Question

How to convert a matrix of numbers to a string without row separation (flattening the matrix) in Swift

Answer 1

import Foundation

let matrix = [
    [ 4,  7,  9, 18, 29, 1],
    [ 1,  9, 18, 99,  4, 7],
    [ 9, 17, 89,  2,  7, 9],
    [19, 49,  6,  1,  9, 0],
    [29,  4,  7,  9, 18, 6]]
    
let matrixString = matrix.flatMap{ $0 }.map(String.init).joined(separator: ", ")

print(matrixString)



/*
run:

4, 7, 9, 18, 29, 1, 1, 9, 18, 99, 4, 7, 9, 17, 89, 2, 7, 9, 19, 49, 6, 1, 9, 0, 29, 4, 7, 9, 18, 6

*/

 

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