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828eb68e72
There's still work left to do. In terms of next steps, there's still rdar://problem/22126141, which covers removing the 'workaround' overloads for print (that prevent bogus overload resolution failures), as well as providing a decent diagnostic when users invoke print with 'appendNewline'. Swift SVN r30976
44 lines
1.5 KiB
Swift
44 lines
1.5 KiB
Swift
// RUN: %target-run-simple-swift | FileCheck %s
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// REQUIRES: executable_test
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// From http://rosettacode.org/wiki/Factorial
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func factorial(x: Int) -> Int {
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if (x == 0) { return 1 }
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return x * factorial(x-1)
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}
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// From http://rosettacode.org/wiki/Towers_of_Hanoi
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func TowersOfHanoi(ndisks: Int, from: Int, to: Int, via: Int) -> Void {
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if (ndisks == 1) {
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print("Move disk from pole \(from) to pole \(to)\n", terminator: "")
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}
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else {
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TowersOfHanoi(ndisks-1, from: from, to: via, via: to);
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TowersOfHanoi(1, from: from, to: to, via: via);
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TowersOfHanoi(ndisks-1, from: via, to: to, via: from);
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}
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}
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// Driver code.
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print("Factorial of 10 = \(factorial(10))\n\n", terminator: "")
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print("Towers of Hanoi, 4 disks\n", terminator: "")
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TowersOfHanoi(4, from: 1, to: 2, via: 3)
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// CHECK: Factorial of 10 = 3628800
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// CHECK: Towers of Hanoi, 4 disks
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// CHECK-NEXT: Move disk from pole 1 to pole 3
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// CHECK-NEXT: Move disk from pole 1 to pole 2
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// CHECK-NEXT: Move disk from pole 3 to pole 2
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// CHECK-NEXT: Move disk from pole 1 to pole 3
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// CHECK-NEXT: Move disk from pole 2 to pole 1
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// CHECK-NEXT: Move disk from pole 2 to pole 3
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// CHECK-NEXT: Move disk from pole 1 to pole 3
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// CHECK-NEXT: Move disk from pole 1 to pole 2
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// CHECK-NEXT: Move disk from pole 3 to pole 2
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// CHECK-NEXT: Move disk from pole 3 to pole 1
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// CHECK-NEXT: Move disk from pole 2 to pole 1
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// CHECK-NEXT: Move disk from pole 3 to pole 2
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// CHECK-NEXT: Move disk from pole 1 to pole 3
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// CHECK-NEXT: Move disk from pole 1 to pole 2
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// CHECK-NEXT: Move disk from pole 3 to pole 2
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