[{"type":"Heading1","children":[{"text":"Python vs C++ 常用函数对照"}],"slateId":"fT6uRbaLsSVxkSQ7KpxH9"},{"type":"Heading2","children":[{"text":"一、最值与求和"}],"slateId":"cPka7nwBLyZQndK4nY6XB"},{"type":"Heading3","children":[{"text":"1. 最大值/最小值"}],"slateId":"TKUMO4KRUmMzUsScA7oH_"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"NxfYePvwZu985D-PRPc4H"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"max(a, b, c) # 两个/多个数\nmin(nums) # 容器类型"}],"slateId":"IZS9wriu5wH8986Od-M02"}],"slateId":"_A2wMuDKyBiBdtMaFpm7E"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"U86RW5mZCjMIlgTwdkU4L"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \nint mn = std::min(a, b); // 两个数\nint mx2 = std::max({a, b, c}); // 多个数\nint mn3 = *std::min_element(nums.begin(), nums.end()); // 容器\nint mx4 = std::ranges::max(nums); // C++20 Ranges：直接传容器"}],"slateId":"8RkyiHwYYf9pyRV4-J0Vq"}],"slateId":"FAvFrpvlo9A5tQ39js6i4"},{"type":"Paragraph","children":[{"text":"max_element","code":true},{"text":"/"},{"code":true,"text":"min_element"},{"text":" 返回迭代器，因此需要 "},{"text":"*","code":true},{"text":" 解引用；"},{"text":"ranges::max","code":true},{"text":" 直接返回值。"}],"slateId":"YMH1imCkCfDYr_XgrjeEd"},{"type":"Heading3","children":[{"text":"2. 求和"}],"slateId":"w5wTrW-545vsetavWh9Dv"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"S9Arz1HHQqaG6whHatog-"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"total = sum(nums)"}],"slateId":"oFz5ZwUSpfrCTSnMHfIL8"}],"slateId":"pluDLklorBvr3jdUfgTyn"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"WMaJDKt0EjxvHK0qJGKK_"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \nint total = std::accumulate(nums.begin(), nums.end(), 0);\nlong long total2 = std::accumulate(nums.begin(), nums.end(), 0LL); // 结果可能超过 int 时"}],"slateId":"yu-4y73ib3vGwdTXj3MjH"}],"slateId":"7hnyOGeW2kiRXTWBD7iJg"},{"type":"Paragraph","children":[{"text":"accumulate","code":true},{"text":" 的返回类型由最后一个初始值决定，因此大数求和应使用 "},{"text":"0LL","code":true},{"text":"。"}],"slateId":"URhlhanrknvmWSYjoA9wp"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"OnY50pMZ2L1Jfy7yb7cDZ"},{"type":"Heading2","children":[{"text":"二、排序与翻转"}],"slateId":"IzINR5744QlNJmvJBEin7"},{"type":"Heading3","children":[{"text":"1. 排序"}],"slateId":"2EhB4XwtEvtZ9QZ0sl0O4"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"7B01BQ7RJRgar9feK-W08"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"nums.sort()\nnums.sort(reverse=True)\nnew_nums = sorted(nums)"}],"slateId":"JNQ07YkGVPmeTynt7d5oQ"}],"slateId":"o6jvN4u83bAYBsFebOiRg"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"uKDaaEXpQEZWFnVurU5nh"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n#include \nstd::sort(nums.begin(), nums.end()); // 升序\nstd::sort(nums.begin(), nums.end(), std::greater<>()); // 降序\n\nstd::ranges::sort(nums); // C++20 Ranges\nstd::ranges::sort(nums, std::greater<>());"}],"slateId":"GY4edfLASBrw8vcjP4wgY"}],"slateId":"jooF7m5vJeMsDcyHFjiYw"},{"type":"Paragraph","children":[{"text":"C++ 中数组排序只可以原地修改，若想要保留原数组需要提前创建副本。"}],"slateId":"2I6JDAz4FgxYF21U0m-OZ"},{"type":"Heading3","slateId":"QWVSQdHuKAPIUomv6CMUY","children":[{"text":"2. 翻转"}]},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"19e5jK79UXyjTnKHQSYr7"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"nums.reverse()\nnew_nums = nums[::-1]"}],"slateId":"GnRaOY4T255kNb4VPoTJG"}],"slateId":"pbFc-ZMih-WIzFweS2lLF"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"rPJCxFoIgD2J-EvW0LLB-"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \nstd::reverse(nums.begin(), nums.end());\n\nstd::ranges::reverse(nums); // C++20 Ranges"}],"slateId":"4HOld-uFJpKK8a9pNcKtq"}],"slateId":"cCHZFck7xPTHyDxKsavNc"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"CScIxqGxKApLASTc6kHvN"},{"type":"Heading2","children":[{"text":"三、二分查找"}],"slateId":"ZTqV-ImNn0N9KvgC5x4bO"},{"type":"Heading3","slateId":"XzZ5xjccJrqlJPw_5uocA","children":[{"text":"1. 查找第一个大于等于x位置"}]},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"Eu3j51GHNckVsXcKAPCRf"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"from bisect import bisect_left\ni = bisect_left(nums, x)"}],"slateId":"lpcBdhmfwZ1kIoOIsmfI6"}],"slateId":"j2TekGutPlxNudUSw5bTB"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"OkISrjEjSz5O0Mg7Fl8Mz"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\nauto it = std::lower_bound(nums.begin(), nums.end(), x); // 返回迭代器\n\nint i = std::lower_bound(nums.begin(), nums.end(), x) - nums.begin(); // 转换成下标\n\nauto it2 = std::ranges::lower_bound(nums, x); // C++20 Ranges"}],"slateId":"5LhK9cfee3yoaBFH_S8Zj"}],"slateId":"qqhiXxsvC2wFIWVHUDGby"},{"type":"Paragraph","children":[{"text":"lower_bound","code":true},{"text":" 对应 "},{"text":"bisect_left","code":true},{"text":"，查找第一个 "},{"text":">= x","code":true},{"text":" 的位置。"}],"slateId":"YeTEQ2lgX1EZdaLJB8Y1z"},{"type":"Heading3","children":[{"text":"2. 查找第一个大于 x 的位置"}],"slateId":"9_1gyj2iH3gixrJ9Vv_B7"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"Bq6VFWO5zVS8h71blkMKn"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"from bisect import bisect_right\ni = bisect_right(nums, x)"}],"slateId":"aKr6mzZgYhVonWakJxLMP"}],"slateId":"AH0BTTZCM3TnZJZej9AKQ"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"GjmHuewdmgp0FtoZ0LnaV"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\nauto it = std::upper_bound(nums.begin(), nums.end(), x);\n\nint i = std::upper_bound(nums.begin(), nums.end(), x) - nums.begin();\n\nauto it2 = std::ranges::upper_bound(nums, x);"}],"slateId":"kRzSQeGM8Wkds4LNJ_cPy"}],"slateId":"W-p5RnPQqJSe5TpxzAJiH"},{"type":"Paragraph","children":[{"text":"upper_bound","code":true},{"text":" 对应 "},{"text":"bisect_right","code":true},{"text":"，查找第一个 "},{"text":"> x","code":true},{"text":" 的位置。"}],"slateId":"nj9QJs43YeFevUWI5QNMm"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"faUM-YCIBFh2WNXI3w9aF"},{"type":"Heading2","children":[{"text":"四、统计与查找"}],"slateId":"KcYHYmziqTyZBmNf1CsF_"},{"type":"Heading3","children":[{"text":"1. 统计元素出现次数"}],"slateId":"wyyBZRNkY3OS9KYqR0BYT"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"7uBqjS0TUPa0fU7etCqBI"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"cnt = nums.count(x)\nzero = s.count('0')"}],"slateId":"CP_nWjPo_KMS6-lOJGKYS"}],"slateId":"Zqg0OqsLqrw9LlNBr5E0v"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"oK2T2O-rJG2AsrleX61kH"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\nint cnt = std::count(nums.begin(), nums.end(), x);\nint zero = std::count(s.begin(), s.end(), '0');\n\nint cnt2 = std::ranges::count(nums, x); // C++20 Ranges"}],"slateId":"ewwJt43s-BtPhecitc2by"}],"slateId":"3oidEHmHhSRJk5HVxS9Fo"},{"type":"Heading3","children":[{"text":"2. 判断元素是否存在"}],"slateId":"NrfeJ3jAGOrxaNXj1ZaVd"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"XzHbssVF4F8SIJCK40OWs"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"exists = x in nums"}],"slateId":"blCgRO5yoR01EfAHvFTIX"}],"slateId":"fJrSXAG4HCFV6D_IXtkb1"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"-LRRIg_KWB1hMucUAdjDs"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\nbool exists = std::find(nums.begin(), nums.end(), x) != nums.end();\n\nbool exists2 = std::ranges::find(nums, x) != nums.end(); // C++20 Ranges"}],"slateId":"UpinzHxRKHH3ex_j5FTZ9"}],"slateId":"ywLGti3bRZtfnaFpJMaBd"},{"type":"Paragraph","children":[{"text":"已排序容器可以使用二分判断："}],"slateId":"OgQljzfzf8qkNMlsi0Wko"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\nbool exists = std::binary_search(nums.begin(), nums.end(), x);\n\nbool exists2 = std::ranges::binary_search(nums, x); // C++20 Ranges"}],"slateId":"csY7IxsKVZuRGWX0BZ0fE"}],"slateId":"sD1eZLmNvoRXKCEYh6SQx"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"mHcp9n7KmASvlV7gHy9KC"},{"type":"Heading2","children":[{"text":"五、连续序列与累计序列"}],"slateId":"7AhAnQp2CDqz4Kvxa9Z3n"},{"type":"Heading3","children":[{"text":"1. 生成连续整数"}],"slateId":"U3OY9DRU0guJ8JxQeda-w"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"KgYe6FOimA9OBK6oEUiIw"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"nums = list(range(n))\nnums = list(range(1, n + 1))"}],"slateId":"mNrSd49tIk9F0i2pRPDJD"}],"slateId":"4iAJKArHKiLS1qowGAYkv"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"f_XAHFVjtua2iwyrYl49k"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\nstd::vector nums(n);\nstd::iota(nums.begin(), nums.end(), 0); // 0, 1, 2, ..., n - 1\n\nstd::vector nums2(n);\nstd::iota(nums2.begin(), nums2.end(), 1); // 1, 2, 3, ..., n"}],"slateId":"RTYcZIMTEFvC2ai3dX7xk"}],"slateId":"8_8PiPsWWwMsm6XcJD_ut"},{"type":"Heading3","children":[{"text":"2. 前缀累计"}],"slateId":"6CQtCtJiKlA-TUKSfcZym"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"C8jeuJYxvP7xZ3H1qjPcp"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"from itertools import accumulate\npre = list(accumulate(nums))\npre = list(accumulate(nums, initial=0))"}],"slateId":"Gbq3quezdU02kkot_5tfw"}],"slateId":"VOchjk5Lo1XvQpCWkQn6S"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"ojLz7-EO3NNnDZynYj7pH"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\n// 不包含初始 0\nstd::vector pre(nums.size());\nstd::partial_sum(nums.begin(), nums.end(), pre.begin());\n\n// 包含初始 0\nstd::vector pre2(nums.size() + 1, 0);\nstd::partial_sum(nums.begin(), nums.end(), pre2.begin() + 1);"}],"slateId":"Qi8TuSqXLjiEnD_VuofEx"}],"slateId":"vAt6R28SYZkRaD0SXFLQw"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"GWwb3kPzBWwjP4tHAQ9et"},{"type":"Heading2","children":[{"text":"六、字符串与数值转换"}],"slateId":"PsBBscohb2YoG1vPlXumw"},{"type":"Heading3","children":[{"text":"1. 数值与字符串转换"}],"slateId":"uSuDzPNuPOYGDjvC-0UKJ"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"2Mym_ZVXkZExlEagFLSGo"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"s = str(x)\nx = int(s)"}],"slateId":"wztOuBqALhH7B0IqoKcxI"}],"slateId":"nU992sM35NldzdkXGnGE5"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"5Wf_j6Pkpui8Pg0zDkR_v"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n\nstd::string s = std::to_string(x);\n\nint x1 = std::stoi(s);\nlong long x2 = std::stoll(s);\ndouble x3 = std::stod(s);"}],"slateId":"bs0rAqd8JpXCC_rRC0T2C"}],"slateId":"-DsRqwtnNeFmch-ojQ748"},{"type":"Heading3","children":[{"text":"2. 截取子串"}],"slateId":"EW_hvLDs-0B42CynHrlak"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"K4xuwqfpEr6-Qw5TW5Tn8"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"part = s[l:r]"}],"slateId":"N9PkDAUSYvp8ZZNMFXK8I"}],"slateId":"H2sydDebMuVqZMHT4lcc6"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"2MyUkT3WoSqzbwF2ZbGUU"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \nstd::string part = s.substr(l, r - l); // substr(起点, 长度)"}],"slateId":"Qhsa-Q6ZhFDuzrnBsXbu2"}],"slateId":"en0eKCd3AchCx03czCxgq"},{"type":"Heading3","children":[{"text":"3. 字符串长度与查找"}],"slateId":"wEbF-cOyQhssV7RvRSxkW"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"4JOSvTo4ZhHhaWxFb8Opx"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"n = len(s)\ni = s.find(sub)"}],"slateId":"8so-MgvN2vzN9kJibBpau"}],"slateId":"1WhWpnZrBOPdVr8Hjlw8j"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"4rIB4NCWs59zxrVsNzh5E"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n\nint n = static_cast(s.size());\nstd::size_t i = s.find(sub);\n\n// 未找到\nif (i == std::string::npos) {\n // ...\n}"}],"slateId":"dMke_WnXDi_-0VVwnpaoa"}],"slateId":"gK8j6JeKfHD3BwHMu2mlv"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"qvz03Q8zXIHSczCopZCe3"},{"type":"Heading2","children":[{"text":"七、常用数学函数"}],"slateId":"Km3TkBBsAu3nKe8AVv4OD"},{"type":"Heading3","children":[{"text":"1. 平方根、绝对值与幂"}],"slateId":"dMh7Hz-29LoRDPuhwGQIp"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"aCDEFp3CgkGNqeOv9uwIQ"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"import math\n\nroot = math.sqrt(x)\nvalue = abs(x)\npower = a ** b"}],"slateId":"ayYGv7VINpd5De7U8rIxl"}],"slateId":"67E8-tNMpHhNZO6PPtp7r"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"7ZbYqp_9jqErTWLP7mQpV"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n\ndouble root = std::sqrt(x);\nint value = std::abs(x);\ndouble power = std::pow(a, b);\n\n// 整数平方优先直接相乘\nlong long square = 1LL * x * x;"}],"slateId":"XCd-nYnKaje6JbqMh94kQ"}],"slateId":"OS9LCwS3NM0RKxaKQNu8-"},{"type":"Paragraph","children":[{"text":"pow","code":true},{"text":" 通常返回浮点数，整数平方或固定小次幂优先使用乘法。"}],"slateId":"tZnNowWQHz_FtAYaTXrtU"},{"type":"Heading3","children":[{"text":"2. 最大公约数与最小公倍数"}],"slateId":"h0koB_SLg1rwE5RIsW1nW"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"NipT03NhKpzG75BDPyNDe"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"import math\ng = math.gcd(a, b)\nl = math.lcm(a, b)"}],"slateId":"33cd5ft3-zjEXyyeP6ssj"}],"slateId":"nYRAlanvUR2DD99h6NzAX"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"Z2izTd9LwwrkK9gZ8xS6k"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \nint g = std::gcd(a, b);\nint l = std::lcm(a, b);"}],"slateId":"i1tLXCwH_U3YnuJBG74lF"}],"slateId":"U4tC9nxMfmDfu6AQ_ciim"},{"type":"HorizontalRule","children":[{"text":""}],"slateId":"Uz6lAqT4HlUO9sIVwawtn"},{"type":"Heading2","children":[{"text":"八、位运算"}],"slateId":"MT0F0IgQiWAH6e5sKsXRR"},{"type":"Heading3","children":[{"text":"1. 基本位运算"}],"slateId":"IokYYuXk26DyzCRi92amm"},{"type":"Paragraph","children":[{"text":"Python/C++ 基本一致："}],"slateId":"u_XDIgB-zG_4A_5YS2oMh"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"x << k\nx >> k\n\nx & y\nx | y\nx ^ y\n~x"}],"slateId":"VLIftulOuJWUvBPrLArp3"},{"type":"CodeTab","name":"","language":"cpp","children":[{"text":"x << k;\nx >> k;\n\nx & y;\nx | y;\nx ^ y;\n~x;"}],"slateId":"0Akh5WZO02WvV311fU-3A"}],"slateId":"N0v97hr5QXADV1PH0RU4E"},{"type":"Heading3","children":[{"text":"2. 常用位操作"}],"slateId":"p7_RPd0yYw9-NOyH2Gdjp"},{"type":"Paragraph","children":[{"text":"Python/C++ 基本一致："}],"slateId":"J1hILIEe7HD_EKdzUZqGp"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"bit = (x >> i) & 1\n\nx |= 1 << i\nx &= ~(1 << i)\nx ^= 1 << i\n\nlowbit = x & -x\nx &= x - 1"}],"slateId":"SQx0rdyzDJXM3CwUzONeF"},{"type":"CodeTab","name":"","language":"cpp","children":[{"text":"int bit = (x >> i) & 1;\n\nx |= 1 << i; // 设置第 i 位\nx &= ~(1 << i); // 清除第 i 位\nx ^= 1 << i; // 翻转第 i 位\n\nint lowbit = x & -x;\nx &= x - 1; // 删除最低位的 1"}],"slateId":"nLnQ8snHliPkvlqG-ddWB"}],"slateId":"WFmoH7Ng1vYd-3_1GXuPm"},{"type":"Heading3","children":[{"text":"3. 二进制位数与 1 的数量"}],"slateId":"nE14JsAwdYJKy_QygvZmY"},{"type":"Paragraph","children":[{"text":"Python："}],"slateId":"zS7_7DyxOKL82lQXgQ7wJ"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"python","name":"","children":[{"text":"width = x.bit_length()\nones = x.bit_count()"}],"slateId":"RYdYHHFtwBonE_yAz4-4S"}],"slateId":"VMf2IPSK_DhCcJwAskO_I"},{"type":"Paragraph","children":[{"text":"C++："}],"slateId":"61Ng0YmCmQy09rKIo6VTw"},{"type":"CodeBlock","activeTabIndex":0,"children":[{"type":"CodeTab","language":"cpp","name":"","children":[{"text":"#include \n#include \n\n// C++20，参数要求无符号整数\nint width = std::bit_width(static_cast(x));\nint ones = std::popcount(static_cast(x));\n\n// 其他常用函数\nint trailing = std::countr_zero(static_cast(x));\nint leading = std::countl_zero(static_cast(x));"}],"slateId":"IDEE_n3Ic5zaA8wX2l_-B"}],"slateId":"Tp_wZe_8XzNWDeRVNX2RI"},{"type":"Paragraph","children":[{"text":"bit_width","code":true},{"text":" 中的类型转换是把参数转成无符号类型，不是在指定返回类型。"}],"slateId":"HjPY-Fs_7lNIXHhXrih-3"},{"type":"HorizontalRule","slateId":"vajK-8JmOdzYmEU33eOYQ","children":[{"text":""}]},{"type":"Heading2","children":[{"text":"其他相关内容"}],"slateId":"acRQFbWkqpA4tLiXuPv1P"},{"type":"Paragraph","slateId":"7wWSq0j7qfLforbsk9Uvx","children":[{"text":""},{"type":"LcLink","href":"https://leetcode.cn/discuss/post/3991967/pythonc-ji-chu-shu-ju-jie-gou-yong-fa-du-xx6y/","children":[{"text":""}],"slateId":"9XckE4v-OrLdJBP4GGOFJ"},{"text":""}]},{"type":"Paragraph","children":[{"text":"欢迎扣友评论区完善补充！"}],"slateId":"fl9tXHZ2n8xIOYsdnNqq5"},{"type":"Paragraph","children":[{"text":""}],"slateId":"XFQSs4qYmnHQsnEpGwyJl"}]