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# irb(main):001:0> load "test.rb" | |
# => true | |
# irb(main):002:0> is_kaibun?("あいうえお") | |
# => false | |
# irb(main):003:0> is_kaibun?("あいういあ") | |
# => true | |
# irb(main):004:0> is_kaibun?("わたしまけましたわ") | |
# => true | |
# irb(main):005:0> is_kaibun?("abc") | |
# => false | |
# irb(main):006:0> is_kaibun?("abcba") | |
# => true | |
# irb(main):007:0> is_kaibun?("abba") | |
# => true | |
def is_kaibun?(str) | |
# 奇数長の文字列だった場合、真ん中の文字を削除 | |
if (str.length % 2) == 1 | |
str = str[0, str.length/2] + str[(str.length/2)+1, str.length] | |
end | |
str[0, str.length/2] === str[str.length/2, str.length].reverse | |
end |
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