個数を数える
(cpp/array/search_util.hpp)

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• Last update: 2024-10-19 16:46:12+09:00
• Include: #include "cpp/array/search_util.hpp"

Depends on

• 共通ヘッダー (cpp/template/small_template.hpp)

Required by

• cpp/number_theory/factorize.hpp

Verified with

• cpp/verify/factorize.test.cpp
• cpp/verify/factorize2.test.cpp

Code

#pragma once
#include "template/small_template.hpp"

template <class T>
int count(const vector<T> &v, T value, int idx_begin = 0, int idx_end = -1) {
  if (idx_end == -1) {
    idx_end = v.size();
  }
  int cnt = 0;
  for (int i = idx_begin; i < idx_end; i++) {
    if (v[i] == value) {
      cnt++;
    }
  }
  return cnt;
}

/**
 * @brief 個数を数える
 *
 * @tparam T
 * @param v_sorted ソート済みでなければならない
 * @return vector<pair<T, int>> (値, 個数)
 */
template <class T> vector<pair<T, int>> counts(const vector<T> &v_sorted) {
  vector<pair<T, int>> ret;
  int s = v_sorted.size();
  for (int i = 0; i < s; i++) {
    if (i == 0 || ret.back().first != v_sorted[i]) {
      ret.emplace_back(v_sorted[i], 1);
    } else {
      ret.back().second++;
    }
  }
  return ret;
}

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
    bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus.py", line 187, in bundle
    bundler.update(path)
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 401, in update
    self.update(self._resolve(pathlib.Path(included), included_from=path))
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 260, in _resolve
    raise BundleErrorAt(path, -1, "no such header")
onlinejudge_verify.languages.cplusplus_bundle.BundleErrorAt: template/small_template.hpp: line -1: no such header

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