集合演算法

A. 闆嗗悎闂寸殑鍩烘湰榪愮畻

闆嗗悎闂寸殑鍩烘湰榪愮畻鐨勫洖絳斿備笅錛

闆嗗悎鏄鏁板︿腑涓涓鍩烘湰涓旈噸瑕佺殑姒傚康錛屽畠鏄鎴戜滑鐮旂┒闆嗗悎璁恆佹嫇鎵戙佸疄鏁扮悊璁哄拰璁稿氬叾浠栨暟瀛﹀垎鏀鐨勫熀紜銆傞泦鍚堥棿鐨勮繍綆楀寘鎷浜ら泦銆佸苟闆嗐佽ˉ闆嗐佸樊闆嗙瓑銆傝繖浜涜繍綆楁槸鍩轟簬闆嗗悎鐨勪氦銆佸苟銆佽ˉ銆佸樊絳夋傚康榪涜屾搷浣滅殑銆

涓銆佷氦闆嗭紙Intersection錛

浜ら泦鏄鎸囦袱涓鎴栧氫釜闆嗗悎鐨勫叕鍏卞厓緔犵粍鎴愮殑闆嗗悎銆傜粰瀹氫袱涓闆嗗悎A鍜孊錛屽畠浠鐨勪氦闆嗚頒綔A鈭〣錛屽叾鍏冪礌鏄鍚屾椂灞炰簬A鍜孊鐨勫厓緔犮傚畾涔夛細瀵逛簬浠繪剰涓や釜闆嗗悎A鍜孊錛孉鈭〣={x|x鈭圓涓攛鈭圔}銆備緥濡傦細鑻A={1,2,3}錛孊={2,3,4}錛屽垯A鈭〣={2,3}銆

鍥涖佸樊闆嗭紙Difference錛

宸闆嗘槸鎸囧湪涓涓闆嗗悎涓涓嶅睘浜庡彟涓涓闆嗗悎鐨勫厓緔犵粍鎴愮殑闆嗗悎銆傜粰瀹氫袱涓闆嗗悎A鍜孊錛孉鍏充簬B鐨勫樊闆嗚頒綔A-B錛屽叾鍏冪礌A涓鐨勫厓緔犱絾涓嶅睘浜嶣涓鐨勫厓緔犮傚畾涔夛細瀵逛簬浠繪剰涓や釜闆嗗悎A鍜孊錛孉-B={x|x鈭圓涓攛涓嶅睘浜嶣}銆傜瓑浠蜂簬AB銆

闄や簡涓婅堪鍩烘湰鐨勯泦鍚堣繍綆楋紝榪樻湁璁稿氬叾浠栫殑闆嗗悎榪愮畻錛屼緥濡傚圭О宸銆佺瑳鍗″皵縐絳夈傝繖浜涜繍綆椾負鎴戜滑鎻愪緵浜嗘洿涓板瘜鐨勫伐鍏鋒潵澶勭悊闆嗗悎鐩稿叧鐨勯棶棰樸傚湪璁＄畻鏈虹戝︿腑錛岄泦鍚堣繍綆楄騫挎硾搴旂敤鍦ㄦ暟鎹緇撴瀯鍜岀畻娉曠殑璁捐′笂銆傚湪鏁板︾殑鍏朵粬鍒嗘敮涓錛岄泦鍚堣繍綆椾篃琚騫挎硾鐢ㄤ簬鍒嗘瀽鍜岃В鍐沖悇縐嶉棶棰樸