Question

How to convert a specific column of a decimal matrix to a string in Swift

Answer 1

import Foundation

func convertColumnToString(matrix: [[Int]], col: Int) -> String {
    return matrix.map { String($0[col]) }.joined(separator: " ")
}

let matrix = [
    [4, 7, 9, 18, 29, 0],
    [1, 9, 18, 99, 4, 3],
    [9, 17, 89, 2, 7, 5],
    [19, 49, 6, 1, 9, 8],
    [29, 4, 7, 9, 18, 6]
]

let col = 3
let result = convertColumnToString(matrix: matrix, col: col)

print(result)



/*
run:

18 99 2 1 9

*/

 

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