{"id":1401,"date":"2024-01-31T09:46:30","date_gmt":"2024-01-31T01:46:30","guid":{"rendered":"http:\/\/zyg.luchers.cn\/?p=1401"},"modified":"2024-01-31T09:46:30","modified_gmt":"2024-01-31T01:46:30","slug":"1047-%e5%88%a0%e9%99%a4%e5%ad%97%e7%ac%a6%e4%b8%b2%e4%b8%ad%e6%89%80%e6%9c%89%e7%9b%b8%e9%82%bb%e9%87%8d%e5%a4%8d%e9%a1%b9%e3%80%90%e7%ae%80%e5%8d%95%e3%80%91","status":"publish","type":"post","link":"http:\/\/zyg.luchers.cn\/index.php\/2024\/01\/31\/1047-%e5%88%a0%e9%99%a4%e5%ad%97%e7%ac%a6%e4%b8%b2%e4%b8%ad%e6%89%80%e6%9c%89%e7%9b%b8%e9%82%bb%e9%87%8d%e5%a4%8d%e9%a1%b9%e3%80%90%e7%ae%80%e5%8d%95%e3%80%91\/","title":{"rendered":"1047.\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u6240\u6709\u76f8\u90bb\u91cd\u590d\u9879\u3010\u7b80\u5355\u3011"},"content":{"rendered":"

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\u9898\u76ee<\/h2>\n

\u7ed9\u51fa\u7531\u5c0f\u5199\u5b57\u6bcd\u7ec4\u6210\u7684\u5b57\u7b26\u4e32 S\uff0c\u91cd\u590d\u9879\u5220\u9664\u64cd\u4f5c\u4f1a\u9009\u62e9\u4e24\u4e2a\u76f8\u90bb\u4e14\u76f8\u540c\u7684\u5b57\u6bcd\uff0c\u5e76\u5220\u9664\u5b83\u4eec\u3002<\/p>\n

\u5728 S \u4e0a\u53cd\u590d\u6267\u884c\u91cd\u590d\u9879\u5220\u9664\u64cd\u4f5c\uff0c\u76f4\u5230\u65e0\u6cd5\u7ee7\u7eed\u5220\u9664\u3002<\/p>\n

\u5728\u5b8c\u6210\u6240\u6709\u91cd\u590d\u9879\u5220\u9664\u64cd\u4f5c\u540e\u8fd4\u56de\u6700\u7ec8\u7684\u5b57\u7b26\u4e32\u3002\u7b54\u6848\u4fdd\u8bc1\u552f\u4e00\u3002<\/p>\n

\u793a\u4f8b\uff1a<\/p>\n

\u8f93\u5165\uff1a"abbaca"
\n\u8f93\u51fa\uff1a"ca"
\n\u89e3\u91ca\uff1a
\n\u4f8b\u5982\uff0c\u5728 "abbaca" \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5220\u9664 "bb" \u7531\u4e8e\u4e24\u5b57\u6bcd\u76f8\u90bb\u4e14\u76f8\u540c\uff0c\u8fd9\u662f\u6b64\u65f6\u552f\u4e00\u53ef\u4ee5\u6267\u884c\u5220\u9664\u64cd\u4f5c\u7684\u91cd\u590d\u9879\u3002\u4e4b\u540e\u6211\u4eec\u5f97\u5230\u5b57\u7b26\u4e32 "aaca"\uff0c\u5176\u4e2d\u53c8\u53ea\u6709 "aa" \u53ef\u4ee5\u6267\u884c\u91cd\u590d\u9879\u5220\u9664\u64cd\u4f5c\uff0c\u6240\u4ee5\u6700\u540e\u7684\u5b57\u7b26\u4e32\u4e3a "ca"\u3002<\/p>\n

\u63d0\u793a\uff1a<\/p>\n

1 <= S.length <= 20000
\nS \u4ec5\u7531\u5c0f\u5199\u82f1\u6587\u5b57\u6bcd\u7ec4\u6210\u3002<\/p>\n

\u601d\u8def<\/h2>\n

1\u3001\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u6808\u6765\u4f5c\u4e3a\u5bb9\u5668\u5b58\u50a8\u6570\u636e\u3002
\n2\u3001\u6211\u4eec\u628a\u5b57\u7b26\u4e32s\u6bcf\u4e2acharAt\u53d6\u51fa\uff0c\u7136\u540e\u5224\u65ad\u6808\u5982\u679c\u4e3a\u7a7a\uff0c\u6216\u8005\u6808\u7684\u5143\u7d20\u4e0d\u7b49\u4e8e\u5f53\u524d\u7684ch\uff0c\u5c31\u53ef\u4ee5\u5165\u6808
\n3\u3001\u7136\u540e\u6211\u4eec\u5c31\u53ef\u4ee5\u4e24\u4e24\u53d6\u51fa\u3002
\n4\u3001\u6700\u540e\u5269\u4e0b\u7684\u4e0d\u6ee1\u8db3\u6761\u4ef6\u7684\u5c31\u662f\u6211\u4eec\u9700\u8981\u7684\u5185\u5bb9\u3002
\n5\u3001\u6211\u4eec\u518d\u7528\u4e00\u4e2a\u5b57\u7b26\u4e32\u62fc\u63a5\u5c31\u662f\u7b54\u6848<\/p>\n

\u4ee3\u7801\u3010java\u3011<\/h2>\n
class Solution {\n    public String removeDuplicates(String s) {\n        Stack<Character> stack = new Stack<>();\n        char ch;\n        for(int i =0;i<s.length();i++){\n            \/\/ \u53d6\u51fas\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u5f00\u59cb\u5224\u65ad\n            ch = s.charAt(i);\n            \/\/ \u5982\u679c\u6808\u5185\u6ca1\u6709\u5143\u7d20\u6216\u8005\u53d6\u51fa\u7684\u5143\u7d20\u4e0d\u662f\u5f53\u524d\u7684ch\uff0c\u5c31\u53ef\u4ee5\u5165\u6808\n            if(stack.isEmpty() || stack.peek()!=ch){\n                stack.push(ch);\n                \/\/ \u5426\u5219\u6211\u4eec\u5c31\u53d6\u51fa\u8be5\u5143\u7d20\uff08\u56e0\u4e3a\u4e24\u4e24\u914d\u5bf9\u4e86\uff09\n            }else{\n                stack.pop();\n            }\n        }\n\n        \/\/ \u7ecf\u8fc7\u4e0a\u9762\u7684for\u5faa\u73af\u8fd9\u91cc\u7684\u5143\u7d20\u5c31\u662f\u6211\u4eec\u6240\u9700\u8981\u7684\u3002\u6211\u4eec\u76f4\u63a5\u5b57\u7b26\u4e32\u62fc\u63a5\uff0c\u641e\u5b9a\n        String res ="";\n        while(!stack.isEmpty()){\n            res = stack.pop()+res;\n        }\n        return res;\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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