「逆引きPython/集合」の編集履歴（バックアップ）一覧はこちら

「逆引きPython/集合」(2009/07/31 (金) 21:53:45) の最新版変更点

追加された行は緑色になります。

削除された行は赤色になります。

*&this_page()
#contents(fromhere=true)

**集合を定義する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> print(s)
 {'Bacon', 'Egg', 'SPAM'}

**集合の要素数を取得する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> len(s)
 3

**集合に要素を追加する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> s.add("Sausage")
 >>> print(s)
 {'Bacon', 'Sausage', 'Egg', 'SPAM'}
 >>> s.add("SPAM")
 >>> print(s)
 {'Bacon', 'Sausage', 'Egg', 'SPAM'}

**集合から要素を削除する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> s.remove("SPAM")
 >>> print(s)
 {'Bacon', 'Egg'}
 >>> s.discard("Bacon")
 >>> print(s)
 {'Egg'}
 >>> s.discard("SPAM")
 >>> print(s)
 {'Egg'}

**集合から要素を取り出す
 >>> s = set([1,2,3,4,5])
 >>> s.pop()
 1
 >>> print(s)
 {2, 3, 4, 5}

**集合の関係を求める
 >>> s1 = set([1,2,3])
 >>> s2 = set([1,2,3,4,5])
 >>> s1 < s2
 True
 >>> s1 >= s2
 False

**集合の和を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s1 | s2
 {1, 2, 3, 4, 5, 6}

**集合の差を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s2 - s1
 {2, 5, 6}

**集合の積を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s1 & s2
 {1}

**集合の排他的和を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s1 ^ s2
 {2, 3, 4, 5, 6}
 >>> (s1|s2)-(s1&s2)
 {2, 3, 4, 5, 6}

----

#contents(fromhere=true)

**集合を定義する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> print(s)
 {'Bacon', 'Egg', 'SPAM'}

**集合の要素数を取得する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> len(s)
 3

**集合に要素を追加する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> s.add("Sausage")
 >>> print(s)
 {'Bacon', 'Sausage', 'Egg', 'SPAM'}
 >>> s.add("SPAM")
 >>> print(s)
 {'Bacon', 'Sausage', 'Egg', 'SPAM'}

**集合から要素を削除する
 >>> s = set(["SPAM","Egg","SPAM","Bacon","Bacon"])
 >>> s.remove("SPAM")
 >>> print(s)
 {'Bacon', 'Egg'}
 >>> s.discard("Bacon")
 >>> print(s)
 {'Egg'}
 >>> s.discard("SPAM")
 >>> print(s)
 {'Egg'}

**集合から要素を取り出す
 >>> s = set([1,2,3,4,5])
 >>> s.pop()
 1
 >>> print(s)
 {2, 3, 4, 5}

**集合の関係を求める
 >>> s1 = set([1,2,3])
 >>> s2 = set([1,2,3,4,5])
 >>> s1 < s2
 True
 >>> s1 >= s2
 False

**集合の和を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s1 | s2
 {1, 2, 3, 4, 5, 6}

**集合の差を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s2 - s1
 {2, 5, 6}

**集合の積を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s1 & s2
 {1}

**集合の排他的和を求める
 >>> s1 = set([1,3,4])
 >>> s2 = set([1,2,5,6])
 >>> s1 ^ s2
 {2, 3, 4, 5, 6}
 >>> (s1|s2)-(s1&s2)
 {2, 3, 4, 5, 6}

----