func demoSimplePrintTable() {
    let rowLabels = [
        "row 1",
        "row 2",
        "row 3 looooong"
    ]
    let columnLabels = [
        "column 1 loooong",
        "column 2",
        "column 3"
    ]
    let data = [
        [100, 20, 30],
        [1, 5, 10],
        [1000, 4, 200000000]
    ]

    printTable(rl : rowLabels, cl : columnLabels, data : data)
}
func printTable(rl : [String], cl : [String], data : [[Int]]) {

    for (i, clabel) in cl.enumerated(){
        if i < 1 {
            print("rien | ", terminator:"")
        }
        print (clabel + " | ", terminator:"")
    }

    print("")

    for (j,rlabel) in rl.enumerated() {
        print(rlabel, terminator:" | ");
            for x in data[j] {
                print(x, terminator:" | ")
            }
        print("")
    }
}

demoSimplePrintTable()