{"id":1412,"date":"2026-04-30T10:22:05","date_gmt":"2026-04-30T02:22:05","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1412"},"modified":"2026-04-30T10:22:06","modified_gmt":"2026-04-30T02:22:06","slug":"%e3%80%90java%e3%80%91%e6%a0%88-stack-%e8%af%a6%e8%a7%a3%ef%bc%9a%e4%bb%8e%e5%8e%9f%e7%90%86%e5%88%b0%e5%ae%9e%e6%88%98%e7%9a%84%e5%ae%8c%e6%95%b4%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1412","title":{"rendered":"\u3010Java\u3011\u6808 Stack \u8be6\u89e3\uff1a\u4ece\u539f\u7406\u5230\u5b9e\u6218\u7684\u5b8c\u6574\u6307\u5357"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5927\u5bb6\u597d\uff0c\u6211\u662f\u4e91\u626c\uff5e \u4eca\u5929\u60f3\u548c\u5927\u5bb6\u6df1\u5165\u804a\u804a Java \u4e2d\u7684\u6808\uff08Stack\uff09\u6570\u636e\u7ed3\u6784\u3002\u4f5c\u4e3a\u7f16\u7a0b\u4e2d\u6700\u57fa\u7840\u4e5f\u6700\u5e38\u7528\u7684\u6570\u636e\u7ed3\u6784\u4e4b\u4e00\uff0c\u6808\u7684 \u201c\u540e\u8fdb\u5148\u51fa\u201d \u7279\u6027\u5728\u5f88\u591a\u573a\u666f\u4e2d\u90fd\u80fd\u53d1\u6325\u5173\u952e\u4f5c\u7528\u3002\u8fd9\u7bc7\u6587\u7ae0\u4f1a\u4ece\u6808\u7684\u6838\u5fc3\u539f\u7406\u3001\u81ea\u5b9a\u4e49\u5b9e\u73b0\u3001API \u4f7f\u7528\u5230\u5b9e\u9645\u5e94\u7528\uff0c\u5e26\u5927\u5bb6\u5168\u9762\u638c\u63e1\u6808\u7684\u77e5\u8bc6\u70b9\uff0c\u6587\u4e2d\u4f1a\u7a7f\u63d2\u5b8c\u6574\u4ee3\u7801\u793a\u4f8b\uff0c\u65b9\u4fbf\u5927\u5bb6\u76f4\u63a5\u4e0a\u624b\u5b9e\u8df5\uff5e<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u6808\u7684\u6838\u5fc3\u6982\u5ff5\uff1a\u4ec0\u4e48\u662f \u201c\u540e\u8fdb\u5148\u51fa\u201d\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6808\uff08Stack\uff09\u662f\u4e00\u79cd\u9075\u5faa <strong>LIFO\uff08Last In First Out\uff0c\u540e\u8fdb\u5148\u51fa\uff09<\/strong> \u539f\u5219\u7684\u7ebf\u6027\u6570\u636e\u7ed3\u6784\u3002\u5c31\u50cf\u6211\u4eec\u53e0\u76d8\u5b50\uff0c\u6700\u540e\u653e\u4e0a\u53bb\u7684\u76d8\u5b50\u4f1a\u6700\u5148\u88ab\u62ff\u8d70\uff0c\u6808\u4e2d\u7684\u5143\u7d20\u4e5f\u9075\u5faa\u540c\u6837\u7684\u903b\u8f91 \u2014\u2014 \u6700\u540e\u538b\u5165\u7684\u5143\u7d20\uff0c\u4f1a\u5728\u5f39\u51fa\u65f6\u4f18\u5148\u5904\u7406\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6808\u7684\u6838\u5fc3\u64cd\u4f5c\u53ea\u6709\u4e24\u4e2a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>push\uff08\u538b\u5165\uff09<\/strong>\uff1a\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6808\u9876<\/li>\n\n\n\n<li><strong>pop\uff08\u5f39\u51fa\uff09<\/strong>\uff1a\u4ece\u6808\u9876\u79fb\u9664\u5e76\u8fd4\u56de\u5143\u7d20<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u9664\u6b64\u4e4b\u5916\uff0c\u6808\u8fd8\u6709\u4e24\u4e2a\u8f85\u52a9\u5224\u65ad\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>isEmpty\uff08\u5224\u7a7a\uff09<\/strong>\uff1a\u5224\u65ad\u6808\u662f\u5426\u4e3a\u7a7a<\/li>\n\n\n\n<li><strong>isFull\uff08\u5224\u6ee1\uff09<\/strong>\uff1a\u5224\u65ad\u6808\u662f\u5426\u8fbe\u5230\u6700\u5927\u5bb9\u91cf\uff08\u6570\u7ec4\u5b9e\u73b0\u65f6\u9700\u8981\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u81ea\u5b9a\u4e49\u6808\u5b9e\u73b0\uff1a\u6570\u7ec4\u7248\u6808\u7684\u5b8c\u6574\u4ee3\u7801<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136 Java \u63d0\u4f9b\u4e86\u73b0\u6210\u7684 Stack \u7c7b\uff0c\u4f46\u4eb2\u624b\u5b9e\u73b0\u4e00\u4e2a\u6808\u80fd\u5e2e\u52a9\u6211\u4eec\u66f4\u6df1\u5165\u7406\u89e3\u5176\u539f\u7406\u3002\u4e0b\u9762\u7528\u6570\u7ec4\u5b9e\u73b0\u4e00\u4e2a\u57fa\u7840\u7684 int \u7c7b\u578b\u6808\uff0c\u5305\u542b\u521d\u59cb\u5316\u3001\u538b\u5165\u3001\u5f39\u51fa\u3001\u904d\u5386\u7b49\u6838\u5fc3\u529f\u80fd\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class CustomStack {\n    \/\/ \u5b58\u50a8\u6808\u5143\u7d20\u7684\u6570\u7ec4\n    private int&#91;] stack;\n    \/\/ \u6808\u9876\u6307\u9488\uff08-1\u8868\u793a\u6808\u7a7a\uff09\n    private int top;\n    \/\/ \u6808\u7684\u6700\u5927\u5bb9\u91cf\n    private int capacity;\n\n    \/\/ 1. \u521d\u59cb\u5316\u6808\n    public CustomStack(int capacity) {\n        this.capacity = capacity;\n        this.stack = new int&#91;capacity];\n        this.top = -1; \/\/ \u521d\u59cb\u6808\u7a7a\n    }\n\n    \/\/ 2. \u538b\u5165\u5143\u7d20\uff08push\uff09\n    public void push(int element) {\n        if (isFull()) {\n            throw new RuntimeException(\"\u6808\u5df2\u6ee1\uff0c\u65e0\u6cd5\u538b\u5165\u5143\u7d20\uff01\");\n        }\n        top++; \/\/ \u6808\u9876\u6307\u9488\u4e0a\u79fb\n        stack&#91;top] = element; \/\/ \u5b58\u5165\u5143\u7d20\n    }\n\n    \/\/ 3. \u5f39\u51fa\u5143\u7d20\uff08pop\uff09\n    public int pop() {\n        if (isEmpty()) {\n            throw new RuntimeException(\"\u6808\u5df2\u7a7a\uff0c\u65e0\u6cd5\u5f39\u51fa\u5143\u7d20\uff01\");\n        }\n        int element = stack&#91;top]; \/\/ \u53d6\u51fa\u6808\u9876\u5143\u7d20\n        top--; \/\/ \u6808\u9876\u6307\u9488\u4e0b\u79fb\n        return element;\n    }\n\n    \/\/ 4. \u67e5\u770b\u6808\u9876\u5143\u7d20\uff08\u4e0d\u5f39\u51fa\uff09\n    public int peek() {\n        if (isEmpty()) {\n            throw new RuntimeException(\"\u6808\u5df2\u7a7a\uff0c\u65e0\u5143\u7d20\u53ef\u67e5\u770b\uff01\");\n        }\n        return stack&#91;top];\n    }\n\n    \/\/ 5. \u5224\u65ad\u6808\u662f\u5426\u4e3a\u7a7a\n    public boolean isEmpty() {\n        return top == -1;\n    }\n\n    \/\/ 6. \u5224\u65ad\u6808\u662f\u5426\u5df2\u6ee1\n    public boolean isFull() {\n        return top == capacity - 1;\n    }\n\n    \/\/ 7. \u83b7\u53d6\u6808\u7684\u5927\u5c0f\n    public int size() {\n        return top + 1; \/\/ \u6808\u9876\u6307\u9488+1\u5373\u4e3a\u5143\u7d20\u4e2a\u6570\n    }\n\n    \/\/ 8. \u6253\u5370\u6808\u4e2d\u6240\u6709\u5143\u7d20\uff08\u4ece\u6808\u5e95\u5230\u6808\u9876\uff09\n    public void printStack() {\n        if (isEmpty()) {\n            System.out.println(\"\u6808\u4e3a\u7a7a\uff01\");\n            return;\n        }\n        System.out.print(\"\u6808\u5143\u7d20\uff08\u5e95-&gt;\u9876\uff09\uff1a\");\n        for (int i = 0; i  top; i++) {\n            System.out.print(stack&#91;i] + \" \");\n        }\n        System.out.println();\n    }\n\n    \/\/ \u6d4b\u8bd5\u65b9\u6cd5\n    public static void main(String&#91;] args) {\n        CustomStack stack = new CustomStack(5); \/\/ \u521d\u59cb\u5316\u5bb9\u91cf\u4e3a5\u7684\u6808\n\n        \/\/ \u538b\u5165\u5143\u7d20\n        stack.push(10);\n        stack.push(20);\n        stack.push(30);\n        stack.printStack(); \/\/ \u8f93\u51fa\uff1a\u6808\u5143\u7d20\uff08\u5e95-&gt;\u9876\uff09\uff1a10 20 30\n\n        \/\/ \u67e5\u770b\u6808\u9876\u5143\u7d20\n        System.out.println(\"\u5f53\u524d\u6808\u9876\u5143\u7d20\uff1a\" + stack.peek()); \/\/ \u8f93\u51fa\uff1a30\n\n        \/\/ \u5f39\u51fa\u5143\u7d20\n        int popElement = stack.pop();\n        System.out.println(\"\u5f39\u51fa\u7684\u5143\u7d20\uff1a\" + popElement); \/\/ \u8f93\u51fa\uff1a30\n        stack.printStack(); \/\/ \u8f93\u51fa\uff1a\u6808\u5143\u7d20\uff08\u5e95-&gt;\u9876\uff09\uff1a10 20\n\n        \/\/ \u67e5\u770b\u6808\u5927\u5c0f\n        System.out.println(\"\u5f53\u524d\u6808\u5927\u5c0f\uff1a\" + stack.size()); \/\/ \u8f93\u51fa\uff1a2\n    }\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4ee3\u7801\u8bf4\u660e<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7528\u6570\u7ec4<code>stack<\/code>\u5b58\u50a8\u5143\u7d20\uff0c<code>top<\/code>\u6307\u9488\u6807\u8bb0\u6808\u9876\u4f4d\u7f6e\uff0c<code>capacity<\/code>\u9650\u5236\u6808\u7684\u6700\u5927\u5bb9\u91cf<\/li>\n\n\n\n<li><code>push<\/code>\u548c<code>pop<\/code>\u64cd\u4f5c\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u5747\u4e3a<code>O(1)<\/code>\uff0c\u56e0\u4e3a\u4ec5\u9700\u64cd\u4f5c\u6808\u9876\u6307\u9488\uff0c\u65e0\u9700\u904d\u5386\u6570\u7ec4<\/li>\n\n\n\n<li>\u52a0\u5165\u4e86\u5f02\u5e38\u5904\u7406\uff0c\u907f\u514d\u6808\u6ea2\u51fa\u6216\u7a7a\u6808\u64cd\u4f5c\u5bfc\u81f4\u7684\u9519\u8bef<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001Java \u4e2d\u7684 Stack \u7c7b\uff1aAPI \u4f7f\u7528\u4e0e\u6e90\u7801\u89e3\u6790<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Java \u7684<code>java.util.Stack<\/code>\u7c7b\u662f\u5b98\u65b9\u5b9e\u73b0\u7684\u6808\u7ed3\u6784\uff0c\u5b83\u7ee7\u627f\u81ea<code>Vector<\/code>\u7c7b\uff0c\u56e0\u6b64\u5929\u7136\u652f\u6301\u7ebf\u7a0b\u5b89\u5168\uff08\u4f46\u6027\u80fd\u7565\u4f4e\uff09\u3002\u4e0b\u9762\u6211\u4eec\u6765\u770b\u770b\u5b83\u7684\u6838\u5fc3\u7528\u6cd5\u548c\u6e90\u7801\u903b\u8f91\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Stack \u7c7b\u7684\u6838\u5fc3\u65b9\u6cd5<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u65b9\u6cd5\u540d<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u529f\u80fd\u63cf\u8ff0<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\"><code>push(E item)<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\">\u538b\u5165\u5143\u7d20\u5230\u6808\u9876\uff0c\u8fd4\u56de\u8be5\u5143\u7d20<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><code>pop()<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5f39\u51fa\u5e76\u8fd4\u56de\u6808\u9876\u5143\u7d20\uff0c\u6808\u7a7a\u65f6\u629b<code>EmptyStackException<\/code><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><code>peek()<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\">\u67e5\u770b\u6808\u9876\u5143\u7d20\uff08\u4e0d\u5f39\u51fa\uff09\uff0c\u6808\u7a7a\u65f6\u629b<code>EmptyStackException<\/code><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><code>empty()<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5224\u65ad\u6808\u662f\u5426\u4e3a\u7a7a\uff0c\u8fd4\u56de<code>boolean<\/code><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><code>search(Object o)<\/code><\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4ece\u6808\u9876\u5f00\u59cb\u641c\u7d22\u5143\u7d20\uff0c\u8fd4\u56de\u7d22\u5f15\uff08\u6808\u9876\u4e3a 1\uff0c\u672a\u627e\u5230\u8fd4\u56de &#8211; 1\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u57fa\u7840\u4f7f\u7528\u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Stack;\n\npublic class StackDemo {\n    public static void main(String&#91;] args) {\n        Stack&lt;String> stack = new Stack&lt;>();\/\/ \u538b\u5165\u5143\u7d20\n        stack.push(\"Java\");\n        stack.push(\"Python\");\n        stack.push(\"Golang\");\n\n        \/\/ \u67e5\u770b\u6808\u9876\n        System.out.println(\"\u6808\u9876\u5143\u7d20\uff1a\" + stack.peek()); \/\/ \u8f93\u51fa\uff1aGolang\n\n        \/\/ \u641c\u7d22\u5143\u7d20\n        System.out.println(\"Python\u7684\u4f4d\u7f6e\uff1a\" + stack.search(\"Python\")); \/\/ \u8f93\u51fa\uff1a2\n\n        \/\/ \u5f39\u51fa\u5143\u7d20\n        System.out.println(\"\u5f39\u51fa\u5143\u7d20\uff1a\" + stack.pop()); \/\/ \u8f93\u51fa\uff1aGolang\n\n        \/\/ \u904d\u5386\u6808\uff08\u6ce8\u610f\uff1aStack\u65e0\u8fed\u4ee3\u5668\uff0c\u9700\u901a\u8fc7pop\u904d\u5386\uff0c\u4f1a\u6e05\u7a7a\u6808\uff09\n        System.out.print(\"\u6808\u4e2d\u5269\u4f59\u5143\u7d20\uff1a\");\n        while (!stack.empty()) {\n            System.out.print(stack.pop() + \" \"); \/\/ \u8f93\u51fa\uff1aPython Java\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u6e90\u7801\u5173\u952e\u70b9\u89e3\u6790<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7ee7\u627f\u5173\u7cfb<\/strong>\uff1a<code>public class Stack&lt;E> extends Vector&lt;E><\/code> \u7684\u52a8\u6001\u6570\u7ec4\u548c\u540c\u6b65\u673a\u5236<\/li>\n\n\n\n<li><strong>push \u65b9\u6cd5<\/strong>\uff1a\u672c\u8d28\u8c03\u7528<code>Vector.addElement(item)<\/code>\uff0c\u81ea\u5e26<code>synchronized<\/code>\u9501\uff0c\u7ebf\u7a0b\u5b89\u5168 <\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public E push(E item) {\n    addElement(item);\n    return item;\n}<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>pop \u65b9\u6cd5<\/strong>\uff1a\u5148\u901a\u8fc7<code>peek()<\/code>\u83b7\u53d6\u6808\u9876\uff08<code>elementAt(size()-1)<\/code>\uff09\uff0c\u518d\u8c03\u7528<code>removeElementAt(size()-1)<\/code>\u79fb\u9664<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public synchronized E pop() {\n    E  obj;\n    int len = size();\n    obj = peek();\n    removeElementAt(len - 1);\n    return obj;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u6808\u7684\u7ecf\u5178\u5e94\u7528\u573a\u666f\uff08\u9644\u4ee3\u7801\u793a\u4f8b\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6808\u7684 LIFO \u7279\u6027\u8ba9\u5b83\u5728\u5f88\u591a\u573a\u666f\u4e2d\u5927\u653e\u5f02\u5f69\uff0c\u4e0b\u9762\u5206\u4eab 3 \u4e2a\u6700\u5e38\u7528\u7684\u5e94\u7528\u573a\u666f\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u5b57\u7b26\u4e32\u53cd\u8f6c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5229\u7528\u6808\u7684 \u201c\u5148\u8fdb\u540e\u51fa\u201d\uff0c\u5c06\u5b57\u7b26\u4f9d\u6b21\u538b\u5165\u6808\uff0c\u518d\u5f39\u51fa\u5373\u53ef\u5b9e\u73b0\u53cd\u8f6c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class StringReverse {\n    public static String reverse(String str) {\n        Stack&lt;Character> stack = new Stack&lt;>();      \/\/ \u538b\u5165\u6240\u6709\u5b57\u7b26\n        for (char c : str.toCharArray()) {\n            stack.push(c);\n        }\n        \/\/ \u5f39\u51fa\u62fc\u63a5\u53cd\u8f6c\u5b57\u7b26\u4e32\n        StringBuilder sb = new StringBuilder();\n        while (!stack.empty()) {\n            sb.append(stack.pop());\n        }\n        return sb.toString();\n    }\n\n    public static void main(String&#91;] args) {\n        String original = \"Hello, Stack!\";\n        String reversed = reverse(original);\n        System.out.println(\"\u539f\u5b57\u7b26\u4e32\uff1a\" + original);\n        System.out.println(\"\u53cd\u8f6c\u540e\uff1a\" + reversed); \/\/ \u8f93\u51fa\uff1a!katS ,olleH\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u6d4f\u89c8\u5668\u540e\u9000\u529f\u80fd\u6a21\u62df<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6808\u5b58\u50a8\u8bbf\u95ee\u8fc7\u7684 URL\uff0c\u70b9\u51fb\u540e\u9000\u65f6\u5f39\u51fa\u6808\u9876 URL\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Browser {\n    private final  Stack&lt;String> history = new Stack&lt;>();\n\n    \/\/ \u8bbf\u95ee\u65b0\u9875\u9762\n    public void visit(String url) {\n        history.push(url);\n        System.out.println(\"\u8bbf\u95ee\u9875\u9762\uff1a\" + url);\n    }\n\n    \/\/ \u540e\u9000\u64cd\u4f5c\n    public String back() {\n        if (history.size() == 1) {\n            System.out.println(\"\u5df2\u9000\u81f3\u521d\u59cb\u9875\u9762\uff0c\u65e0\u6cd5\u7ee7\u7eed\u540e\u9000\uff01\");\n            return history.peek();\n        }\n        history.pop(); \/\/ \u79fb\u9664\u5f53\u524d\u9875\u9762\n        String prevUrl = history.peek();\n        System.out.println(\"\u540e\u9000\u81f3\uff1a\" + prevUrl);\n        return prevUrl;\n    }\n\n    public static void main(String&#91;] args) {\n        Browser browser = new Browser();\n        browser.visit(\"https:\/\/www.google.com\");\n        browser.visit(\"https:\/\/www.github.com\");\n        browser.visit(\"https:\/\/www.csdn.net\");\n\n        browser.back(); \/\/ \u540e\u9000\u81f3\uff1ahttps:\/\/www.github.com\n        browser.back(); \/\/ \u540e\u9000\u81f3\uff1ahttps:\/\/www.google.com\n        browser.back(); \/\/ \u5df2\u9000\u81f3\u521d\u59cb\u9875\u9762\uff0c\u65e0\u6cd5\u7ee7\u7eed\u540e\u9000\uff01\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u7b80\u5355\u8ba1\u7b97\u5668\uff08\u540e\u7f00\u8868\u8fbe\u5f0f\u6c42\u503c\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6808\u53ef\u7528\u4e8e\u5904\u7406\u6570\u5b66\u8868\u8fbe\u5f0f\uff0c\u8fd9\u91cc\u4ee5\u540e\u7f00\u8868\u8fbe\u5f0f\uff08\u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\uff09\u4e3a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Stack;\n\npublic class Calculator {\n    public static int evaluatePostfix(String expression) {\n        Stack&lt;Integer> stack = new Stack&lt;>();\n        String&#91;] tokens = expression.split(\" \");\n\n        for (String token : tokens) {\n            \/\/ \u5982\u679c\u662f\u6570\u5b57\uff0c\u538b\u5165\u6808\n            if (token.matches(\"\\\\d+\")) {\n                stack.push(Integer.parseInt(token));\n            } else {\n                \/\/ \u5982\u679c\u662f\u8fd0\u7b97\u7b26\uff0c\u5f39\u51fa\u4e24\u4e2a\u6570\u8ba1\u7b97\u540e\u538b\u56de\u7ed3\u679c\n                int num2 = stack.pop();\n                int num1 = stack.pop();\n                switch (token) {\n                    case \"+\":\n                        stack.push(num1 + num2);\n                        break;\n                    case \"-\":\n                        stack.push(num1 - num2);\n                        break;\n                    case \"*\":\n                        stack.push(num1 * num2);\n                        break;\n                    case \"\/\":\n                        stack.push(num1 \/ num2);\n                        break;\n                    default:\n                        throw new IllegalArgumentException(\"\u65e0\u6548\u8fd0\u7b97\u7b26\uff1a\" + token);\n                }\n            }\n        }\n        return stack.pop();\n    }\n\n    public static void main(String&#91;] args) {\n        \/\/ \u540e\u7f00\u8868\u8fbe\u5f0f \"3 4 + 2 * 7 \/\" \u7b49\u4ef7\u4e8e ((3+4)*2)\/7 = 2\n        String postfix = \"3 4 + 2 * 7 \/\";\n        int result = evaluatePostfix(postfix);\n        System.out.println(\"\u540e\u7f00\u8868\u8fbe\u5f0f\u7ed3\u679c\uff1a\" + result); \/\/ \u8f93\u51fa\uff1a2\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u6ce8\u610f\u4e8b\u9879\uff1a\u4e3a\u4ec0\u4e48\u63a8\u8350\u7528 ArrayDeque \u66ff\u4ee3 Stack\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136<code>java.util.Stack<\/code>\u4f7f\u7528\u65b9\u4fbf\uff0c\u4f46\u5b83\u7ee7\u627f\u81ea<code>Vector<\/code>\uff0c\u5b58\u5728\u4e24\u4e2a\u660e\u663e\u7f3a\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6027\u80fd\u95ee\u9898<\/strong>\uff1aVector \u7684\u6240\u6709\u65b9\u6cd5\u90fd\u52a0\u4e86<code>synchronized<\/code>\u9501\uff0c\u5355\u7ebf\u7a0b\u573a\u666f\u4e0b\u4f1a\u6709\u4e0d\u5fc5\u8981\u7684\u6027\u80fd\u5f00\u9500<\/li>\n\n\n\n<li><strong>\u8bbe\u8ba1\u5197\u4f59<\/strong>\uff1aStack \u4ec5\u9700\u6808\u7684\u6838\u5fc3\u64cd\u4f5c\uff0c\u4f46\u7ee7\u627f\u81ea Vector \u540e\uff0c\u66b4\u9732\u4e86<code>add(int index, E element)<\/code>\u7b49\u968f\u673a\u8bbf\u95ee\u65b9\u6cd5\uff0c\u7834\u574f\u4e86\u6808\u7684\u5c01\u88c5\u6027<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff0cJava \u5b98\u65b9\u63a8\u8350\u4f7f\u7528 <code>ArrayDeque<\/code> \u66ff\u4ee3 Stack\uff0c\u5b83\u5b9e\u73b0\u4e86<code>Deque<\/code>\u63a5\u53e3\uff0c\u65e2\u53ef\u4ee5\u4f5c\u4e3a\u6808\u4f7f\u7528\uff0c\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u961f\u5217\u4f7f\u7528\uff0c\u6027\u80fd\u66f4\u4f18\u4e14 API \u66f4\u7eaf\u7cb9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.ArrayDeque;\nimport java.util.Deque;\n\npublic class ArrayDequeAsStack {\n    public static void main(String&#91;] args) {\n        Deque&lt;String> stack = new ArrayDeque&lt;>();  \/\/ \u538b\u5165\u5143\u7d20\uff08\u6808\u64cd\u4f5c\uff09\n        stack.push(\"A\");\n        stack.push(\"B\");\n        stack.push(\"C\");\n\n        System.out.println(\"\u6808\u9876\u5143\u7d20\uff1a\" + stack.peek()); \/\/ \u8f93\u51fa\uff1aC\n        System.out.println(\"\u5f39\u51fa\u5143\u7d20\uff1a\" + stack.pop()); \/\/ \u8f93\u51fa\uff1aC\n        System.out.println(\"\u6808\u662f\u5426\u4e3a\u7a7a\uff1a\" + stack.isEmpty()); \/\/ \u8f93\u51fa\uff1afalse\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u5c0f\u7ed3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6808\u4f5c\u4e3a\u4e00\u79cd\u57fa\u7840\u6570\u636e\u7ed3\u6784\uff0c\u6838\u5fc3\u662f \u201c\u540e\u8fdb\u5148\u51fa\u201d \u7684\u7279\u6027\uff0c\u65e0\u8bba\u662f\u81ea\u5b9a\u4e49\u5b9e\u73b0\u8fd8\u662f\u4f7f\u7528 Java \u63d0\u4f9b\u7684 API\uff0c\u90fd\u9700\u8981\u638c\u63e1\u5176<code>push<\/code>\u3001<code>pop<\/code>\u7b49\u6838\u5fc3\u64cd\u4f5c\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6808\u5e38\u7528\u4e8e\u5b57\u7b26\u4e32\u5904\u7406\u3001\u8868\u8fbe\u5f0f\u8ba1\u7b97\u3001\u5386\u53f2\u8bb0\u5f55\u56de\u6eaf\u7b49\u573a\u666f\uff0c\u800c<code>ArrayDeque<\/code>\u662f\u6bd4<code>Stack<\/code>\u66f4\u63a8\u8350\u7684\u9009\u62e9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u5927\u5bb6\u5168\u9762\u7406\u89e3\u6808\u7684\u539f\u7406\u548c\u7528\u6cd5\uff0c\u5982\u679c\u6709\u4efb\u4f55\u7591\u95ee\u6216\u8865\u5145\uff0c\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u4ea4\u6d41\uff5e \u540e\u7eed\u6211\u8fd8\u4f1a\u5206\u4eab\u66f4\u591a Java \u96c6\u5408\u6846\u67b6\u7684\u77e5\u8bc6\u70b9\uff0c\u8bb0\u5f97\u5173\u6ce8\u6211\u7684\u535a\u5ba2\u54e6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u662f\u4e91\u626c\uff5e \u4eca\u5929\u60f3\u548c\u5927\u5bb6\u6df1\u5165\u804a\u804a Java \u4e2d\u7684\u6808\uff08Stack\uff09\u6570\u636e\u7ed3\u6784\u3002\u4f5c\u4e3a\u7f16\u7a0b\u4e2d\u6700\u57fa\u7840\u4e5f\u6700\u5e38\u7528\u7684\u6570<\/p>\n<div class=\"more-link\">\n\t\t\t\t <a href=\"https:\/\/yunyanglib.cn\/?p=1412\" class=\"link-btn theme-btn\"><span>Read More <\/span> <i class=\"fa fa-caret-right\"><\/i><\/a>\n\t\t\t<\/div>\n","protected":false},"author":1,"featured_media":1462,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[15],"class_list":["post-1412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-java"],"_links":{"self":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1412","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1412"}],"version-history":[{"count":3,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1412\/revisions"}],"predecessor-version":[{"id":1415,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1412\/revisions\/1415"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/media\/1462"}],"wp:attachment":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}