Merge Sort Test.swift

import Foundation
import Swift

extension Int {
	public func pow(exp: Int) -> Int {
		return (0..<exp).reduce(1) { (acc, _) in
			return acc * self
		}
	}
}

extension Array {
	func split(pieces: Int) -> [ArraySlice<Element>] {
		let ratio = count / pieces
		var a = [ArraySlice<Element>]()
		
		for num in startIndex.stride(to: count, by: ratio) {
			a.append(self[num..<min(num + ratio, count)])
		}

		return a
	}
}

print([1, 2, 3, 4, 5, 6, 7].split(3).reverse())