{"id":1511,"date":"2026-05-16T00:37:35","date_gmt":"2026-05-15T16:37:35","guid":{"rendered":"http:\/\/wordpress.fangt.online\/?p=1511"},"modified":"2026-05-23T15:43:41","modified_gmt":"2026-05-23T07:43:41","slug":"%e4%bd%8d%e8%bf%90%e7%ae%97%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"http:\/\/wordpress.fangt.online\/index.php\/2026\/05\/16\/%e4%bd%8d%e8%bf%90%e7%ae%97%e5%ae%9e%e6%88%98\/","title":{"rendered":"\u4f4d\u8fd0\u7b97\u5b9e\u6218"},"content":{"rendered":"\n

\u4f4d\u8fd0\u7b97\u7b26<\/h2>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u540d\u79f0<\/th>\u8fd0\u7b97\u89c4\u5219<\/th>\u8bb0\u5fc6\u53e3\u8bc0<\/th><\/tr><\/thead>
&<\/code><\/td>\u6309\u4f4d\u4e0e<\/td>\u4e24\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u90fd\u4e3a1\u65f6\u7ed3\u679c\u4e3a1\uff0c\u5426\u5219\u4e3a0<\/td>\u51681\u51fa1\uff0c\u67090\u51fa0<\/td><\/tr>
|<\/code><\/td>\u6309\u4f4d\u6216<\/td>\u4e24\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u90fd\u4e3a0\u65f6\u7ed3\u679c\u4e3a0\uff0c\u5426\u5219\u4e3a1<\/td>\u67091\u51fa1\uff0c\u51680\u51fa0<\/td><\/tr>
^<\/code><\/td>\u6309\u4f4d\u5f02\u6216<\/td>\u4e24\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u76f8\u540c\u65f6\u7ed3\u679c\u4e3a0\uff0c\u4e0d\u540c\u65f6\u7ed3\u679c\u4e3a1<\/td>\u76f8\u540c\u4e3a0\uff0c\u4e0d\u540c\u4e3a1<\/td><\/tr>
~<\/code><\/td>\u6309\u4f4d\u53d6\u53cd<\/td>\u5355\u76ee\u8fd0\u7b97\u7b26\uff0c0\u53d81\uff0c1\u53d80\uff08\u5305\u542b\u7b26\u53f7\u4f4d<\/strong>\uff09<\/td>\u5168\u90e8\u7ffb\u8f6c<\/td><\/tr>
<<<\/code><\/td>\u5de6\u79fb<\/td>\u9ad8\u4f4d\u4e22\u5f03\uff0c\u4f4e\u4f4d\u88650<\/td>\u4e582<\/mn>n<\/mi><\/msup><\/mrow><\/semantics><\/math>2n<\/em><\/td><\/tr>
>><\/code><\/td>\u53f3\u79fb<\/td>\u4f4e\u4f4d\u4e22\u5f03\uff0c\u9ad8\u4f4d\u8865\u7b26\u53f7\u4f4d<\/strong>\uff08\u7b97\u672f\u53f3\u79fb\uff09<\/td>\u96642<\/mn>n<\/mi><\/msup><\/mrow><\/semantics><\/math>2n<\/em>\uff08\u5411\u4e0b\u53d6\u6574\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u89c4\u5219\u4e0e\u8fd0\u7b97<\/h2>\n\n\n\n

\u6309\u4f4d\u4e0e\uff08&\uff09\uff1a\u6e05\u96f6\u4e0e\u622a\u53d6<\/h3>\n\n\n\n

\u6838\u5fc3\u6027\u8d28<\/strong>\uff1a<\/p>\n\n\n\n

    \n
  • x & 1<\/code>\uff1a\u53d6x\u7684\u6700\u4f4e\u4f4d\uff08\u5224\u65ad\u5947\u5076\uff09<\/li>\n\n\n\n
  • x & (~0 << n)<\/code>\uff1a\u5c06\u4f4en\u4f4d\u6e05\u96f6\uff08\u53f3\u4fa7\u4f4e\u4f4d\u5de6\u4fa7\u9ad8\u4f4d\uff09<\/li>\n\n\n\n
  • \u4e0e0\u8fd0\u7b97\uff1ax & 0 = 0<\/code><\/li>\n<\/ul>\n\n\n\n

    \u6309\u4f4d\u6216\uff08|\uff09\uff1a\u7f6e1\u64cd\u4f5c<\/h3>\n\n\n\n

    \u6838\u5fc3\u6027\u8d28<\/strong>\uff1a<\/p>\n\n\n\n

      \n
    • x | (1 << n)<\/code>\uff1a\u5c06\u7b2cn\u4f4d\u8bbe\u4e3a1<\/li>\n\n\n\n
    • \u62160\u4e0d\u6539\u53d8\uff1ax | 0 = x<\/code><\/li>\n<\/ul>\n\n\n\n

      \u6309\u4f4d\u5f02\u6216\uff08^\uff09\uff1a\u4e0d\u8fdb\u4f4d\u52a0\u6cd5\u4e0e\u4ea4\u6362<\/h3>\n\n\n\n

      \u6838\u5fc3\u6027\u8d28<\/strong>\uff08\u9ad8\u9891\u8003\u70b9\uff09\uff1a<\/p>\n\n\n\n

        \n
      • x ^ x = 0<\/code>\uff08\u81ea\u8eab\u5f02\u6216\u5f970\uff09<\/li>\n\n\n\n
      • x ^ 0 = x<\/code>\uff08\u4e0e0\u5f02\u6216\u4e0d\u53d8\uff09<\/li>\n\n\n\n
      • x ^ y ^ x = y<\/code>\uff08\u81ea\u53cd\u6027\uff09<\/li>\n\n\n\n
      • \u5f02\u6216\u6ee1\u8db3\u4ea4\u6362\u5f8b\u548c\u7ed3\u5408\u5f8b<\/li>\n<\/ul>\n\n\n\n

        \u4ea4\u6362\u7b97\u6cd5<\/h4>\n\n\n\n
            \/\/ \u4e34\u65f6\u53d8\u91cf\u4ea4\u6362\n    int temp = a;\n    a = b;\n    b = temp;\n\n    \/\/ \u5f02\u6216\u4ea4\u6362\uff08\u4e09\u6b65\u5f02\u6216\uff0c\u53ea\u9002\u7528\u6574\u6570\uff09\n    a = a ^ b;  \/\/ \u7b2c\u4e00\u6b65\uff1aa = a ^ b\n    b = a ^ b;  \/\/ \u7b2c\u4e8c\u6b65\uff1ab = (a ^ b) ^ b = a\n    a = a ^ b;  \/\/ \u7b2c\u4e09\u6b65\uff1aa = (a ^ b) ^ a = b\n\n    \/\/ \u52a0\u51cf\u6cd5\u4ea4\u6362\uff08\u53ef\u80fd\u6709\u6ea2\u51fa\u98ce\u9669\uff09\n    a = a + b;  \/\/ \u7b2c\u4e00\u6b65\uff1aa = a + b\n    b = a - b;  \/\/ \u7b2c\u4e8c\u6b65\uff1ab = (a+b) - b = a\n    a = a - b;  \/\/ \u7b2c\u4e09\u6b65\uff1aa = (a+b) - a = b<\/code><\/pre>\n\n\n\n
        \u5de6\u79fb\uff08<<\uff09\u4e0e\u53f3\u79fb\uff08>>\uff09\uff1a\u4e58\u96642\u7684\u5e42<\/h3>\n\n\n\n
        \u5de6\u79fb\u89c4\u5219<\/strong>\uff1a<\/p>\n\n\n\n
          \n
        • x << n<\/code> = x<\/mi>\u00d7<\/mo>2<\/mn>n<\/mi><\/msup><\/mrow><\/semantics><\/math><\/li>\n\n\n\n
        • \u9ad8\u4f4d\u4e22\u5f03\uff0c\u4f4e\u4f4d\u88650<\/li>\n\n\n\n
        • \u53ef\u80fd\u6539\u53d8\u7b26\u53f7\u4f4d\uff08\u6ea2\u51fa\uff09<\/li>\n<\/ul>\n\n\n\n
          \u53f3\u79fb\u89c4\u5219\uff08\u91cd\u70b9\uff01\uff09<\/strong>\uff1a<\/p>\n\n\n\n
            \n
          • \u6b63\u6570\u53f3\u79fb<\/strong>\uff1a\u9ad8\u4f4d\u88650\uff08\u903b\u8f91\u53f3\u79fb\uff09<\/li>\n\n\n\n
          • \u8d1f\u6570\u53f3\u79fb<\/strong>\uff1a\u9ad8\u4f4d\u88651\uff08\u7b97\u672f\u53f3\u79fb\uff0c\u4fdd\u6301\u7b26\u53f7\u4f4d\uff09<\/li>\n\n\n\n
          • x >> n<\/code>\u00a0=\u00a0\u230a<\/mo>x<\/mi>\u00f7<\/mo>2<\/mn>n<\/mi><\/msup>\u230b<\/mo><\/mrow><\/semantics><\/math>\uff08\u5411\u4e0b\u53d6\u6574\uff09<\/li>\n<\/ul>\n\n\n\n
            \u5e38\u7528\u516c\u5f0f\u53ca\u7528\u6cd5<\/h2>\n\n\n\n
            \u6052\u7b49\u5f0f<\/h3>\n\n\n\n
            \u64cd\u4f5c<\/th>\u7ed3\u679c<\/th>\u5e94\u7528\u573a\u666f<\/th><\/tr><\/thead>
            x & x<\/code><\/td>x<\/td>\u2014<\/td><\/tr>
            x | x<\/code><\/td>x<\/td>\u2014<\/td><\/tr>
            x ^ x<\/code><\/td>0<\/td>\u5224\u65ad\u76f8\u7b49\u3001\u53bb\u91cd<\/td><\/tr>
            x & 0<\/code><\/td>0<\/td>\u6e05\u96f6<\/td><\/tr>
            x | 0<\/code><\/td>x<\/td>\u2014<\/td><\/tr>
            x ^ 0<\/code><\/td>x<\/td>\u2014<\/td><\/tr>
            x & 1<\/code><\/td>x\u7684\u6700\u4f4e\u4f4d<\/td>\u5224\u65ad\u5947\u5076<\/td><\/tr>
            x << n<\/code><\/td>x<\/mi>\u00d7<\/mo>2<\/mn>n<\/mi><\/msup><\/mrow><\/semantics><\/math><\/td>\u5feb\u901f\u4e58<\/td><\/tr>
            x >> n<\/code><\/td>\u230a<\/mo>x<\/mi>\u00f7<\/mo>2<\/mn>n<\/mi><\/msup>\u230b<\/mo><\/mrow><\/semantics><\/math><\/td>\u5feb\u901f\u9664<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
            \u5224\u65ad\u5947\u5076<\/h3>\n\n\n\n
            if (a & 1) {\n    \/\/ a\u662f\u5947\u6570\n} else {\n    \/\/ a\u662f\u5076\u6570\n}<\/code><\/pre>\n\n\n\n
            \u5224\u65ad\u76f8\u7b49<\/h3>\n\n\n\n
            if ((a ^ b) == 0) {\n    \/\/ a == b\n}<\/code><\/pre>\n\n\n\n
            \u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7<\/h3>\n\n\n\n
            \u4ece\u9ad8\u5230\u4f4e\uff1a<\/p>\n\n\n\n
              \n
            1. ~<\/code>\uff08\u53d6\u53cd\uff09\u2014\u2014 \u540c!<\/code>\u3001++<\/code>\u7b49\u5355\u76ee\u8fd0\u7b97\u7b26<\/li>\n\n\n\n
            2. <<<\/code>\u3001>><\/code>\uff08\u79fb\u4f4d\uff09\u2014\u2014 \u6bd4\u52a0\u51cf\u6cd5\u4f4e<\/li>\n\n\n\n
            3. &<\/code>\uff08\u4e0e\uff09<\/li>\n\n\n\n
            4. ^<\/code>\uff08\u5f02\u6216\uff09<\/li>\n\n\n\n
            5. |<\/code>\uff08\u6216\uff09<\/li>\n\n\n\n
            6. &=<\/code>, ^=<\/code>, |=<\/code>, <<=<\/code>, >>=<\/code>\uff08\u590d\u5408\u8d4b\u503c\uff09<\/li>\n<\/ol>\n\n\n\n
              \u5e38\u89c1\u9677\u9631<\/h2>\n\n\n\n
              \u9677\u9631<\/th>\u9519\u8bef\u5199\u6cd5<\/th>\u6b63\u786e\u5199\u6cd5<\/th><\/tr><\/thead>
              \u4f18\u5148\u7ea7\u6df7\u6dc6<\/td>x & 3 == 1<\/code><\/td>(x & 3) == 1<\/code><\/td><\/tr>
              \u8d1f\u6570\u7684\u53f3\u79fb<\/td>\u8bef\u4ee5\u4e3a\u8d1f\u6570\u53f3\u79fb\u88650<\/td>\u8d1f\u6570\u53f3\u79fb\u88651<\/strong>\uff08\u7b97\u672f\u53f3\u79fb\uff09<\/td><\/tr>
              \u5bf9\u6709\u7b26\u53f7\u6570\u5de6\u79fb\u6ea2\u51fa<\/td>int << 31<\/code>\u53ef\u80fd\u53d8\u6210\u8d1f\u6570<\/td>\u6ce8\u610f\u8303\u56f4<\/td><\/tr>
              \u53d6\u53cd\u7b26\u53f7\u4f4d<\/td>\u4ee5\u4e3a~<\/code>\u4e0d\u5f71\u54cd\u7b26\u53f7\u4f4d<\/td>~<\/code>\u5bf9\u6240\u6709\u4f4d<\/strong>\u53d6\u53cd\uff0c\u5305\u62ec\u7b26\u53f7\u4f4d<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"
              \u4f4d\u8fd0\u7b97\u7b26 \u8fd0\u7b97\u7b26 \u540d\u79f0 \u8fd0\u7b97\u89c4\u5219 \u8bb0\u5fc6\u53e3\u8bc0 & \u6309\u4f4d\u4e0e \u4e24\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u90fd\u4e3a1\u65f6\u7ed3\u679c\u4e3a1\uff0c\u5426\u5219\u4e3a0 \u51681\u51fa […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-1511","post","type-post","status-publish","format-standard","hentry","category-zl"],"_links":{"self":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1511","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/comments?post=1511"}],"version-history":[{"count":2,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1511\/revisions"}],"predecessor-version":[{"id":1610,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1511\/revisions\/1610"}],"wp:attachment":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/media?parent=1511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/categories?post=1511"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/tags?post=1511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}