Pascal's triangle Mission

Pascal's triangle.swift

//
//  main.swift
//  Misson
//
//  Created by woowabrothers on 2017. 7. 10..
//  Copyright © 2017년 woowabrothers. All rights reserved.
//

import Foundation

print("Hello, World!")
func makePascalTriangle(numOfRows : Int) -> ([[Int]]) {
    if numOfRows == 0 {
        return []
    }
    var wholeArray = [[1]]
    for i in 1..<numOfRows {
        wholeArray.append([1])
        for j in 1..<i {
            wholeArray[i].append(wholeArray[i-1][j-1] + wholeArray[i-1][j])
        }
        wholeArray[i].append(1)
    }
    return wholeArray
}

for arg in CommandLine.arguments {
    
    if let num = Int(arg) {
        let resultValue = makePascalTriangle(numOfRows: num)
        
        for value in resultValue {
            print(value, terminator : " ")
        }
    }
    
}