回答編集履歴
1
問題の解釈相違
test
CHANGED
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@@ -35,3 +35,61 @@
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35
35
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06/01,08/08
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36
36
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37
37
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```
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38
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39
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40
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41
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追記：
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42
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43
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問題を読み誤っていたかも。こういうことか？
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44
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45
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```lang-Ruby
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46
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47
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GANTAN = Time.mktime(2015,1,1)
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48
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49
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days = (0...365).map { |i| GANTAN + i*24*3600 }
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50
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51
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52
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53
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days.repeated_combination(2) do |x,y|
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54
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55
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z1 = days[(x.yday+y.yday)%365-1]
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56
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57
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z2 = Rational(x.mon,x.day)+Rational(y.mon,y.day)
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58
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59
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if z1.mon == z2.numerator and z1.day == z2.denominator
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60
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61
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puts [x.strftime("%m/%d"),y.strftime("%m/%d")].join(",")
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62
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63
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end
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64
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65
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end
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66
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67
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#=>
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68
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69
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01/28,02/28
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70
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71
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01/30,06/30
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72
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73
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01/31,07/31
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74
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75
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03/03,07/02
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76
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77
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04/06,09/27
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78
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79
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04/22,09/11
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80
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81
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07/07,09/27
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82
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83
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08/06,09/27
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84
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85
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09/12,10/24
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86
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87
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10/10,12/28
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88
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89
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10/15,11/24
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90
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91
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10/30,12/04
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92
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93
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12/06,12/30
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94
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95
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```
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