Marco marcoconti83
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| /** | |
| # QUESTION | |
| Is there a way to combine `guard` and `try-catch`, so that we can | |
| exploit the `guard let` to have a immutable value, but have an early | |
| return in case of errors? | |
| */ |
marcoconti83
/ Collections+Clusters.swift
Created
October 28, 2015 08:25
A function to group a collection into clusters of equal size
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| enum CollectionClusteringError : ErrorType { | |
| case SizeIsNotMultipleOfClusterSize | |
| } | |
| extension CollectionType where Index.Distance == Int, Index == Int { | |
| /** | |
| Returns an array of elements from the collection grouped in clusters of the given size, | |
| grouped according to the original order in the collection |
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| public func p004()->Int { | |
| // 999 * 993 = 992007 sum: 1992 | |
| // 998 * 994 = 992012 sum: 1992 | |
| // 997 * 995 = 992015 sum: 1992 | |
| // 996 * 996 = 992016 sum: 1992 | |
| // 999 * 994 = 993006 sum: 1993 | |
| // 998 * 995 = 993010 sum: 1993 | |
| // 997 * 996 = 993012 sum: 1993 | |
| // 999 * 995 = 994005 sum: 1994 |