|
1 | | -/*! |
| 1 | +/*! |
2 | 2 | * @author electricessence / https://github.com/electricessence/ |
3 | 3 | * Licensing: MIT https://github.com/electricessence/Genetic-Algorithm-Platform/blob/master/LICENSE.md |
4 | 4 | */ |
5 | 5 |
|
| 6 | +using Open.Collections; |
6 | 7 | using System; |
7 | 8 | using System.Collections.Generic; |
8 | 9 | using System.Linq; |
9 | 10 | using System.Threading; |
10 | | -using Open.Collections; |
11 | 11 |
|
12 | 12 | namespace Open.Arithmetic |
13 | 13 | { |
14 | 14 |
|
15 | | - public static class Triangular |
16 | | - { |
| 15 | + public static class Triangular |
| 16 | + { |
17 | 17 |
|
18 | | - public static uint Forward(uint n) |
19 | | - { |
20 | | - return n * (n + 1) / 2; |
21 | | - } |
| 18 | + public static uint Forward(uint n) |
| 19 | + { |
| 20 | + return n * (n + 1) / 2; |
| 21 | + } |
22 | 22 |
|
23 | 23 |
|
24 | | - public static uint Reverse(uint n) |
25 | | - { |
26 | | - return (uint)(Math.Sqrt(8 * n + 1) - 1) / 2; |
27 | | - } |
| 24 | + public static uint Reverse(uint n) |
| 25 | + { |
| 26 | + return (uint)(Math.Sqrt(8 * n + 1) - 1) / 2; |
| 27 | + } |
28 | 28 |
|
29 | | - public static class Disperse |
30 | | - { |
| 29 | + public static class Disperse |
| 30 | + { |
31 | 31 |
|
32 | | - /** |
| 32 | + /** |
33 | 33 | * Increases the number an element based on it's index. |
34 | 34 | * @param source |
35 | 35 | * @returns {Enumerable<T>} |
36 | 36 | */ |
37 | | - public static IEnumerable<T> Increasing<T>(IEnumerable<T> source) |
38 | | - { |
39 | | - int i = 0; |
40 | | - return source.SelectMany( |
41 | | - c => Enumerable.Repeat(c, Interlocked.Increment(ref i))); |
42 | | - } |
43 | | - |
44 | | - /** |
| 37 | + public static IEnumerable<T> Increasing<T>(IEnumerable<T> source) |
| 38 | + { |
| 39 | + int i = 0; |
| 40 | + return source.SelectMany( |
| 41 | + c => Enumerable.Repeat(c, Interlocked.Increment(ref i))); |
| 42 | + } |
| 43 | + |
| 44 | + /** |
45 | 45 | * Increases the count of each element for each index. |
46 | 46 | * @param source |
47 | 47 | * @returns {Enumerable<T>} |
48 | 48 | */ |
49 | | - public static IEnumerable<T> Decreasing<T>(IEnumerable<T> source) |
50 | | - { |
51 | | - var s = source.Memoize(); |
52 | | - int i = 0; |
53 | | - return s.SelectMany( |
54 | | - c => s.Take(Interlocked.Increment(ref i))); |
55 | | - } |
56 | | - } |
57 | | - } |
| 49 | + public static IEnumerable<T> Decreasing<T>(IEnumerable<T> source) |
| 50 | + { |
| 51 | + var s = source.Memoize(); |
| 52 | + int i = 0; |
| 53 | + return s.SelectMany( |
| 54 | + c => s.Take(Interlocked.Increment(ref i))); |
| 55 | + } |
| 56 | + } |
| 57 | + } |
58 | 58 |
|
59 | 59 | } |
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