Swift create one Int array from two int arrays by taking the max() at each index

Question

I feel like this may call for reduce, map or something like it to solve but I'm not yet familiar enough with these and was hoping someone here might be. Lets say I have

arrayOne = [1, 3, 7] arrayTwo = [2, 1, 10]

the expected result for what I'm trying to do would be

mergedArray = [2, 3, 10]

I know I can do this with a relatively simple for loop in a method but I am looking for a more "swift" way to do it if it's possible.

And Yes, both arrays will always be the same length.

OOPer · Accepted Answer · 2016-07-02 23:51:32Z

6

This will work:

let arrayOne = [1, 3, 7]
let arrayTwo = [2, 1, 10]

let mergedArray = zip(arrayOne, arrayTwo).map{max($0, $1)}

First, pair each element in two arrays with zip, and then use map to each pair.

answered Jul 2, 2016 at 23:51

OOPer

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1 Comment

Luca Angeletti Over a year ago

Even shorter: zip(arrayOne, arrayTwo).map(max)

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