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root/OpenMD/trunk/src/utils/next_combination.hpp
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Comparing trunk/src/utils/next_combination.hpp (file contents):
Revision 184 by tim, Thu Oct 28 20:41:18 2004 UTC vs.
Revision 188 by tim, Thu Oct 28 22:26:32 2004 UTC

# Line 24 | Line 24
24   */
25  
26   /**
27 < * @file GenerateCombination.hpp
27 > * @file next_combination.hpp
28   * @author    tlin
29   * @date  10/27/2004
30   * @version 1.0
# Line 39 | Line 39 | namespace oopse {
39   namespace oopse {
40  
41   /**
42 – * @fn bool next_combination(IteratorContainer<RandomAccessIterator>& iterContainer, RandomAccessIterator first, RandomAccessIterator last)
42   * @brief STL next_permuationtation like combination sequence generator.
43 < * Given the first and last iterator of a sequence, next_combination iteratively generates all possible combination.
43 > * Given the first and last iterator of a sequence, next_combination iteratively generates all
44 > * possible combinations.
45 > * @return if more combination is availiable, otherwise return false
46   * @param iterContainer iterator container
47   * @param first the first iterator
48   * @param last the last iterator
49 < * @note first and last must be random access iterators and iterContainer must be the container which
50 < * element is iterator. And all of the iteratos in iterContainer must be within the range [first, last)
49 > * @note first and last must be random access iterators and iterContainer must be the container of  
50 > * random access iterators . And all of the iteratos in iterContainer must be within the range [first, last)
51   *
52   * @code
53   * std::vector<int> iv;
# Line 63 | Line 64 | namespace oopse {
64   * //1
65   * //8
66   * //1  8
67 + * @endcode
68   */
69   template<class RandomAccessIterator, template<typename ELEM, typename = std::allocator<ELEM> > class IteratorContainer>
70   bool next_combination(IteratorContainer<RandomAccessIterator>& iterContainer, RandomAccessIterator first, RandomAccessIterator last) {
# Line 78 | Line 80 | bool next_combination(IteratorContainer<RandomAccessIt
80          iterContainer.insert(iterContainer.end(), first);
81          return true;
82      } else if (*(--i) != endIter){
83 <        //if the last iterator in iterContainer does not reaches the end, just increment it
83 >        //if the last iterator in iterContainer does not reaches the end, just increase its iterator by 1
84          ++(*i);
85          return true;
86      } else {// the last iterator in iterContainer does not reaches the end
87  
88          //starts at the end of the sequence and works its way towards the front, looking for two
89          //consecutive members of the sequence where the difference between them is greater
90 <        //than one. For example , if the sequence contains 1, 5, 8, 9 (total number is 10, begin
91 <        //index is 0, therefore 9 is the end index, and the current size is 4). At the end of while
90 >        //than one. For example , if the sequence contains 1, 5, 8, 9 (total number is 10, first is 0
91 >        //and the last is 10 (due to STL's half open range)). At the end of while
92          //loop, j will point to 5, and i will point to 8, next combination should be 1, 6, 7, 8.
93          //If j is less than zero, it means it already reaches the last combination of current size.
94          //For instance, sequence may contain 6, 7, 8, 9 at this time, we need to increase the size
# Line 128 | Line 130 | bool next_combination(IteratorContainer<RandomAccessIt
130      }
131   } //end next_combination
132  
133 + /**
134 + * @brief iteratively replace the sequence with wild cards
135 + * @return true if more combination sequence is avaliable, otherwise return true
136 + * @param cont iterator container, if expect the whole series of combinations,  pass an empty iterator
137 + * container. The user should not modify this iterator container
138 + * @param sequence the whole sequence used to generate combination
139 + * @param result a possible combination sequence which is set on return
140 + * @param wildCard the wild card string. Its value is "X" by default
141 + * @note since next_combination never returns an empty sequence, replaceWildCard will not generate
142 + * one special combination, which is n identical wild cards (n is equal to the size of the passing sequence)
143 + *
144 + * @code
145 + * std::vector<std::string> sv;
146 + * std::vector<std::vector<std::string>::iterator> sic;
147 + * std::vector<std::string> resultString;
148 + * sv.push_back("H");
149 + * sv.push_back("C");
150 + * sv.push_back("N");
151 +
152 + * while (replaceWildCard(sic, sv, resultString)) {  
153 + *     for(std::vector<std::string>::iterator i = resultString.begin(); i != resultString.end(); ++i) {
154 + *         std::cout << *i << "\t";
155 + *     }
156 + *     std::cout << std::endl;
157 + * }
158 + * //output
159 + * //H X X
160 + * //X C X
161 + * //X X N
162 + * //H C X
163 + * //H X N
164 + * //X C N
165 + * //H C N
166 + @endcode
167 + */
168   bool replaceWildCard(std::vector<std::vector<std::string>::iterator>& cont,
169                                               std::vector<std::string>& sequence, std::vector<std::string>& result,
170                                               const std::string& wildCard = "X") {
# Line 147 | Line 184 | bool replaceWildCard(std::vector<std::vector<std::stri
184  
185       return hasMoreCombination;
186      
187 < }
187 > }//end replaceWildCard
188  
189   } //end namespace oopse
190   #endif //UTILS_NEXT_COMBINATION_HPP

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