8000 leetcode/src/triangle/triangle.cpp at master · zeroliu/leetcode · GitHub
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Source : https://oj.leetcode.com/problems/triangle/","// Author : Hao Chen","// Date : 2014-06-18","","/********************************************************************************** ","* ","* Given a triangle, find the minimum path sum from top to bottom. ","* Each step you may move to adjacent numbers on the row below.","* ","* For example, given the following triangle","* ","* [","* [2],","* [3,4],","* [6,5,7],","* [4,1,8,3]","* ]","* ","* The minimum path sum from top to bottom is 11 (i.e., 2 + 3 + 5 + 1 = 11).","* ","* Note:","* Bonus point if you are able to do this using only O(n) extra space, where n is the total number of rows in the triangle.","* ","* ","**********************************************************************************/","","#include \u003ciostream\u003e","#include \u003cvector\u003e","using namespace std;","","class Solution {"," ","public:"," int minimumTotal(vector\u003cvector\u003cint\u003e \u003e \u0026triangle) {"," vector\u003c vector\u003cint\u003e \u003e v;"," "," for (int i=0; i\u003ctriangle.size(); i++){"," "," if(i==0){"," v.push_back(triangle[i]);"," continue;"," }"," "," vector\u003cint\u003e tmp;"," "," "," for(int j=0; j\u003ctriangle[i].size(); j++){"," int x, y, z;"," x = y = z = 0x7fff;"," if ( (j-1) \u003e= 0){"," x = v[i-1][j-1];"," }"," if (j\u003cv[i-1].size()) {"," y = v[i-1][j];"," }"," /* won't take the previous adjacent number */"," //if ( (j+1)\u003cv[i-1].size()) {"," // z = v[i-1][j+1];"," //}"," tmp.push_back( min(x,y,z) + triangle[i][j] );"," }"," "," v.push_back(tmp);"," "," }"," int min=0x7fff;"," if (v.size() \u003e 0){"," vector\u003cint\u003e \u0026vb = v[v.size()-1];"," for(int i=0; i\u003cvb.size(); i++){"," if (vb[i] \u003c min ){"," min = vb[i];"," }"," }"," }"," "," return min;"," }","private:"," inline int min(int x, int y, int z){"," int n = x\u003cy?x:y;"," return (n\u003cz?n:z);"," }","};","","","int main()","{"," vector\u003c vector\u003cint\u003e \u003e v;"," vector\u003cint\u003e i;"," i.push_back(-1);"," v.push_back(i);"," "," i.clear();"," i.push_back(2);"," i.push_back(3);"," v.push_back(i);",""," i.clear();"," i.push_back(1);"," i.push_back(-1);"," i.push_back(-3);"," v.push_back(i);",""," Solution s;"," cout \u003c\u003c s.minimumTotal(v) \u003c\u003c endl;;"," "," v.clear();"," i.clear();"," i.push_back(-1);"," v.push_back(i);"," "," i.clear();"," i.push_back(3);"," i.push_back(2);"," v.push_back(i);",""," i.clear();"," i.push_back(-3);"," i.push_back(1);"," i.push_back(-1);"," v.push_back(i);"," cout \u003c\u003c s.minimumTotal(v) \u003c\u003c endl;;",""," return 0;","}"],"stylingDirectives":null,"colorizedLines":null,"csv":null,"csvError":null,"dependabotInfo":{"showConfigurationBanner":false,"configFilePath":null,"networkDependabotPath":"/zeroliu/leetcode/network/updates","dismissConfigurationNoticePath":"/settings/dismiss-notice/dependabot_configuration_notice","configurationNoticeDismissed":null},"displayName":"triangle.cpp","displayUrl":"https://github.com/zeroliu/leetcode/blob/master/src/triangle/triangle.cpp?raw=true","headerInfo":{"blobSize":"2.76 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":"0f6909f","siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fzeroliu%2Fleetcode%2Fblob%2Fmaster%2Fsrc%2Ftriangle%2Ftriangle.cpp","isCSV":false,"isRichtext":false,"toc":null,"lineInfo":{"truncatedLoc":"125","truncatedSloc":"104"},"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":"/zeroliu/leetcode/blob/master/src/triangle/triangle.cpp","showFreeOrgGatedFeatureMessage":null,"showPlanSupportBanner":null,"upgradeDataAttributes":null,"upgradePath":null},"publishBannersInfo":{"dismissActionNoticePath":"/settings/dismiss-notice/publish_action_from_dockerfile","releasePath":"/zeroliu/leetcode/releases/new?marketplace=true","showPublishActionBanner":false},"rawBlobUrl":"https://github.com/zeroliu/leetcode/raw/refs/heads/master/src/triangle/triangle.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":{"/zeroliu/leetcode/branches":{"post":"8BbD4-dTBJJ54SOao8OUk1mjvBfU56Ag2FdfuC3eMp3ZK1-gPjLYwAAIsv2I2AFZcgdpspNmbNn5aHk-Wd6C_Q"},"/repos/preferences":{"post":"ZzNBdp_TNZsp-6Qorj7IufVkg1aFTHsXoJAZAF-FuZOcw-LwvcHJAl-QQlah2MP-uOBHfqt2MfI2GXkaN_1bRg"}}},"title":"leetcode/src/triangle/triangle.cpp at master · zeroliu/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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