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struct BigInt { | |
var value: String | |
} |
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func multiply(left: String, right: String) -> String { | |
var leftCharacterArray = left.characters.reversed().map { Int(String($0))! } | |
var rightCharacterArray = right.characters.reversed().map { Int(String($0))! } | |
var result = [Int](repeating: 0, count: leftCharacterArray.count+rightCharacterArray.count) | |
for leftIndex in 0..<leftCharacterArray.count { | |
for rightIndex in 0..<rightCharacterArray.count { | |
let resultIndex = leftIndex + rightIndex | |
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let int1 = BigInt("10") | |
let int2 = BigInt("5") | |
let product = int1 * int2 |
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struct BigInt { | |
var value: String | |
func multiply(right: String) -> String { | |
// We'll change this line to use `value` | |
var leftCharacterArray = value.characters.reversed().map { Int(String($0))! } | |
var rightCharacterArray = right.characters.reversed().map { Int(String($0))! } | |
... |
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func multiply(right: BigInt) -> BigInt { | |
var a1 = value.characters.reversed().map { Int(String($0))! } | |
var a2 = right.value.characters.reversed().map { Int(String($0))! } | |
... | |
... | |
// And change the last line | |
return BigInt(value: result.map { String($0) }.joined(separator: "")) | |
} |
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func * (left: BigInt, right: BigInt) -> BigInt { return left.multiply(right) } |
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import UIKit | |
import Foundation | |
struct BigInt { | |
var value: String | |
func multiply(right: BigInt) -> BigInt { | |
var leftCharacterArray = value.characters.reversed().map { Int(String($0))! } | |
var rightCharacterArray = right.value.characters.reversed().map { Int(String($0))! } |
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let int1 = BigInt(value: "34757377374573285823949593499549646311234") | |
let int2 = BigInt(value: "45123498348958923845838948528381283721377123454345") | |
let product = int1 * int2 | |
// result: 1568374460575699918065222772187576926314538959488859994856690985365041943440429553059611730 |
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class MockSession: URLSession { | |
var completionHandler: ((Data, URLResponse, Error) -> Void)? | |
static var mockResponse: (data: Data?, URLResponse: URLResponse?, error: Error?) | |
override class var shared: URLSession { | |
return MockSession() | |
} | |
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class MockTask: URLSessionDataTask { | |
typealias Response = (data: Data?, URLResponse: URLResponse?, error: Error?) | |
var mockResponse: Response | |
let completionHandler: ((Data?, URLResponse?, Error?) -> Void)? | |
init(response: Response, completionHandler: ((Data?, URLResponse?, Error?) -> Void)?) { | |
self.mockResponse = response | |
self.completionHandler = completionHandler | |
} |
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