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< a href = "connected__components_8cc.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2010-2018 Google LLC< / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > // Licensed under the Apache License, Version 2.0 (the " License" );< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > // you may not use this file except in compliance with the License.< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > // You may obtain a copy of the License at< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < span class = "comment" > // http://www.apache.org/licenses/LICENSE-2.0< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "comment" > // Unless required by applicable law or agreed to in writing, software< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "comment" > // distributed under the License is distributed on an " AS IS" BASIS,< / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.< / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "comment" > // See the License for the specific language governing permissions and< / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "comment" > // limitations under the License.< / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "comment" > // Licensed under the Apache License, Version 2.0 (the " License" );< / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "comment" > // you may not use this file except in compliance with the License.< / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "comment" > // You may obtain a copy of the License at< / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "comment" > // http://www.apache.org/licenses/LICENSE-2.0< / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "comment" > // Unless required by applicable law or agreed to in writing, software< / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "comment" > // distributed under the License is distributed on an " AS IS" BASIS,< / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "comment" > // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.< / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "comment" > // See the License for the specific language governing permissions and< / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "comment" > // limitations under the License.< / span > < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > // The following uses disjoint-sets algorithms, see:< / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "comment" > // https://en.wikipedia.org/wiki/Disjoint-set_data_structure#Disjoint-set_forests< / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "connected__components_8h.html" > ortools/graph/connected_components.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "preprocessor" > #include < numeric> < / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < / div >
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< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "preprocessor" > #include " < a class = "code" href = "stl__util_8h.html" > ortools/base/stl_util.h< / a > " < / span > < / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#ad8e718920ab9683d39af650d714cffe1" > 36< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "class_dense_connected_components_finder.html#ad8e718920ab9683d39af650d714cffe1" > DenseConnectedComponentsFinder::SetNumberOfNodes< / a > (< span class = "keywordtype" > int< / span > num_nodes) {< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_num_nodes = < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > ();< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "keywordflow" > if< / span > (num_nodes == old_num_nodes) {< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   }< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < a class = "code" href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > (num_nodes, old_num_nodes);< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "comment" > // Each new node starts as an isolated component:< / span > < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "comment" > // It has itself as root.< / span > < / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   parent_.resize(num_nodes);< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   std::iota(parent_.begin() + old_num_nodes, parent_.end(), old_num_nodes);< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "comment" > // It' s in an isolated component of size 1.< / span > < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   component_size_.resize(num_nodes, 1);< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "comment" > // Its rank is 0.< / span > < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   rank_.resize(num_nodes);< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > // This introduces one extra component per added node.< / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   num_components_ += num_nodes - old_num_nodes;< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   }< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > 54< / a > < / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > DenseConnectedComponentsFinder::FindRoot< / a > (< span class = "keywordtype" > int< / span > node) {< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (node, 0);< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < a class = "code" href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > (node, < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > ());< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "comment" > // Search the root.< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keywordtype" > int< / span > root = parent_[node];< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keywordflow" > while< / span > (parent_[root] != root) {< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   root = parent_[root];< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   }< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "comment" > // Apply path compression.< / span > < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "keywordflow" > while< / span > (node != root) {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > prev_parent = parent_[node];< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   parent_[node] = root;< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   node = prev_parent;< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   }< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "keywordflow" > return< / span > root;< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   }< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#ae6201f6f09303eabd7f77e238b4f3a44" > 73< / a > < / span >   < span class = "keyword" > const< / span > std::vector< int> & < a class = "code" href = "class_dense_connected_components_finder.html#ae6201f6f09303eabd7f77e238b4f3a44" > DenseConnectedComponentsFinder::GetComponentRoots< / a > () {< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > num_nodes = < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > ();< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "keywordflow" > if< / span > (num_nodes != num_nodes_at_last_get_roots_call_) {< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "comment" > // Add potential roots for each new node that did not exist the last time< / span > < / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "comment" > // GetComponentRoots() was called. The cost here is amortized against< / span > < / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < span class = "comment" > // adding the nodes in the first place.< / span > < / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > previous_num_roots = roots_.size();< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   roots_.resize(previous_num_roots + num_nodes -< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   num_nodes_at_last_get_roots_call_);< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   std::iota(roots_.begin() + previous_num_roots, roots_.end(),< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   num_nodes_at_last_get_roots_call_);< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   }< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "comment" > // Remove the roots that have been merged with other components. Each node< / span > < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "comment" > // only gets removed once from the roots vector, so the cost of FindRoot() is< / span > < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "comment" > // amortized against adding the edge.< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < a class = "code" href = "namespacegtl.html#a4afa1e83cd6407fa4b77d49b8c136806" > gtl::STLEraseAllFromSequenceIf< / a > (< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   & roots_, [& ](< span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > node) { < span class = "keywordflow" > return< / span > node != < a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node); });< / div >
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< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
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< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   num_nodes_at_last_get_roots_call_ = num_nodes;< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordflow" > return< / span > roots_;< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   }< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#a3bd75ea47488e500083fd8401d833f5d" > 96< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "class_dense_connected_components_finder.html#a3bd75ea47488e500083fd8401d833f5d" > DenseConnectedComponentsFinder::AddEdge< / a > (< span class = "keywordtype" > int< / span > node1, < span class = "keywordtype" > int< / span > node2) {< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "comment" > // Grow if needed.< / span > < / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > min_num_nodes = < a class = "code" href = "alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a" > std::max< / a > (node1, node2) + 1;< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < span class = "keywordflow" > if< / span > (min_num_nodes > < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > ()) {< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < a class = "code" href = "class_dense_connected_components_finder.html#ad8e718920ab9683d39af650d714cffe1" > SetNumberOfNodes< / a > (min_num_nodes);< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   }< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "comment" > // Just union the sets for node1 and node2.< / span > < / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "keywordtype" > int< / span > root1 = < a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node1);< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordtype" > int< / span > root2 = < a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node2);< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "comment" > // Already the same set.< / span > < / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "keywordflow" > if< / span > (root1 == root2) {< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   }< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < a class = "code" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (num_components_, 2);< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   --num_components_;< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > component_size = component_size_[root1] + component_size_[root2];< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "comment" > // Attach the shallowest tree to root of the deepest one. Note that this< / span > < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "comment" > // operation grows the rank of the new common root by at most one (if the two< / span > < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "comment" > // trees originally have the same rank).< / span > < / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "keywordflow" > if< / span > (rank_[root1] > rank_[root2]) {< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   parent_[root2] = root1;< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   component_size_[root1] = component_size;< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   parent_[root1] = root2;< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   component_size_[root2] = component_size;< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "comment" > // If the ranks were the same then attaching just grew the rank by one.< / span > < / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordflow" > if< / span > (rank_[root1] == rank_[root2]) {< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   ++rank_[root2];< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   }< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   }< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   }< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#a962b54327591b21cc0a9273f78906a8b" > 133< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "class_dense_connected_components_finder.html#a962b54327591b21cc0a9273f78906a8b" > DenseConnectedComponentsFinder::Connected< / a > (< span class = "keywordtype" > int< / span > node1, < span class = "keywordtype" > int< / span > node2) {< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < span class = "keywordflow" > if< / span > (node1 < 0 || node1 > = < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > () || node2 < 0 ||< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   node2 > = < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > ()) {< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   }< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node1) == < a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node2);< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   }< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#af783278e17675394e30c3de598b11169" > 141< / a > < / span >   < span class = "keywordtype" > int< / span > < a class = "code" href = "class_dense_connected_components_finder.html#af783278e17675394e30c3de598b11169" > DenseConnectedComponentsFinder::GetSize< / a > (< span class = "keywordtype" > int< / span > node) {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keywordflow" > if< / span > (node < 0 || node > = < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > ()) {< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   }< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keywordflow" > return< / span > component_size_[< a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node)];< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   }< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > < a class = "line" href = "class_dense_connected_components_finder.html#a74aadb96adc6f37110393d5fbd2279c5" > 148< / a > < / span >   std::vector< int> < a class = "code" href = "class_dense_connected_components_finder.html#a74aadb96adc6f37110393d5fbd2279c5" > DenseConnectedComponentsFinder::GetComponentIds< / a > () {< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   std::vector< int> component_ids(< a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > (), -1);< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "keywordtype" > int< / span > current_component = 0;< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > node = 0; node < < a class = "code" href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > GetNumberOfNodes< / a > (); ++node) {< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < span class = "keywordtype" > int< / span > & root_component = component_ids[< a class = "code" href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > FindRoot< / a > (node)];< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "keywordflow" > if< / span > (root_component < 0) {< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "comment" > // This is the first node in a yet unseen component.< / span > < / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   root_component = current_component;< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   ++current_component;< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   }< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   component_ids[node] = root_component;< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   }< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordflow" > return< / span > component_ids;< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   }< / div >
2020-09-01 16:00:33 +02:00
< div class = "ttc" id = "aalldiff__cst_8cc_html_a9d0c202d5fdd62f4fa2c613339ff168a" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a" > max< / a > < / div > < div class = "ttdeci" > int64 max< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00139" > alldiff_cst.cc:139< / a > < / div > < / div >
2020-11-18 14:53:30 +01:00
< div class = "ttc" id = "abase_2logging_8h_html_a7e03ec13560fa94a8fea569960d7efc6" > < div class = "ttname" > < a href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > < / div > < div class = "ttdeci" > #define CHECK_GT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00702" > base/logging.h:702< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_aae2dc65d9ea248d54bf39daa986dd295" > < div class = "ttname" > < a href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > < / div > < div class = "ttdeci" > #define DCHECK_GE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00889" > base/logging.h:889< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "abase_2logging_8h_html_ab62f5ed8f2d48e29802be0cbbcd1359a" > < div class = "ttname" > < a href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > < / div > < div class = "ttdeci" > #define DCHECK_LT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00888" > base/logging.h:888< / a > < / div > < / div >
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_a3bd75ea47488e500083fd8401d833f5d" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#a3bd75ea47488e500083fd8401d833f5d" > DenseConnectedComponentsFinder::AddEdge< / a > < / div > < div class = "ttdeci" > void AddEdge(int node1, int node2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00096" > connected_components.cc:96< / a > < / div > < / div >
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_a5484947d25c2901c60d02ea14d0e1a06" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#a5484947d25c2901c60d02ea14d0e1a06" > DenseConnectedComponentsFinder::FindRoot< / a > < / div > < div class = "ttdeci" > int FindRoot(int node)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00054" > connected_components.cc:54< / a > < / div > < / div >
2020-11-18 14:53:30 +01:00
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_a74aadb96adc6f37110393d5fbd2279c5" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#a74aadb96adc6f37110393d5fbd2279c5" > DenseConnectedComponentsFinder::GetComponentIds< / a > < / div > < div class = "ttdeci" > std::vector< int > GetComponentIds()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00148" > connected_components.cc:148< / a > < / div > < / div >
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_a962b54327591b21cc0a9273f78906a8b" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#a962b54327591b21cc0a9273f78906a8b" > DenseConnectedComponentsFinder::Connected< / a > < / div > < div class = "ttdeci" > bool Connected(int node1, int node2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00133" > connected_components.cc:133< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_ad8e718920ab9683d39af650d714cffe1" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#ad8e718920ab9683d39af650d714cffe1" > DenseConnectedComponentsFinder::SetNumberOfNodes< / a > < / div > < div class = "ttdeci" > void SetNumberOfNodes(int num_nodes)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00036" > connected_components.cc:36< / a > < / div > < / div >
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_ae6201f6f09303eabd7f77e238b4f3a44" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#ae6201f6f09303eabd7f77e238b4f3a44" > DenseConnectedComponentsFinder::GetComponentRoots< / a > < / div > < div class = "ttdeci" > const std::vector< int > & GetComponentRoots()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00073" > connected_components.cc:73< / a > < / div > < / div >
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_aeeb8b88902830cab41c69ef944b5694f" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#aeeb8b88902830cab41c69ef944b5694f" > DenseConnectedComponentsFinder::GetNumberOfNodes< / a > < / div > < div class = "ttdeci" > int GetNumberOfNodes() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8h_source.html#l00096" > connected_components.h:96< / a > < / div > < / div >
< div class = "ttc" id = "aclass_dense_connected_components_finder_html_af783278e17675394e30c3de598b11169" > < div class = "ttname" > < a href = "class_dense_connected_components_finder.html#af783278e17675394e30c3de598b11169" > DenseConnectedComponentsFinder::GetSize< / a > < / div > < div class = "ttdeci" > int GetSize(int node)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "connected__components_8cc_source.html#l00141" > connected_components.cc:141< / a > < / div > < / div >
< div class = "ttc" id = "aconnected__components_8h_html" > < div class = "ttname" > < a href = "connected__components_8h.html" > connected_components.h< / a > < / div > < / div >
2020-11-18 14:53:30 +01:00
< div class = "ttc" id = "anamespacegtl_html_a4afa1e83cd6407fa4b77d49b8c136806" > < div class = "ttname" > < a href = "namespacegtl.html#a4afa1e83cd6407fa4b77d49b8c136806" > gtl::STLEraseAllFromSequenceIf< / a > < / div > < div class = "ttdeci" > void STLEraseAllFromSequenceIf(T *v, P pred)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stl__util_8h_source.html#l00107" > stl_util.h:107< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
< div class = "ttc" id = "astl__util_8h_html" > < div class = "ttname" > < a href = "stl__util_8h.html" > stl_util.h< / a > < / div > < / div >
< / div > <!-- fragment --> < / div > <!-- contents -->
< / div > <!-- doc - content -->
2020-09-01 16:00:33 +02:00
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< img class = "footer" src = "doxygen.png" alt = "doxygen" / > < / a > 1.9.1 < / li >
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