フリー問題

問題文

Which pair of methods must change together for a value type used as a key?

選択肢

1. Overriding the comparison method consequently obliges the writer to override the scattering routine, because the collection uses it to pick the target buckets beforehand here.
2. Overriding the comparison method consequently obliges the writer to override the printing helper, because the collection uses it to pick the target buckets beforehand here.
3. Overriding the comparison method consequently obliges the writer to override the printing helper, because the collection uses it to pick the external buckets beforehand here.
4. Overriding the comparison method consequently obliges the writer to override the scattering routine, because the collection uses it to pick the external buckets beforehand here.