Sort an Alphanumeric 2D Array Numerically

Question

I just required some help with my Python code which I am trying to create. This sorts a '2D Array' which contains both Numbers and Letters (Alphanumeric) to be sorted Numerically. So I have the below Array:

Array = (['Apple',1],['Banana',8],['Grape',120],['Pineapple',80])

And I was looking for an output which would sort numerically highest - lowest, for example I need the below output or similar:

(['Grape',120],['Pineapple',80],['Banana',8],['Apple',1])

Or something like this

Grape, 120
Pineapple, 80
Banana, 8
Apple, 1

score 1 · Answer 1 · answered Apr 21 '16 at 16:40

1

Use the built in sorted operation:

sorted(Array, key=lambda x: x[1], reverse=True)

answered Apr 21 '16 at 16:40

dlshriver

156
1
15

Just tried it and this works, thank you so much! Does the Lambda key do, if you don't mind me asking? – DW_0505 Apr 21 '16 at 16:44
@DW_0505, you look at the dupe, you should probably also use itemgetter not a lambda – Padraic Cunningham Apr 21 '16 at 16:45
@PadraicCunningham May I ask you what do you mean?(_you look at the dupe,_) – EbraHim Apr 21 '16 at 16:46
@EbraHim, the duplicate question. – Padraic Cunningham Apr 21 '16 at 16:47
It is explained in the duplicate question, but the key argument just takes a function that transforms the item for comparison. In this case we just take the second element of the list (index 1). lambda just creates an anonymous function that takes some number of arguments (1 in this case: x), and returns some output (x[1] in this case). – dlshriver Apr 21 '16 at 16:48
@Jggrnaut Okay thanks – DW_0505 Apr 21 '16 at 16:52

Sort an Alphanumeric 2D Array Numerically

1 Answers1