#ひらがなの番号を得る
def searchkana(s)
	c=splitString("あいうえおかがきぎくぐけげこごさざしじすずせぜそぞただちぢっつづてでとどなにぬねのはばぱひびぴふぶぷへべぺほぼぽまみむめもゃやゅゆょよらりるれろわをん", "")
	left = 0
	right = 74
	while left < right
		mid = floor((left + right) / 2)
		if c[mid] == s
			left=mid
			right=mid
		elsif s < c[mid]
			right= mid-1
		else
			left=mid +1
		end
	end
	return left
end