Enumerate subsets (Descending order)
(Mylib/Bit/enumerate_subsets_desc.cpp)

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• Last update: 2021-04-23 23:44:44+09:00
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Operations

Requirements

Notes

Problems

References

Verified with

• test/aoj/ITP2_11_C/main.desc.test.cpp

Code

#pragma once

namespace haar_lib {
  template <typename Func>
  void enumerate_subsets_desc(int a, const Func &f) {
    for (int t = a;; t = (t - 1) & a) {
      if (not f(t)) break;
      if (t == 0) break;
    }
  }
}  // namespace haar_lib

#line 2 "Mylib/Bit/enumerate_subsets_desc.cpp"

namespace haar_lib {
  template <typename Func>
  void enumerate_subsets_desc(int a, const Func &f) {
    for (int t = a;; t = (t - 1) & a) {
      if (not f(t)) break;
      if (t == 0) break;
    }
  }
}  // namespace haar_lib

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