５人の学生を 身長で ソート (配列)

明解Ｃ言語 入門編 > 12. 構造体 >

５人の学生を 身長で ソート (配列)

Ruby

NINSU = 5

def sort(height, name, n)
    k = n - 1
    while (k >= 0)
        j = -1
        for i in 1..k
            if (height[i - 1] > height[i])
                j = i - 1
                height[i], height[j] = height[j], height[i]
                name[i],   name[j]   = name[j],   name[i]
            end
        end
        k = j
    end
end

height = [178, 175, 173, 165, 179]
name   = ["Sato", "Sanaka", "Takao", "Mike", "Masaki"]

puts "ソート前："
height.each_with_index do |h, i|
    printf("%2d:%-8s%4d\n", i + 1, name[i], h)
end
puts ""

sort(height, name, NINSU)

puts "ソート後："
i = 1
height.zip(name) do |h, n|
    printf("%2d:%-8s%4d\n", i, n, h)
    i += 1
end

実行結果

L:\>ruby  l:\lesson_12_089.rb

メ[ト前：

 1:Sato     178

 2:Sanaka   175

 3:Takao    173

 4:Mike     165

 5:Masaki   179
メ[ト後：

 1:Mike     165

 2:Takao    173

 3:Sanaka   175

 4:Sato     178

 5:Masaki   179