8000 leetcode/src/cloneGraph/cloneGraph.cpp at master · jeccey/leetcode · GitHub
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Source : https://oj.leetcode.com/problems/clone-graph/","// Author : Hao Chen","// Date : 2014-10-12","","/********************************************************************************** ","* ","* Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors.","* ","* OJ's undirected graph serialization:","* ","* Nodes are labeled uniquely.","* ","* We use # as a separator for each node, and , as a separator for node label and each neighbor of the node.","* ","* As an example, consider the serialized graph {0,1,2#1,2#2,2}.","* ","* The graph has a total of three nodes, and therefore contains three parts as separated by #.","* ","* First node is labeled as 0. Connect node 0 to both nodes 1 and 2.","* Second node is labeled as 1. Connect node 1 to node 2.","* Third node is labeled as 2. Connect node 2 to node 2 (itself), thus forming a self-cycle.","* ","* Visually, the graph looks like the following:","* ","* 1","* / \\","* / \\","* 0 --- 2","* / \\","* \\_/","* ","* ","**********************************************************************************/","","/**"," * Definition for undirected graph."," * struct UndirectedGraphNode {"," * int label;"," * vector\u003cUndirectedGraphNode *\u003e neighbors;"," * UndirectedGraphNode(int x) : label(x) {};"," * };"," */","class Solution {","public:"," UndirectedGraphNode *cloneGraph(UndirectedGraphNode *node) {"," if (node == NULL) return NULL;"," "," //create a map, key is source node, value is clone node."," map\u003cUndirectedGraphNode*, UndirectedGraphNode*\u003e cloneMap;"," "," //using queue for breath first search"," queue\u003cUndirectedGraphNode*\u003e q;"," q.push(node);"," "," //clone the root"," UndirectedGraphNode* cloneNode = new UndirectedGraphNode(node-\u003elabel);"," cloneMap[node] = cloneNode;"," "," //breath first search"," while(!q.empty()){"," UndirectedGraphNode* n = q.front();"," q.pop();"," //for each neighbors"," for(int i=0; i\u003cn-\u003eneighbors.size(); i++){"," UndirectedGraphNode* neighbor= n-\u003eneighbors[i];"," //not existed in cloneMap"," if (cloneMap.find(neighbor)==cloneMap.end()){"," //clone a node"," UndirectedGraphNode* newNode = new UndirectedGraphNode(neighbor-\u003elabel);"," cloneMap[n]-\u003eneighbors.push_back(newNode);"," cloneMap[neighbor] = newNode;"," "," //put the neighbors into the queue"," q.push(neighbor);"," }else{"," cloneMap[n]-\u003eneighbors.push_back(cloneMap[neighbor]);"," }"," }"," }"," "," return cloneNode;"," }","};"],"stylingDirectives":null,"colorizedLines":null,"csv":null,"csvError":null,"dependabotInfo":{"showConfigurationBanner":false,"configFilePath":null,"networkDependabotPath":"/jeccey/leetcode/network/updates","dismissConfigurationNoticePath":"/settings/dismiss-notice/dependabot_configuration_notice","configurationNoticeDismissed":null},"displayName":"cloneGraph.cpp","displayUrl":"https://github.com/jeccey/leetcode/blob/master/src/cloneGraph/cloneGraph.cpp?raw=true","headerInfo":{"blobSize":"2.69 KB","deleteTooltip":"You must be signed in to make or propose changes","editTooltip":"You must be signed in to make or propose changes","ghDesktopPath":"https://desktop.github.com","isGitLfs":false,"onBranch":true,"shortPath":"da3cad2","siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fjeccey%2Fleetcode%2Fblob%2Fmaster%2Fsrc%2FcloneGraph%2FcloneGraph.cpp","isCSV":false,"isRichtext":false,"toc":null,"lineInfo":{"truncatedLoc":"83","truncatedSloc":"75"},"mode":"file"},"image":false,"isCodeownersFile":null,"isPlain":false,"isValidLegacyIssueTemplate":false,"issueTemplate":null,"discussionTemplate":null,"language":"C++","languageID":43,"large":false,"planSupportInfo":{"repoIsFork":null,"repoOwnedByCurrentUser":null,"requestFullPath":"/jeccey/leetcode/blob/master/src/cloneGraph/cloneGraph.cpp","showFreeOrgGatedFeatureMessage":null,"showPlanSupportBanner":null,"upgradeDataAttributes":null,"upgradePath":null},"publishBannersInfo":{"dismissActionNoticePath":"/settings/dismiss-notice/publish_action_from_dockerfile","releasePath":"/jeccey/leetcode/releases/new?marketplace=true","showPublishActionBanner":false},"rawBlobUrl":"https://github.com/jeccey/leetcode/raw/refs/heads/master/src/cloneGraph/cloneGraph.cpp","renderImageOrRaw":false,"richText":null,"renderedFileInfo":null,"shortPath":null,"symbolsEnabled":true,"tabSize":8,"topBannersInfo":{"overridingGlobalFundingFile":false,"globalPreferredFundingPath":null,"showInvalidCitationWarning":false,"citationHelpUrl":"https://docs.github.com/github/creating-cloning-and-archiving-repositories/creating-a-repository-on-github/about-citation-files","actionsOnboardingTip":null},"truncated":false,"viewable":true,"workflowRedirectUrl":null,"symbols":null},"copilotInfo":null,"copilotAccessAllowed":false,"modelsAccessAllowed":false,"modelsRepoIntegrationEnabled":false,"csrf_tokens":{"/jeccey/leetcode/branches":{"post":"t35jItL1THFvEGH6LKmMsLMSVV-GdO26yA4kWa28DwIVUMbnz3IqqUwFacNw2gg-6VyYSIdEcw3wm3GL5-zEqQ"},"/repos/preferences":{"post":"Wzfu4p0xUP4nkhNvFInrdo54GsXTaZxtHp5VmyG7rxMqCQ46oNeUvyZADmUeJo7YcF2HtzDtoTNHHyptGxSEfA"}}},"title":"leetcode/src/cloneGraph/cloneGraph.cpp at master · jeccey/leetcode","appPayload":{"helpUrl":"https://docs.github.com","findFileWorkerPath":"/assets-cdn/worker/find-file-worker-263cab1760dd.js","findInFileWorkerPath":"/assets-cdn/worker/find-in-file-worker-1b17b3e7786a.js","githubDevUrl":null,"enabled_features":{"code_nav_ui_events":false,"react_blob_overlay":false,"accessible_code_button":true}}}
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