{"id":252,"date":"2019-06-11T21:43:24","date_gmt":"2019-06-11T13:43:24","guid":{"rendered":"http:\/\/www.changxuan.top\/?p=252"},"modified":"2021-04-15T17:20:24","modified_gmt":"2021-04-15T09:20:24","slug":"python-%e9%80%89%e6%8b%a9%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/www.changxuan.top\/?p=252","title":{"rendered":"[Python] \u9009\u62e9\u6392\u5e8f"},"content":{"rendered":"\n

\u4e0a\u4e00\u7bc7\u6587\u7ae0\u6211\u4eec\u5199\u4e86\u4e00\u4e2a\u4e8c\u5206\u67e5\u627e\u7684\u7b97\u6cd5\u5b9e\u73b0\u4ee3\u7801\u3002\u867d\u7136\u67e5\u627e\u7684\u6548\u7387\u662f\u76f8\u5f53\u7684\u9ad8\uff0c\u4f46\u662f\u5374\u6709\u4e00\u4e2a\u6bd4\u8f83\u91cd\u8981\u7684\u524d\u63d0\u6761\u4ef6\u5c31\u662f\u9488\u5bf9\u6709\u5e8f\u961f\u5217\u7684\u624d\u53ef\u4ee5\u4f7f\u7528\u4e8c\u5206\u67e5\u627e\u3002<\/p>\n\n\n\n

\u90a3\u4e48\u5e94\u8be5\u600e\u4e48\u4f7f\u5b83\u4eec\u6574\u6574\u9f50\u9f50\u7684\u6392\u597d\u961f\u7b49\u7740\u4f60\u627e\u5462\uff1f\u8fd9\u91cc\u6211\u4eec\u9996\u5148\u9009\u62e9\u9009\u62e9\u6392\u5e8f\u8fdb\u884c\u8bb2\u89e3\u3002\u773c\u82b1\u4e86\u6ca1\uff0c\u662f \u9009\u62e9\u6392\u5e8f<\/strong>\u3002<\/p>\n\n\n\n

\u867d\u7136\u8bf4\u201c\u5929\u4e0b\u6b66\u529f\uff0c\u552f\u5feb\u4e0d\u7834\u201d\uff0c\u90fd\u5728\u8ffd\u6c42\u901f\u5ea6\u6700\u5feb\u7684\u7b97\u6cd5\u3002\u5c3d\u7ba1\u9009\u62e9\u6392\u5e8f\u4e0d\u662f\u7efc\u5408\u6027\u80fd\u6700\u4f18\u7684\u67e5\u627e\u7b97\u6cd5\uff0c\u4f46\u6211\u4eec\u4e5f\u8981\u201c\u77e5\u5df1\u77e5\u5f7c\uff0c\u65b9\u80fd\u767e\u6218\u4e0d\u6b86\u201d\u3002\u9009\u62e9\u6392\u5e8f\u540d\u526f\u5176\u5b9e\uff0c\u4e3b\u8981\u5206\u4e3a\u4e24\u4e2a\u6b65\u9aa4\uff1a
<\/p>\n\n\n\n

  1. \u9009\u62e9<\/li>
  2. \u6392\u5e8f<\/li><\/ol>\n\n\n\n

    \u5e9f\u8bdd\u4e00\u7ba9\u7b50\uff0c\u4e3e\u4e2a\u4f8b\u5b50\u5c31\u662f\u5148\u4eceN\u4e2a\u4eba\u7ad9\u7684\u961f\u5217\u4e2d\u627e\u5230\u4e00\u4e2a\u6700\u9ad8\u7684\uff0c\u7136\u540e\u8ba9\u4ed6\u7ad9\u5230\u961f\u5217\u7684\u4e00\u7aef\u3002\u63a5\u7740\u5c31\u662f\u518d\u4ece\u4f59\u4e0b\u7684N-1\u4e2a\u4eba\u4e2d\u9009\u62e9\u4e00\u4e2a\u6700\u9ad8\u7684\uff0c\u8ba9\u4ed6\u6328\u7740\u7b2c\u4e00\u6b21\u9009\u51fa\u6765\u7684\u4eba\u3002\u4f9d\u6b21\u9009\u62e9\uff0c\u6700\u7ec8\u5c31\u4f1a\u5f62\u6210\u4e00\u4e2a\u6309\u9ad8\u77ee\u4e2a\u6392\u5217\u7684\u961f\u4f0d\u3002<\/p>\n\n\n\n

    \u6211\u4eec\u9996\u5148\u5229\u7528 python \u7684\u8bed\u8a00\u4f18\u52bf\u6765\u5b9e\u73b0\u4e00\u4e2a\u9009\u62e9\u6392\u5e8f\u7b97\u6cd5\uff1a<\/p>\n\n\n\n

    def find_min_num(arr): # \u4ece\u961f\u5217\u4e2d\u627e\u5230\u4e2a\u5b50\u6700\u5c0f\u7684\u540c\u5b66\n    min_num = arr[0]\n    min_index = 0\n    for i in range(1, len(arr)):\n        if arr[i] < min_num:\n            min_num = arr[i]\n            min_index = i\n    return min_index\n\ndef select_sort(arr): # \u4ece\u5c0f\u5230\u5927 \u9009\u62e9\u6392\u5e8f\n    sorted_arr = [] # \u5728\u64cd\u573a\u4e3a\u8fd9\u4e2a\u961f\u4f0d\u5f00\u8f9f\u4e00\u5757\u7528\u4e8e\u7ad9\u961f\u7684\u65b0\u5730\u65b9\n    for i in range(len(arr)): \n        min_num = find_min_num(arr) # \u4ece\u961f\u4f0d\u4e2d\u627e\u5230\u4e2a\u5b50\u6700\u5c0f\u7684\u540c\u5b66\n        sorted_arr.append(arr.pop(min_num)) # \u8ba9\u5c0f\u4e2a\u5b50\u540c\u5b66\u7ad9\u5230\u65b0\u5730\u65b9\n    return sorted_arr\n\nif __name__ == \"__main__\":\n    arr = [14,5,2,6,8,5,2,90,45]\n    print(select_sort(arr))<\/pre>\n\n\n\n
    \u4e0a\u9762\u7684\u4ee3\u7801\u7ed3\u6784\u5f88\u5bb9\u6613\u770b\u61c2\uff0c\u5f53\u7136\u4ee3\u4ef7\u4e5f\u662f\u5f88\u5927\u7684\uff01\u7531\u4e8e\u7a7a\u5217\u8868\uff08[]\uff09 \u4e5f\u4f1a\u5360\u4e2d\u5185\u5b58\u7a7a\u95f4\u6240\u4ee5\u6211\u4eec\u5e94\u8be5\u53bb\u6362\u4e2a\u601d\u8def\u53bb\u5b9e\u73b0\u7b97\u6cd5\u3002<\/p>\n\n\n\n
    \u9009\u62e9\u6392\u5e8f\u8fdb\u9636\u7248\uff1a<\/p>\n\n\n\n
    def select_sort_pro(arr): # \u4ece\u5927\u5230\u5c0f \u9009\u62e9\u6392\u5e8f\n    for i in range(len(arr)):\n        max_index = i # \u5c06\u7b2c\u4e00\u4e2a\u5143\u7d20\u6807\u8bb0\u4e3a\u6700\u5927\u7684\n        for j in range(i+1, len(arr)): # \u904d\u5386\u4e00\u904d\u67e5\u627e\u6700\u5927\u503c\u7684\u4e0b\u6807\n            if arr[max_index] < arr[j]:\n                max_index = j\n        if i != max_index: # \u5982\u679c\u5728\u540e\u9762\u7684\u6570\u503c\u4e2d\u6709\u6bd4\u5f53\u524d\u5927\u7684\u5c31\u4ea4\u6362\u503c\n            temp = arr[i]\n            arr[i] = arr[max_index]\n            arr[max_index] = temp\n    return arr\n\nif __name__ == \"__main__\":\n    arr = [14,5,2,6,8,5,2,90,45]\n    print(select_sort_pro(arr))<\/code><\/pre>\n\n\n\n
    \u5728\u8fdb\u9636\u7248\u672c\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u6ca1\u6709\u4f7f\u7528\u5217\u8868\u7684 pop() \u51fd\u6570\uff0c\u7136\u540e\u4e5f\u6ca1\u6709\u7533\u8bf7\u65b0\u7684\u5730\u65b9\u6765\u8fdb\u884c\u5b58\u50a8\u3002\u6240\u4ee5\u8fdb\u9636\u7248\u5b9e\u9a8c\u7b97\u6cd5\u6027\u80fd\u4e00\u5b9a\u597d\u4e8e\u7b2c\u4e00\u4e2a\u7248\u672c\u3002\u5f53\u7136\u51e1\u4e8b\u8bb2\u8bc1\u636e\uff0c\u6bdb\u7237\u7237\u8bf4\u8fc7\u201c\u6ca1\u6709\u8c03\u67e5\uff0c\u5c31\u6ca1\u6709\u53d1\u8a00\u6743\u201d\u3002\u5728\u8fd9\u91cc\u5c31\u662f\u6ca1\u6709\u5b9e\u9a8c\u5c31\u6ca1\u6709\u53d1\u8a00\u6743\u3002<\/p>\n\n\n\n
    \"\"
    \u65b9\u6cd5\u4e00 \u8fd0\u884c\u7ed3\u679c<\/figcaption><\/figure>\n\n\n\n
    \"\"
    \u65b9\u6cd5\u4e8c \u7ed3\u679c<\/figcaption><\/figure>\n\n\n\n
    \u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u5230\uff1a <\/p>\n\n\n\n