回答編集履歴
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追記しました。
test
CHANGED
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@@ -5,3 +5,107 @@
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5
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if Date.new(year,mon,date).wday == 6
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6
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7
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に変えてください。
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```Ruby
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14
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15
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require "date"
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require 'optparse'
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18
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day = Date.today
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20
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options = ARGV.getopts("y:", "m:")
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if options["y"]
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year = options["y"].to_i
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else
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30
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year = day.year
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32
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end
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if options["m"]
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month = options["m"].to_i
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40
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else
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42
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month = day.mon
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end
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head = Date.today.strftime("%B, %Y")
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year = Date.today.year
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52
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mon = Date.today.mon
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firstday = Date.new(year,mon, 1).wday
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56
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lastday = Date.new(year,mon, -1).day
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week = %w(Su Mo Tu We Th Fr Sa)
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puts head.center(20)
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64
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puts week.join(" ")
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66
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print " " * firstday
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wday = firstday
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(1..lastday).each do |date|
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print date.to_s.rjust(2) + " "
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if Date.new(year,mon,date).wday == 6
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puts "\n"
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end
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end
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```
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実行結果
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92
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```Ruby結果
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94
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January, 2021
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96
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97
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Su Mo Tu We Th Fr Sa
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98
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99
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1 2
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100
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101
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3 4 5 6 7 8 9
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102
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103
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10 11 12 13 14 15 16
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104
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105
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17 18 19 20 21 22 23
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106
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107
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24 25 26 27 28 29 30
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108
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109
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31
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110
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111
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```
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