Created
May 27, 2025 23:46
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Given two arrays, return all pairs (where each number is in each array) whose sum is an odd number.
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import gleam/list | |
import gleam/result | |
pub fn oddsum(arr1, arr2) { | |
list.map(arr1, fn(a) { | |
list.map(arr2, fn(b) { [a, b]})}) |> list.flatten |> list.map(fn(x){ | |
case {{result.unwrap(list.first(x), 0) + result.unwrap(list.last(x), 0)} % 2} { | |
1 -> x | |
_ -> [] | |
} | |
}) |> list.filter(fn(y){list.length(y) > 1}) | |
} | |
pub fn main() { | |
oddsum([9, 14, 6, 2, 11], [8, 4, 7, 20])|> echo | |
oddsum([10, 12, 14, 18, 20], [2, 4, 6, 8])|> echo | |
} |
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src/main.gleam:15 | |
[[9, 8], [9, 4], [9, 20], [14, 7], [6, 7], [2, 7], [11, 8], [11, 4], [11, 20]] | |
src/main.gleam:16 | |
[] |
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