,6 +26,23 @@ Amount of resources needed for algorithms working on data structures
  - Memory required to run an algorithm with given data size
 
 
+## Quiz {.special auto-animate=true}
+
+How many bytes are in a `double` temparature array<br/>on a `0.1°` x `0.1°` lat-lon grid and `100` vertical model levels,<br/>containing hourly data for one day?
+
+## Quiz {.special auto-animate=true}
+
+How many bytes are in a `double` temparature array<br/>of `3600` x `1800` x `100` x `24` elements?
+
+::: {.fragment}
+`12441600000` or `12 GB`
+:::
+
+::: {.fragment .smaller}
+(± overhead & compression)
+:::
+
+
 ## Big-$\mathcal{O}$ Notation {auto-animate=true}
 
  - growth in relation to input data size $n$