other/random-number-generator.hpp

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• Last update: 2022-09-11 00:53:50+09:00
• Include: #include "other/random-number-generator.hpp"

Code

struct RandomNumberGenerator {
  mt19937 mt;

  RandomNumberGenerator() : mt(chrono::steady_clock::now().time_since_epoch().count()) {}

  int operator()(int a, int b) { // [a, b)
    uniform_int_distribution< int > dist(a, b - 1);
    return dist(mt);
  }

  int operator()(int b) { // [0, b)
    return (*this)(0, b);
  }
};

#line 1 "other/random-number-generator.hpp"
struct RandomNumberGenerator {
  mt19937 mt;

  RandomNumberGenerator() : mt(chrono::steady_clock::now().time_since_epoch().count()) {}

  int operator()(int a, int b) { // [a, b)
    uniform_int_distribution< int > dist(a, b - 1);
    return dist(mt);
  }

  int operator()(int b) { // [0, b)
    return (*this)(0, b);
  }
};

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