Enumerate subsets (Between)
(Mylib/Bit/enumerate_subsets_between.cpp)

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

Operations

Requirements

Notes

Problems

References

Code

#pragma once

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

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

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

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