Method dist

code/data-structures/kd_tree.cpp:7–10

    pt() {}
    pt(double c[K]) { rep(i,0,K) coord[i] = c[i]; }
    double dist(const pt &other) const {
      double sum = 0.0;
      rep(i,0,K) sum += pow(coord[i] - other.coord[i], 2.0);
      return sqrt(sum); } };
  struct cmp {
    int c;
    cmp(int _c) : c(_c) {}