{"id":199,"date":"2023-06-14T14:04:35","date_gmt":"2023-06-14T06:04:35","guid":{"rendered":"https:\/\/www.gzlcy.cn\/?p=199"},"modified":"2023-06-14T14:04:35","modified_gmt":"2023-06-14T06:04:35","slug":"qsort%e7%9a%84%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/www.gzlcy.cn\/?p=199","title":{"rendered":"qsort\u7684\u6392\u5e8f"},"content":{"rendered":"<p>\u597d\u7684\uff0c\u5173\u4e8eC\u8bed\u8a00\u4e2d\u4f7f\u7528qsort\u5bf9\u7ed3\u6784\u4f53<a href='https:\/\/www.gzlcy.cn\/?p=170' title='\u6570\u7ec4' target='_blank' rel=\"noopener\">\u6570\u7ec4<\/a>\u8fdb\u884c<a href='https:\/\/www.gzlcy.cn\/?p=150' title='\u6392\u5e8f' target='_blank' rel=\"noopener\">\u6392\u5e8f<\/a>\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u9996\u5148\uff0c\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u6bd4\u8f83<a href='https:\/\/www.gzlcy.cn\/?p=164' title='\u51fd\u6570' target='_blank' rel=\"noopener\">\u51fd\u6570<\/a>\uff0c\u7528\u4e8e\u6307\u5b9a\u6392\u5e8f\u7684\u89c4\u5219\u3002\u6bd4\u8f83\u51fd\u6570\u9700\u8981\u63a5\u6536\u4e24\u4e2a\u53c2\u6570\uff0c\u5206\u522b\u662f\u5f85\u6bd4\u8f83\u7684\u4e24\u4e2a\u7ed3\u6784\u4f53\u6307\u9488\uff0c\u8fd4\u56de\u4e00\u4e2a\u6574\u578b\u503c\u3002\u5982\u679c\u8fd4\u56de\u503c\u5c0f\u4e8e0\uff0c\u5219\u8868\u793a\u7b2c\u4e00\u4e2a\u53c2\u6570\u5e94\u8be5\u6392\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e4b\u524d\uff1b\u5982\u679c\u8fd4\u56de\u503c\u5927\u4e8e0\uff0c\u5219\u8868\u793a\u7b2c\u4e00\u4e2a\u53c2\u6570\u5e94\u8be5\u6392\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e4b\u540e\uff1b\u5982\u679c\u8fd4\u56de\u503c\u7b49\u4e8e0\uff0c\u5219\u8868\u793a\u4e24\u4e2a\u53c2\u6570\u76f8\u7b49\uff0c\u4e0d\u9700\u8981\u4ea4\u6362\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u6709\u5982\u4e0b\u7684\u7ed3\u6784\u4f53\u5b9a\u4e49\uff1a&#8220;`struct student {char name[20];int age;float score;};&#8220;`\u90a3\u4e48\u5bf9\u5e94\u7684\u6bd4\u8f83\u51fd\u6570\u53ef\u4ee5\u5b9a\u4e49\u5982\u4e0b\uff1a&#8220;`int cmp(const void* a, const void* b) {struct student* s1 = (struct student*)a;struct student* s2 = (struct student*)b;if (s1-&gt;score &gt; s2-&gt;score) {return -1;} else if (s1-&gt;score score) {return 1;} else {return 0;}}&#8220;`\u4e0a\u9762\u7684\u6bd4\u8f83\u51fd\u6570\u6307\u5b9a\u4e86\u6309\u7167\u5206\u6570\u4ece\u9ad8\u5230\u4f4e\u6392\u5e8f\u3002\u7136\u540e\uff0c\u5728\u4e3b\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u7ed3\u6784\u4f53\u6570\u7ec4\uff0c\u5e76\u4f7f\u7528qsort\u51fd\u6570\u8fdb\u884c\u6392\u5e8f\u3002qsort\u51fd\u6570\u9700\u8981\u56db\u4e2a\u53c2\u6570\uff0c\u5206\u522b\u662f\u5f85\u6392\u5e8f\u7684\u6570\u7ec4\u9996\u5730\u5740\u3001\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u3001\u6bcf\u4e2a\u5143\u7d20\u7684\u5927\u5c0f\u3001\u6bd4\u8f83\u51fd\u6570\u7684\u5730\u5740\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u5b9a\u4e49\u4e86\u5982\u4e0b\u7684\u7ed3\u6784\u4f53\u6570\u7ec4\uff1a&#8220;`struct student students[] = {{&#8220;Tom&#8221;, 18, 89},{&#8220;Bob&#8221;, 20, 78},{&#8220;Alice&#8221;, 19, 92},{&#8220;Mike&#8221;, 19, 83},{&#8220;Jack&#8221;, 18, 87},};int n = sizeof(students) \/ sizeof(struct student);&#8220;`\u90a3\u4e48\u5bf9\u5e94\u7684\u6392\u5e8f\u4ee3\u7801\u53ef\u4ee5\u5982\u4e0b\u7f16\u5199\uff1a&#8220;`qsort(students, n, sizeof(struct student), cmp);&#8220;`\u7ecf\u8fc7\u6392\u5e8f\u540e\uff0c\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6309\u7167\u6307\u5b9a\u7684\u89c4\u5219\u6392\u5217\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u5bf9int\u7c7b\u578b\u6570\u7ec4\u6392\u5e8fint num[100];Sample:int cmp ( const void *a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[254,349,350,210,255],"_links":{"self":[{"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/posts\/199"}],"collection":[{"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=199"}],"version-history":[{"count":0,"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=\/wp\/v2\/posts\/199\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gzlcy.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}