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Classic Computer Science Problems in Swift.playground/Pages
- Chapter 1.xcplaygroundpage
  - Contents.swift
- Chapter 2.xcplaygroundpage
  - Contents.swift

-8

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Lines changed: 3 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -167,9 +167,9 @@ func calculatePi(nTerms: UInt) -> Double {`
`167`	`167`	`var operation: Double = -1`
`168`	`168`	`var pi: Double = 0`
`169`	`169`	`for _ in 0..<nTerms {`
`170`		`- pi = pi + operation * (numerator / denominator)`
	`170`	`+ pi += operation * (numerator / denominator)`
`171`	`171`	`denominator += 2`
`172`		`- operation = operation * -1`
	`172`	`+ operation *= -1`
`173`	`173`	`}`
`174`	`174`	`return abs(pi)`
`175`	`175`	`}`
`@@ -179,7 +179,7 @@ calculatePi(nTerms: 1000)`
`179`	`179`
`180`	`180`	`/// The Towers of Hanoi`
`181`	`181`
`182`		`-/// Implements a stack - helper class that uses an array internally.`
	`182`	`+/// Implements a stack - LIFO helper class that uses an array internally.`
`183`	`183`	`public class Stack<T>: CustomStringConvertible {`
`184`	`184`	`private var container: [T] = [T]()`
`185`	`185`	`public func push(_ thing: T) { container.append(thing) }`

Lines changed: 1 addition & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -102,7 +102,7 @@ for _ in 0..<1000 {`
`102`	`102`	`}`
`103`	`103`	`let elapsedTime2 = CFAbsoluteTimeGetCurrent() - startTime2*/`
`104`	`104`
`105`		`-//generic versions for dictionary`
	`105`	`+/// Generic Versions`
`106`	`106`
`107`	`107`	`func linearContains<T: Equatable>(_ array: [T], item: T) -> Bool {`
`108`	`108`	`for element in array where item == element {`
`@@ -111,10 +111,6 @@ func linearContains<T: Equatable>(_ array: [T], item: T) -> Bool {`
`111`	`111`	`return false`
`112`	`112`	`}`
`113`	`113`
`114`		`-//linearContains(gene, item: ac1)`
`115`		`-`
`116`		`-gene.sort(by: <)`
`117`		`-`
`118`	`114`	`func binaryContains<T: Comparable>(_ array: [T], item: T) -> Bool {`
`119`	`115`	`var low = 0`
`120`	`116`	`var high = array.count - 1`

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