{"id":6568,"date":"2021-07-18T10:13:34","date_gmt":"2021-07-18T01:13:34","guid":{"rendered":"https:\/\/taki-lab.site\/bocci\/?p=6568"},"modified":"2021-07-18T10:13:37","modified_gmt":"2021-07-18T01:13:37","slug":"%e3%80%90%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3%e3%80%91iterator%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3","status":"publish","type":"post","link":"https:\/\/taki-lab.site\/bocci\/?p=6568","title":{"rendered":"\u3010\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3011Iterator\u30d1\u30bf\u30fc\u30f3"},"content":{"rendered":"\n

\u540c\u3058\u3088\u3046\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6574\u5217\u3055\u305b\u3066\u7ba1\u7406\u3057\u305f\u3044\u3068\u304d\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306fLIST\u306b\u8fd1\u3044\u3002<\/p>\n\n\n\n

package org.example.iterator;\r\n\r\npublic interface Iterator {\r\n    public Object next();\r\n    public boolean hasNext();\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.iterator;\r\n\r\npublic interface Aggregate {\r\n    public Iterator iterator();\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.iterator;\r\n\r\npublic class ConcreteAggregate implements Aggregate{\r\n    private Object[] objects;\r\n    private int last = 0;\r\n\r\n    public ConcreteAggregate(int maxSize)\r\n    {\r\n        this.objects = new Object[maxSize];\r\n    }\r\n\r\n    public void add(Object object)\r\n    {\r\n        objects[last] = object;\r\n        last++;\r\n    }\r\n\r\n    public Object getItem(int index)\r\n    {\r\n        return objects[index];\r\n    }\r\n\r\n    public int getLast()\r\n    {\r\n        return last;\r\n    }\r\n\r\n    @Override\r\n    public Iterator iterator() {\r\n        return new ConcreteIterator(this);\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.iterator;\r\n\r\npublic class ConcreteIterator implements Iterator {\r\n    private ConcreteAggregate aggregate;\r\n    private int index;\r\n\r\n    public ConcreteIterator(ConcreteAggregate aggregate)\r\n    {\r\n        this.aggregate = aggregate;\r\n        this.index = 0;\r\n    }\r\n\r\n    @Override\r\n    public Object next() {\r\n        Object object = aggregate.getItem(index);\r\n        index++;\r\n        return object;\r\n    }\r\n\r\n    @Override\r\n    public boolean hasNext() {\r\n        if(index < aggregate.getLast())\r\n        {\r\n            return true;\r\n        }\r\n        else\r\n        {\r\n            return false;\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.iterator;\r\n\r\npublic class Item {\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.iterator;\r\n\r\npublic class Main {\r\n    public static void main(String[] args)\r\n    {\r\n        ConcreteAggregate aggregate = new ConcreteAggregate(10);\r\n        aggregate.add(new Item());\r\n        aggregate.add(new Item());\r\n        aggregate.add(new Item());\r\n\r\n        Iterator iterator = aggregate.iterator();\r\n        while(iterator.hasNext())\r\n        {\r\n            Item item = (Item)iterator.next();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
\u307e\u3041\u3001\u3053\u3093\u306a\u30b3\u30fc\u30c9\u66f8\u304b\u306a\u304f\u3066\u3082\u3001\u3059\u3067\u306bIterator\u30af\u30e9\u30b9\u306f\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3002<\/p>\n\n\n\n
List\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089iterator()\u3067\u53d6\u5f97\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u540c\u3058\u3088\u3046\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6574\u5217\u3055\u305b\u3066\u7ba1\u7406\u3057\u305f\u3044\u3068\u304d\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002 \u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306fLIST\u306b\u8fd1\u3044\u3002 \u307e\u3041\u3001\u3053\u3093\u306a\u30b3\u30fc\u30c9\u66f8\u304b\u306a\u304f\u3066\u3082\u3001\u3059\u3067\u306bIterator\u30af\u30e9\u30b9\u306f\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3002 List\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089iterat … \u7d9a\u304d\u3092\u8aad\u3080 \u3010\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3011Iterator\u30d1\u30bf\u30fc\u30f3<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[225,3],"tags":[226],"class_list":["post-6568","post","type-post","status-publish","format-standard","hentry","category-225","category-3","tag-226"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t