EndFieldModel.cpp

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/*
 *  Copyright (c) 2017, Chris Rogers
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 *  2. Redistributions in binary form must reproduce the above copyright notice,
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 *     and/or other materials provided with the distribution.
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 *     prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#include <algorithm>
 
#include "AbsBeamline/EndFieldModel/EndFieldModel.h"
 
namespace endfieldmodel {
 
bool GreaterThan(std::vector<int> v1, std::vector<int> v2) {
  size_t n1(v1.size()), n2(v2.size());
  for (size_t i = 0; i < n1 && i < n2; ++i) {
    if (v1[n1-1-i] > v2[n2-1-i]) return true;
    if (v1[n1-1-i] < v2[n2-1-i]) return false;
  }
  return false;
}
 
std::vector< std::vector<int> > CompactVector(
                              std::vector< std::vector<int> > vec) {
  // first sort the list
  std::sort(vec.begin(), vec.end(), GreaterThan);
  // now look for n = n+1
  for (size_t j = 0; j < vec.size()-1; ++j) {
    while (j < vec.size()-1 && IterableEquality(
                              vec[j].begin()+1, vec[j].end(),
                              vec[j+1].begin()+1, vec[j+1].end()) ) {
      vec[j][0] += vec[j+1][0];
      vec.erase(vec.begin()+j+1);
    }
  }
  return vec;
}
 
}