Using rust how can I convert a 2d array into a 2d vector?

Question

Given a 2d array such as

let S = [
        [0,0,1,0,0],
        [0,0,1,0,0],
        [0,0,1,0,0],
        [0,0,1,0,0]];

How can I convert it into a 2d Vector?

Vec<Vec<i32>>

Answer 1

2d array is array of array s, so to create 2d Vector you need to create Vec of Vec s. One way to do that is to iterate over the array and convert every item using to_vec() method, then collect() to Vec .

let s: Vec<_> = s.iter().map(|&e| e.to_vec()).collect();