{"id":179,"date":"2026-07-09T13:00:18","date_gmt":"2026-07-09T05:00:18","guid":{"rendered":"https:\/\/info.ect.fyi\/blog\/?p=179"},"modified":"2026-07-09T16:21:07","modified_gmt":"2026-07-09T08:21:07","slug":"java-%e5%93%aa%e4%ba%9b%e5%80%bc%e5%be%97%e8%83%8c%e4%b8%8b%e6%9d%a5%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/info.ect.fyi\/blog\/?p=179","title":{"rendered":"Java&#8211;\u54ea\u4e9b\u503c\u5f97\u80cc\u4e0b\u6765\uff08\u4e00\uff09"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u4e0d\u4ec5\u662f\u8bf4\u9762\u8bd5\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u80cc\u8bf5\u4e00\u4e9b\u57fa\u672c\u64cd\u4f5c\u4e5f\u5f88\u6709\u7528\u3002\u6709\u67e5\u6587\u6863\u7684\u65f6\u95f4\uff0c\u4e00\u4e9b\u66f4\u590d\u6742\u7684\u601d\u8def\u5c31\u4f1a\u88ab\u6253\u65ad\u3002\u8fd9\u4e00\u70b9\u6211\u4eb2\u6709\u4f53\u4f1a&#8230;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">List\/Set\/Map\/Queue<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u7840\u6570\u636e\u7ed3\u6784\u3002\u5c24\u5176\u662f\u524d\u4e09\u4e2a\uff0c\u6240\u6709\u9762\u8bd5\u90fd\u4f1a\u95ee\uff0c\u9664\u975e\u548cJava\u6ca1\u5173\u7cfb\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">List<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c31\u662f\u5217\u8868\u3002\u76f4\u89c9\u4e0a\u5f88\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u89c1\u5b9e\u73b0<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9e\u73b0<\/th><th>\u5e95\u5c42<\/th><th>\u67e5\u8be2<\/th><th>\u63d2\u5165\/\u5220\u9664<\/th><th>\u662f\u5426\u7ebf\u7a0b\u5b89\u5168<\/th><th>\u9002\u7528\u573a\u666f<\/th><\/tr><\/thead><tbody><tr><td><code>ArrayList<\/code> \u2b50<\/td><td>\u52a8\u6001\u6570\u7ec4<\/td><td>O(1)<\/td><td>\u5c3e\u90e8 O(1)\uff0c\u4e2d\u95f4 O(n)<\/td><td>\u5426<\/td><td>\u9ed8\u8ba4\u9996\u9009<\/td><\/tr><tr><td><code>LinkedList<\/code><\/td><td>\u53cc\u5411\u94fe\u8868<\/td><td>O(n)<\/td><td>\u5df2\u77e5\u4f4d\u7f6e\u9644\u8fd1 O(1)<\/td><td>\u5426<\/td><td>\u7ecf\u5e38\u5934\u5c3e\u63d2\u5165\u5220\u9664<\/td><\/tr><tr><td><code>Vector<\/code><\/td><td>\u52a8\u6001\u6570\u7ec4<\/td><td>O(1)<\/td><td>O(n)<\/td><td>\u662f\uff08\u540c\u6b65\uff09<\/td><td>\u8001\u4ee3\u7801\uff0c\u4e0d\u63a8\u8350<\/td><\/tr><tr><td><code>Stack<\/code><\/td><td>\u7ee7\u627f <code>Vector<\/code><\/td><td>O(1)<\/td><td>O(1)<\/td><td>\u662f<\/td><td>\u5df2\u8fc7\u65f6\uff0c\u63a8\u8350 <code>Deque<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e0\u8111\u4f7f\u7528<strong>ArrayList<\/strong>\u662f\u4e00\u4e2a\u597d\u4e60\u60ef\uff0c\u5bf9\u5927\u8111\u6709\u597d\u5904\u3002\u4e0d\u8fc7\uff0c\u5bf9\u4e8e\u7ecf\u5e38\u9700\u8981\u63d2\u5165\/\u5220\u9664\u6570\u636e\u7684\u60c5\u51b5\uff0cLinkedList\u5219\u66f4\u80dc\u4e00\u7b79\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Collection\u7684\u65b9\u6cd5\uff08\u9002\u7528\u4e8eList\/Set\/Queue\u7b49\uff09<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.add(\"A\")<\/code> &#8212; \u6dfb\u52a0\u5143\u7d20<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.remove(\"A\")<\/code> &#8212; \u6210\u529f\u8fd4\u56detrue\uff0c\u4e0d\u5b58\u5728\u8fd4\u56defalse<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.contains(\"B\")<\/code> &#8212; \u5224\u65ad\u662f\u5426\u5b58\u5728<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.size()<\/code> &#8212; \u83b7\u53d6\u5143\u7d20\u4e2a\u6570<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.isEmpty()<\/code> &#8212; \u662f\u5426\u4e3a\u7a7a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.clear()<\/code> &#8212; \u6e05\u7a7a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.iterator()<\/code> &#8212; \u83b7\u53d6\u4e00\u4e2a\u8fed\u4ee3\u5668<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u589e\u5f3afor<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for (int i : l) {\n\tSystem.out.println(s);\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Iterator<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Iterator&lt;Integer&gt; it = c.iterator();\n\nwhile (it.hasNext()) {\n\tSystem.out.println(it.next());\n}\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">List\u7684\u65b9\u6cd5<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.get(0)<\/code> &#8212; \u83b7\u53d6\u67d0\u4e2aindex\u7684\u5143\u7d20<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.set(0, \"C\")<\/code> &#8212; \u8bbe\u7f6e\u67d0\u4e2aindex\u7684\u5143\u7d20<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.add(1, \"D\")<\/code> &#8212; \u5728\u67d0\u4e2a\u4f4d\u7f6e\u63d2\u5165\u5143\u7d20\uff0c\u6307\u5b9a\u7684index\u4f1a\u53d8\u4e3a\u8fd9\u4e2a\u5143\u7d20\uff0c\u539f\u5148\u6240\u5728\u7684\u5143\u7d20\u540e\u79fb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.remove(1)<\/code> &#8212; \u5220\u9664\u67d0\u4e2aindex\u7684\u5143\u7d20<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.indexOf(\"A\")<\/code> &#8212; \u67e5\u627e\u67d0\u4e2a\u5143\u7d20\u7b2c\u4e00\u6b21\u51fa\u73b0\u7684index\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u8fd4\u56de-1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.subList(1, 3)<\/code> &#8212; \u83b7\u53d6\u5b50\u5217\u8868\uff0c\u5de6\u95ed\u53f3\u5f00\uff08\u5305\u62ec\u5de6\u4e0d\u5305\u62ec\u53f3\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>l.sort(null)<\/code> &#8212; \u539f\u5730\u6392\u5e8f\uff08\u5c0f\u5230\u5927\uff09\uff0c\u4f20\u5165Comparator.reverseOrder()\u53ef\u4ee5\u5b9e\u73b0\u5927\u5230\u5c0f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Set<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Set\u662f\u201c\u96c6\u5408\u201d\uff0c\u5176\u4e2d\u6240\u6709\u5143\u7d20\u90fd\u662f<strong>\u72ec\u4e00\u65e0\u4e8c<\/strong>\u7684\u3002\u5b83\u5e38\u88ab\u7528\u4e8e\u786e\u8ba4\u67d0\u4e2a\u5143\u7d20<strong>\u662f\u5426\u5b58\u5728<\/strong>\u7684\u573a\u666f\u3002\u5927\u90e8\u5206\u65f6\u5019\uff0c\u987a\u5e8f\u4e0d\u91cd\u8981\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Set \u6ca1\u6709 index\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u89c1\u5b9e\u73b0<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9e\u73b0<\/th><th>\u5e95\u5c42<\/th><th>\u6392\u5e8f<\/th><th>\u67e5\u8be2<\/th><\/tr><\/thead><tbody><tr><td><code>HashSet<\/code> \u2b50<\/td><td>HashTable<\/td><td>\u65e0\u5e8f<\/td><td>O(1)<\/td><\/tr><tr><td><code>LinkedHashSet<\/code><\/td><td>Hash + LinkedList<\/td><td>\u4fdd\u7559\u63d2\u5165\u987a\u5e8f<\/td><td>O(1)<\/td><\/tr><tr><td><code>TreeSet<\/code><\/td><td>\u7ea2\u9ed1\u6811<\/td><td>\u81ea\u52a8\u6392\u5e8f<\/td><td>O(log n)<\/td><\/tr><tr><td><code>EnumSet<\/code><\/td><td>Bit Vector<\/td><td>Enum \u987a\u5e8f<\/td><td>O(1)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">TreeSet\u4f1a\u81ea\u52a8\u6392\u5e8f\uff0c\u800cLinkedHashSet\u53ea\u4f1a\u4fdd\u7559\u63d2\u5165\u987a\u5e8f\u3002<br>HashSet\u5185\u90e8\u662f\u5b8c\u5168\u65e0\u5e8f\u7684\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u6ca1\u6709\u7d22\u5f15\uff0cSet\u81ea\u5df1\u7684\u5e38\u7528\u65b9\u6cd5\u5f88\u5c11\u3002\u4e3b\u8981\u53c2\u8003Collection\u7684\u90a3\u4e9b\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TreeSet\u63d0\u4f9b\u4e00\u4e9b\u989d\u5916\u65b9\u6cd5\uff0c\u4e86\u89e3\u5373\u53ef\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>first()\nlast()\nhigher()\nlower()\nceiling()\nfloor()\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Map<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4e0d\u77e5\u9053\u600e\u4e48\u7ffb\u8bd1\u8fd9\u4e2a\u8bcd\u3002\u67d0\u4e9b\u7f16\u7a0b\u8bed\u8a00\u4f1a\u628a\u8fd9\u79cd\u7ed3\u6784\u53eb\u505a\u201c\u5b57\u5178\u201d\uff0c\u6216\u8005\u4fd7\u79f0\u201c\u54c8\u5e0c\u8868\u201d&#8211;\u4f46\u8fd9\u5c31\u548c\u5177\u4f53\u5b9e\u73b0\u6302\u4e0a\u94a9\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u4e00\u4e2a\u5f88\u7b26\u5408\u76f4\u89c9\u7684\u201c\u952e\u503c\u5bf9\u201d\u7ed3\u6784\u3002\u5728\u903b\u8f91\u4e0a\uff0c\u5217\u8868\u53ef\u4ee5\u8bf4\u662f\u6b64\u79cd\u7ed3\u6784&#8211;\u5b83\u4eec\u7684Key\u53ea\u80fd\u662f\u6570\u5b57\uff0c\u5e76\u4e14\u4ece0\u5f80\u4e0b\u6392\u3002\u4f46Map\u5341\u5206\u81ea\u7531\u3002\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u503c\u4f5c\u4e3a\u952e\uff0c\u53ea\u9700\u8981\u5b83\u4eec\u662f\u53ef\u54c8\u5e0c\u7684\uff08\u6709\u5408\u6cd5\u7684hashCode()\u548cequals()\u5b9e\u73b0\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u67d0\u4e9b\u4eba\u53ef\u80fd\u4f1a\u60f3\u8d77\u6570\u5b66\u4e0a\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u89c1\u5b9e\u73b0<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9e\u73b0<\/th><th>\u5e95\u5c42<\/th><th>\u987a\u5e8f<\/th><th>\u67e5\u8be2<\/th><\/tr><\/thead><tbody><tr><td><code>HashMap<\/code> \u2b50<\/td><td>HashTable<\/td><td>\u65e0\u5e8f<\/td><td>O(1)<\/td><\/tr><tr><td><code>LinkedHashMap<\/code><\/td><td>Hash + LinkedList<\/td><td>\u63d2\u5165\u987a\u5e8f<\/td><td>O(1)<\/td><\/tr><tr><td><code>TreeMap<\/code><\/td><td>\u7ea2\u9ed1\u6811<\/td><td>Key \u81ea\u52a8\u6392\u5e8f<\/td><td>O(log n)<\/td><\/tr><tr><td><code>Hashtable<\/code><\/td><td>HashTable<\/td><td>\u65e0\u5e8f<\/td><td>O(1)<\/td><\/tr><tr><td><code>ConcurrentHashMap<\/code><\/td><td>\u5e76\u53d1 Hash<\/td><td>\u65e0\u5e8f<\/td><td>O(1)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u770b\u5230\u4e86\u5417\uff0c\u5b83\u548cSet\u7684\u5b9e\u73b0\u975e\u5e38\u7c7b\u4f3c\uff01\u5176\u5b9e\u5b83\u4eec\u4e5f\u5171\u4eab\u4e86\u4e00\u4e9b\u5e95\u5c42\u89c4\u5f8b&#8211;<br>\u56e0\u4e3aMap\u7684\u952e\u662f\u552f\u4e00\u7684\uff0c\u8fd9\u4e00\u70b9\u548cSet\u975e\u5e38\u76f8\u4f3c\u3002\u5b83\u751a\u81f3\u53ef\u4ee5\u770b\u4f5c\u4e00\u79cd\u5e26\u9644\u52a0\u4fe1\u606f\uff08\u4e5f\u5c31\u662fValue\uff09\u7684Set\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u548cSet\u76f8\u4f3c\uff0cTreeMap\u53ef\u4ee5\u5bf9\u952e\u8fdb\u884c\u6392\u5e8f\uff0cLinkedHashMap\u4fdd\u7559\u952e\u503c\u5bf9\u63d2\u5165\u7684\u987a\u5e8f\uff0c\u800cHashMap\u5185\u90e8\u662f\u65e0\u5e8f\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ConcurrentHashMap\u5f88\u4e0d\u4e00\u6837\u3002\u5b83\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002Hashtable\u662f\u4e00\u4e2a\u5386\u53f2\u9057\u7559\u7c7b\uff0c\u5b83\u540c\u6837\u7ebf\u7a0b\u5b89\u5168\uff0c\u4f46\u52a0\u9501\u65b9\u5f0f\u7c97\u66b4\uff0c\u5e38\u5bfc\u81f4\u6027\u80fd\u95ee\u9898\u3002\u5e94\u907f\u514d\u4f7f\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53e6\u5916\uff0c\u4e3a\u4e86\u5728\u5e76\u53d1\u73af\u5883\u4e0b\u907f\u514d\u6b67\u4e49\uff0c\u540c\u65f6\u9632\u6b62\u624b\u52a8\u68c0\u67e5null\u7684\u7ade\u6001\u6761\u4ef6\u95ee\u9898\uff0cConcurrentHashMap\u548cHashtable\u7684\u952e\u548c\u503c\u90fd\u4e0d\u80fd\u4e3anull\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.put(\"Lucy\", 95)<\/code> &#8212; \u52a0\u5165\u5143\u7d20<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.get(\"Tom\")<\/code> &#8212; \u83b7\u53d6\u5143\u7d20\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u8fd4\u56denull<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.remove(\"Tom\")<\/code> &#8212; \u5220\u9664\u5143\u7d20<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.containsKey(\"Tom\")<\/code> &#8212; \u5224\u65adKey<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.containsValue(90)<\/code> &#8212; \u5224\u65adValue<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.keySet()<\/code> &#8212; \u83b7\u53d6key\u7684\u96c6\u5408<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>m.values()<\/code> &#8212; \u83b7\u53d6<code>Collection&lt;V&gt;<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u904d\u5386Entry<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for (Map.Entry&lt;String, Integer&gt; e : m.entrySet()) {\n\tSystem.out.println(e.getKey());\n\tSystem.out.println(e.getValue());\n}\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>m.forEach((k, v) -&gt; {\n\tSystem.out.println(k);\n\tSystem.out.println(v);\n})\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Queue<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u961f\u5217\u662f\u4e00\u79cd\u5148\u8fdb\u5148\u51fa(FIFO)\u6570\u636e\u7ed3\u6784\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u89c1\u5b9e\u73b0<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9e\u73b0<\/th><th>\u5e95\u5c42<\/th><th>\u7279\u70b9<\/th><\/tr><\/thead><tbody><tr><td><code>LinkedList<\/code><\/td><td>\u53cc\u5411\u94fe\u8868<\/td><td>FIFO<\/td><\/tr><tr><td><code>ArrayDeque<\/code> \u2b50<\/td><td>\u5faa\u73af\u6570\u7ec4<\/td><td>\u6700\u63a8\u8350<\/td><\/tr><tr><td><code>PriorityQueue<\/code><\/td><td>\u4e8c\u53c9\u5806<\/td><td>\u4f18\u5148\u7ea7\u961f\u5217<\/td><\/tr><tr><td><code>ConcurrentLinkedQueue<\/code><\/td><td>\u65e0\u9501\u94fe\u8868<\/td><td>\u5e76\u53d1<\/td><\/tr><tr><td><code>ArrayBlockingQueue<\/code><\/td><td>\u6570\u7ec4<\/td><td>\u963b\u585e\u961f\u5217<\/td><\/tr><tr><td><code>LinkedBlockingQueue<\/code><\/td><td>\u94fe\u8868<\/td><td>\u963b\u585e\u961f\u5217<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">LinkedList\u7531\u4e8e\u5176\u7279\u6027\uff0c\u53ef\u4ee5\u76f4\u63a5\u7528\u4e8e\u961f\u5217\uff0c\u4e0d\u4f1a\u6709\u6027\u80fd\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ArrayDeque\u662f\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7684\u9009\u62e9\u3002\u5b83\u7684\u6027\u80fd\u901a\u5e38\u6bd4LinkedList\u66f4\u597d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PriorityQueue\u4e0d\u662fFIFO\u7684\uff0c\u6570\u636e\u51fa\u961f\u65f6\u603b\u4f1a\u6309\u7167\u4e00\u4e2a\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u3002\u5b66\u8fc7\u6570\u636e\u7ed3\u6784\u7684\u4eba\u53ef\u80fd\u4f1a\u8054\u60f3\u5230\u5806\uff0c\u5bf9\uff0c\u5b83\u5c31\u662f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e38\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>q.peek()<\/code> &#8212; \u67e5\u770b\u961f\u9996\uff08\u5c06\u8981\u88ab\u5f39\u51fa\u7684\u503c\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>q.poll()<\/code> &#8212; \u5f39\u51fa\u961f\u9996\uff0c\u961f\u5217\u4e3a\u7a7a\u8fd4\u56denull<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>q.add(30)<\/code> &#8212; \u5f80\u961f\u5c3e\u6dfb\u52a0\u503c\uff0c\u5931\u8d25\u629b\u5f02\u5e38<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>q.offer(30)<\/code> &#8212; \u5f80\u961f\u5c3e\u6dfb\u52a0\u503c\uff0c\u5931\u8d25\u8fd4\u56defalse\u800c\u975e\u629b\u5f02\u5e38<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u91cc\u4e0d\u4ec5\u662f\u8bf4\u9762\u8bd5\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u80cc\u8bf5\u4e00\u4e9b\u57fa\u672c\u64cd\u4f5c\u4e5f\u5f88\u6709\u7528\u3002\u6709\u67e5\u6587\u6863\u7684\u65f6\u95f4\uff0c\u4e00\u4e9b\u66f4\u590d\u6742\u7684\u601d\u8def\u5c31\u4f1a\u88ab\u6253\u65ad\u3002\u8fd9\u4e00\u70b9\u6211 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-179","post","type-post","status-publish","format-standard","hentry","category-12"],"_links":{"self":[{"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=\/wp\/v2\/posts\/179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=179"}],"version-history":[{"count":10,"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=\/wp\/v2\/posts\/179\/revisions"}],"predecessor-version":[{"id":189,"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=\/wp\/v2\/posts\/179\/revisions\/189"}],"wp:attachment":[{"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/info.ect.fyi\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}