You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
{"payload":{"allShortcutsEnabled":false,"fileTree":{"src/decodeWays":{"items":[{"name":"decodeWays.cpp","path":"src/decodeWays/decodeWays.cpp","contentType":"file"}],"totalCount":1},"src":{"items":[{"name":"3Sum","path":"src/3Sum","contentType":"directory"},{"name":"3SumClosest","path":"src/3SumClosest","contentType":"directory"},{"name":"4Sum","path":"src/4Sum","contentType":"directory"},{"name":"LRUCache","path":"src/LRUCache","contentType":"directory"},{"name":"addBinary","path":"src/addBinary","contentType":"directory"},{"name":"addTwoNumbers","path":"src/addTwoNumbers","contentType":"directory"},{"name":"anagrams","path":"src/anagrams","contentType":"directory"},{"name":"balancedBinaryTree","path":"src/balancedBinaryTree","contentType":"directory"},{"name":"bestTimeToBuyAndSellStock","path":"src/bestTimeToBuyAndSellStock","contentType":"directory"},{"name":"binaryTreeInorderTraversal","path":"src/binaryTreeInorderTraversal","contentType":"directory"},{"name":"binaryTreeLevelOrderTraversal","path":"src/binaryTreeLevelOrderTraversal","contentType":"directory"},{"name":"binaryTreeMaximumPathSum","path":"src/binaryTreeMaximumPathSum","contentType":"directory"},{"name":"binaryTreePostorderTraversal","path":"src/binaryTreePostorderTraversal","contentType":"directory"},{"name":"binaryTreePreorderTraversal","path":"src/binaryTreePreorderTraversal","contentType":"directory"},{"name":"binaryTreeZigzagLevelOrderTraversal","path":"src/binaryTreeZigzagLevelOrderTraversal","contentType":"directory"},{"name":"candy","path":"src/candy","contentType":"directory"},{"name":"climbStairs","path":"src/climbStairs","contentType":"directory"},{"name":"cloneGraph","path":"src/cloneGraph","contentType":"directory"},{"name":"combinationSum","path":"src/combinationSum","contentType":"directory"},{"name":"combinations","path":"src/combinations","contentType":"directory"},{"name":"constructBinaryTreeFromInorderAndPostorderTraversal","path":"src/constructBinaryTreeFromInorderAndPostorderTraversal","contentType":"directory"},{"name":"constructBinaryTreeFromPreorderAndInorderTraversal","path":"src/constructBinaryTreeFromPreorderAndInorderTraversal","contentType":"directory"},{"name":"containerWithMostWater","path":"src/containerWithMostWater","contentType":"directory"},{"name":"convertSortedArrayToBinarySearchTree","path":"src/convertSortedArrayToBinarySearchTree","contentType":"directory"},{"name":"convertSortedListToBinarySearchTree","path":"src/convertSortedListToBinarySearchTree","contentType":"directory"},{"name":"copyListWithRandomPointer","path":"src/copyListWithRandomPointer","contentType":"directory"},{"name":"countAndSay","path":"src/countAndSay","contentType":"directory"},{"name":"decodeWays","path":"src/decodeWays","contentType":"directory"},{"name":"distinctSubsequences","path":"src/distinctSubsequences","contentType":"directory"},{"name":"divideTwoInt","path":"src/divideTwoInt","contentType":"directory"},{"name":"editDistance","path":"src/editDistance","contentType":"directory"},{"name":"evaluateReversePolishNotation","path":"src/evaluateReversePolishNotation","contentType":"directory"},{"name":"findMinimumInRotatedSortedArray","path":"src/findMinimumInRotatedSortedArray","contentType":"directory"},{"name":"firstMissingPositive","path":"src/firstMissingPositive","contentType":"directory"},{"name":"flattenBinaryTreeToLinkedList","path":"src/flattenBinaryTreeToLinkedList","contentType":"directory"},{"name":"gasStation","path":"src/gasStation","contentType":"directory"},{"name":"generateParentheses","path":"src/generateParentheses","contentType":"directory"},{"name":"grayCode","path":"src/grayCode","contentType":"directory"},{"name":"insertInterval","path":"src/insertInterval","contentType":"directory"},{"name":"insertionSortList","path":"src/insertionSortList","contentType":"directory"},{"name":"integerToRoman","path":"src/integerToRoman","contentType":"directory"},{"name":"interleavingString","path":"src/interleavingString","contentType":"directory"},{"name":"jumpGame","path":"src/jumpGame","contentType":"directory"},{"name":"largestRectangleInHistogram","path":"src/largestRectangleInHistogram","contentType":"directory"},{"name":"lengthOfLastWord","path":"src/lengthOfLastWord","contentType":"directory"},{"name":"letterCombinationsOfAPhoneNumber","path":"src/letterCombinationsOfAPhoneNumber","contentType":"directory"},{"name":"linkedListCycle","path":"src/linkedListCycle","contentType":"directory"},{"name":"longestCommonPrefix","path":"src/longestCommonPrefix","contentType":"directory"},{"name":"longestConsecutiveSequence","path":"src/longestConsecutiveSequence","contentType":"directory"},{"name":"longestPalindromicSubstring","path":"src/longestPalindromicSubstring","contentType":"directory"},{"name":"longestSubstringWithoutRepeatingCharacters","path":"src/longestSubstringWithoutRepeatingCharacters","contentType":"directory"},{"name":"longestValidParentheses","path":"src/longestValidParentheses","contentType":"directory"},{"name":"maxPointsOnALine","path":"src/maxPointsOnALine","contentType":"directory"},{"name":"maximalRectangle","path":"src/maximalRectangle","contentType":"directory"},{"name":"maximumDepthOfBinaryTree","path":"src/maximumDepthOfBinaryTree","contentType":"directory"},{"name":"maximumProductSubarray","path":"src/maximumProductSubarray","contentType":"directory"},{"name":"maximumSubArray","path":"src/maximumSubArray","contentType":"directory"},{"name":"medianOfTwoSortedArrays","path":"src/medianOfTwoSortedArrays","contentType":"directory"},{"name":"mergeIntervals","path":"src/mergeIntervals","contentType":"directory"},{"name":"mergeKSortedLists","path":"src/mergeKSortedLists","contentType":"directory"},{"name":"mergeTwoSortedArray","path":"src/mergeTwoSortedArray","contentType":"directory"},{"name":"mergeTwoSortedList","path":"src/mergeTwoSortedList","contentType":"directory"},{"name":"minimumDepthOfBinaryTree","path":"src/minimumDepthOfBinaryTree","contentType":"directory"},{"name":"minimumPathSum","path":"src/minimumPathSum","contentType":"directory"},{"name":"minimumWindowSubstring","path":"src/minimumWindowSubstring","contentType":"directory"},{"name":"multiplyStrings","path":"src/multiplyStrings","contentType":"directory"},{"name":"nQueens","path":"src/nQueens","contentType":"directory"},{"name":"nextPermutation","path":"src/nextPermutation","contentType":"directory"},{"name":"palindromeNumber","path":"src/palindromeNumber","contentType":"directory"},{"name":"palindromePartitioning","path":"src/palindromePartitioning","contentType":"directory"},{"name":"partitionList","path":"src/partitionList","contentType":"directory"},{"name":"pascalTriangle","path":"src/pascalTriangle","contentType":"directory"},{"name":"pathSum","path":"src/pathSum","contentType":"directory"},{"name":"permutationSequence","path":"src/permutationSequence","contentType":"directory"},{"name":"permutations","path":"src/permutations","contentType":"directory"},{"name":"plusOne","path":"src/plusOne","contentType":"directory"},{"name":"populatingNextRightPointersInEachNode","path":"src/populatingNextRightPointersInEachNode","contentType":"directory"},{"name":"pow","path":"src/pow","contentType":"directory"},{"name":"recoverBinarySearchTree","path":"src/recoverBinarySearchTree","contentType":"directory"},{"name":"regularExpressionMatching","path":"src/regularExpressionMatching","contentType":"directory"},{"name":"removeDuplicatesFromSortedArray","path":"src/removeDuplicatesFromSortedArray","contentType":"directory"},{"name":"removeDuplicatesFromSortedList","path":"src/removeDuplicatesFromSortedList","contentType":"directory"},{"name":"removeElement","path":"src/removeElement","contentType":"directory"},{"name":"removeNthNodeFromEndOfList","path":"src/removeNthNodeFromEndOfList","contentType":"directory"},{"name":"reorderList","path":"src/reorderList","contentType":"directory"},{"name":"restoreIPAddresses","path":"src/restoreIPAddresses","contentType":"directory"},{"name":"reverseInteger","path":"src/reverseInteger","contentType":"directory"},{"name":"reverseLinkedList","path":"src/reverseLinkedList","contentType":"directory"},{"name":"reverseNodesInKGroup","path":"src/reverseNodesInKGroup","contentType":"directory"},{"name":"reverseWordsInAString","path":"src/reverseWordsInAString","contentType":"directory"},{"name":"romanToInteger","path":"src/romanToInteger","contentType":"directory"},{"name":"rotateImage","path":"src/rotateImage","contentType":"directory"},{"name":"rotateList","path":"src/rotateList","contentType":"directory"},{"name":"sameTree","path":"src/sameTree","contentType":"directory"},{"name":"scrambleString","path":"src/scrambleString","contentType":"directory"},{"name":"search2DMatrix","path":"src/search2DMatrix","contentType":"directory"},{"name":"searchForRange","path":"src/searchForRange","contentType":"directory"},{"name":"searchInRotatedSortedArray","path":"src/searchInRotatedSortedArray","contentType":"directory"},{"name":"searchInsertPosition","path":"src/searchInsertPosition","contentType":"directory"},{"name":"setMatrixZeroes","path":"src/setMatrixZeroes","contentType":"directory"},{"name":"simplifyPath","path":"src/simplifyPath","contentType":"directory"},{"name":"singleNumber","path":"src/singleNumber","contentType":"directory"},{"name":"sortColors","path":"src/sortColors","contentType":"directory"},{"name":"sortList","path":"src/sortList","contentType":"directory"},{"name":"spiralMatrix","path":"src/spiralMatrix","contentType":"directory"},{"name":"sqrt","path":"src/sqrt","contentType":"directory"},{"name":"strStr","path":"src/strStr","contentType":"directory"},{"name":"stringToIntegerAtoi","path":"src/stringToIntegerAtoi","contentType":"directory"},{"name":"subsets","path":"src/subsets","contentType":"directory"},{"name":"substringWithConcatenationOfAllWords","path":"src/substringWithConcatenationOfAllWords","contentType":"directory"},{"name":"sudokuSolver","path":"src/sudokuSolver","contentType":"directory"},{"name":"sumRootToLeafNumber","path":"src/sumRootToLeafNumber","contentType":"directory"},{"name":"surroundedRegions","path":"src/surroundedRegions","contentType":"directory"},{"name":"swapNodesInPairs","path":"src/swapNodesInPairs","contentType":"directory"},{"name":"symmetricTree","path":"src/symmetricTree","contentType":"directory"},{"name":"textJustification","path":"src/textJustification","contentType":"directory"},{"name":"trappingRainWater","path":"src/trappingRainWater","contentType":"directory"},{"name":"triangle","path":"src/triangle","contentType":"directory"},{"name":"twoSum","path":"src/twoSum","contentType":"directory"},{"name":"uniqueBinarySearchTrees","path":"src/uniqueBinarySearchTrees","contentType":"directory"},{"name":"uniquePaths","path":"src/uniquePaths","contentType":"directory"},{"name":"validNumber","path":"src/validNumber","contentType":"directory"},{"name":"validPalindrome","path":"src/validPalindrome","contentType":"directory"},{"name":"validParentheses","path":"src/validParentheses","contentType":"directory"},{"name":"validSudoku","path":"src/validSudoku","contentType":"directory"},{"name":"validateBinarySearchTree","path":"src/validateBinarySearchTree","contentType":"directory"},{"name":"wildcardMatching","path":"src/wildcardMatching","contentType":"directory"},{"name":"wordBreak","path":"src/wordBreak","contentType":"directory"},{"name":"wordLadder","path":"src/wordLadder","contentType":"directory"},{"name":"wordSearch","path":"src/wordSearch","contentType":"directory"},{"name":"zigZagConversion","path":"src/zigZagConversion","contentType":"directory"}],"totalCount":131},"":{"items":[{"name":"src","path":"src","contentType":"directory"},{"name":"README.md","path":"README.md","contentType":"file"}],"totalCount":2}},"fileTreeProcessingTime":18.267575,"foldersToFetch":[],"incompleteFileTree":false,"repo":{"id":25625154,"defaultBranch":"master","name":"leetcode","ownerLogin":"guling","currentUserCanPush":false,"isFork":true,"isEmpty":false,"createdAt":"2014-10-23T07:35:31.000Z","ownerAvatar":"https://avatars.githubusercontent.com/u/4394882?v=4","public":true,"private":false,"isOrgOwned":false},"codeLineWrapEnabled":false,"symbolsExpanded":false,"treeExpanded":true,"refInfo":{"name":"master","listCacheKey":"v0:1618412321.455188","canEdit":false,"refType":"branch","currentOid":"fd90314056da3f8ed3b5fdc33a6239eab89a3941"},"path":"src/decodeWays/decodeWays.cpp","currentUser":null,"blob":{"rawLines":["// Source : https://oj.leetcode.com/problems/decode-ways/","// Author : Hao Chen","// Date : 2014-07-16","","/********************************************************************************** ","* ","* A message containing letters from A-Z is being encoded to numbers using the following mapping:","* ","* 'A' -\u003e 1","* 'B' -\u003e 2","* ...","* 'Z' -\u003e 26","* ","* Given an encoded message containing digits, determine the total number of ways to decode it.","* ","* For example,","* Given encoded message \"12\",","* it could be decoded as \"AB\" (1 2) or \"L\" (12).","* ","* The number of ways decoding \"12\" is 2.","* ","* ","**********************************************************************************/","","#include \u003ciostream\u003e","#include \u003cstring\u003e","#include \u003cstring.h\u003e","using namespace std;","","","//Count[i] = Count[i-1] if S[i-1] is a valid char (not '0')","// = Count[i-1]+ Count[i-2] if S[i-1] and S[i-2] together is still a valid char (10 to 26).","","int check(char ch){"," //check 0 or not"," return (!isdigit(ch) || ch=='0') ? 0 : 1;","}","","int check(char ch1, char ch2){"," //check it's between 10 and 26"," return (ch1=='1' || (ch1=='2' \u0026\u0026 ch2\u003c='6')) ? 1: 0;","}","","int numDecodings(string s) {"," if (s.size()\u003c=0) return 0;"," if (s.size()==1) return check(s[0]);"," "," int* dp = new int[s.size()];"," memset(dp, 0, s.size()*sizeof(int));",""," dp[0] = check(s[0]);"," dp[1] = check(s[0]) * check(s[1]) + check(s[0], s[1]) ;"," for (int i=2; i\u003cs.size(); i++) {"," if (!isdigit(s[i])) break; "," if (check(s[i])) {"," dp[i] = dp[i-1];"," }"," if (check(s[i-1], s[i])) {"," dp[i] += dp[i-2];"," }"," "," }"," int result = dp[s.size()-1];"," delete[] dp;"," return result;","}","","","int main(int argc, char**argv)","{"," string s = \"123\";"," if (argc\u003e1){"," s = argv[1];"," }"," cout \u003c\u003c \"\\\"\" \u003c\u003c s \u003c\u003c \"\\\" : \" \u003c\u003c numDecodings(s) \u003c\u003c endl; "," return 0;","}"],"stylingDirectives":[[[0,57,"pl-c"],[0,2,"pl-c"]],[[0,20,"pl-c"],[0,2,"pl-c"]],[[0,22,"pl-c"],[0,2,"pl-c"]],[],[[0,84,"pl-c"],[0,2,"pl-c"]],[[0,2,"pl-c"]],[[0,96,"pl-c"]],[[0,2,"pl-c"]],[[0,10,"pl-c"]],[[0,10,"pl-c"]],[[0,5,"pl-c"]],[[0,11,"pl-c"]],[[0,2,"pl-c"]],[[0,94,"pl-c"]],[[0,2,"pl-c"]],[[0,14,"pl-c"]],[[0,29,"pl-c"]],[[0,48,"pl-c"]],[[0,2,"pl-c"]],[[0,40,"pl-c"]],[[0,2,"pl-c"]],[[0,16,"pl-c"]],[[0,83,"pl-c"],[81,83,"pl-c"]],[],[[1,8,"pl-k"],[9,19,"pl-s"],[9,10,"pl-pds"],[18,19,"pl-pds"]],[[1,8,"pl-k"],[9,17,"pl-s"],[9,10,"pl-pds"],[16,17,"pl-pds"]],[[1,8,"pl-k"],[9,19,"pl-s"],[9,10,"pl-pds"],[18,19,"pl-pds"]],[[0,5,"pl-k"],[6,15,"pl-k"],[16,19,"pl-en"],[19,20,"pl-k"]],[],[],[[0,72,"pl-c"],[0,2,"pl-c"]],[[0,100,"pl-c"],[0,2,"pl-c"]],[],[[0,3,"pl-k"],[4,9,"pl-en"],[10,14,"pl-k"]],[[4,20,"pl-c"],[4,6,"pl-c"]],[[4,10,"pl-k"],[13,20,"pl-c1"],[32,35,"pl-s"],[32,33,"pl-pds"],[34,35,"pl-pds"],[39,40,"pl-c1"],[43,44,"pl-c1"]],[],[],[[0,3,"pl-k"],[4,9,"pl-en"],[10,14,"pl-k"],[20,24,"pl-k"]],[[4,34,"pl-c"],[4,6,"pl-c"]],[[4,10,"pl-k"],[17,20,"pl-s"],[17,18,"pl-pds"],[19,20,"pl-pds"],[30,33,"pl-s"],[30,31,"pl-pds"],[32,33,"pl-pds"],[42,45,"pl-s"],[42,43,"pl-pds"],[44,45,"pl-pds"],[50,51,"pl-c1"],[53,54,"pl-c1"]],[],[],[[0,3,"pl-k"],[4,16,"pl-en"]],[[4,6,"pl-k"],[10,14,"pl-c1"],[18,19,"pl-c1"],[21,27,"pl-k"],[28,29,"pl-c1"]],[[4,6,"pl-k"],[10,14,"pl-c1"],[18,19,"pl-c1"],[21,27,"pl-k"],[28,33,"pl-c1"],[36,37,"pl-c1"]],[],[[4,7,"pl-k"],[14,17,"pl-k"],[18,21,"pl-k"],[24,28,"pl-c1"]],[[4,10,"pl-c1"],[15,16,"pl-c1"],[20,24,"pl-c1"],[27,33,"pl-k"],[34,37,"pl-k"]],[],[[7,8,"pl-c1"],[12,17,"pl-c1"],[20,21,"pl-c1"]],[[7,8,"pl-c1"],[12,17,"pl-c1"],[20,21,"pl-c1"],[27,32,"pl-c1"],[35,36,"pl-c1"],[41,46,"pl-c1"],[49,50,"pl-c1"],[55,56,"pl-c1"]],[[4,7,"pl-k"],[9,12,"pl-k"],[15,16,"pl-c1"],[22,26,"pl-c1"]],[[8,10,"pl-k"],[13,20,"pl-c1"],[28,33,"pl-k"]],[[8,10,"pl-k"],[12,17,"pl-c1"]],[[25,26,"pl-c1"]],[],[[8,10,"pl-k"],[12,17,"pl-c1"],[22,23,"pl-c1"]],[[26,27,"pl-c1"]],[],[],[],[[4,7,"pl-k"],[22,26,"pl-c1"],[29,30,"pl-c1"]],[[4,12,"pl-k"]],[[4,10,"pl-k"]],[],[],[],[[0,3,"pl-k"],[4,8,"pl-en"],[9,12,"pl-k"],[19,23,"pl-k"]],[],[[15,20,"pl-s"],[15,16,"pl-pds"],[19,20,"pl-pds"]],[[4,6,"pl-k"],[13,14,"pl-c1"]],[[17,18,"pl-c1"]],[],[[12,16,"pl-s"],[12,13,"pl-pds"],[13,15,"pl-cce"],[15,16,"pl-pds"],[25,32,"pl-s"],[25,26,"pl-pds"],[26,28,"pl-cce"],[31,32,"pl-pds"],[36,48,"pl-c1"]],[[4,10,"pl-k"],[11,12,"pl-c1"]],[]],"colorizedLines":null,"csv":null,"csvError":null,"dependabotInfo":{"showConfigurationBanner":false,"configFilePath":null,"networkDependabotPath":"/guling/leetcode/network/updates","dismissConfigurationNoticePath":"/settings/dismiss-notice/dependabot_configuration_notice","configurationNoticeDismissed":null},"displayName":"decodeWays.cpp","displayUrl":"https://github.com/guling/leetcode/blob/master/src/decodeWays/decodeWays.cpp?raw=true","headerInfo":{"blobSize":"1.84 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":"e600878","siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fguling%2Fleetcode%2Fblob%2Fmaster%2Fsrc%2FdecodeWays%2FdecodeWays.cpp","isCSV":false,"isRichtext":false,"toc":null,"lineInfo":{"truncatedLoc":"77","truncatedSloc":"65"},"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":"/guling/leetcode/blob/master/src/decodeWays/decodeWays.cpp","showFreeOrgGatedFeatureMessage":null,"showPlanSupportBanner":null,"upgradeDataAttributes":null,"upgradePath":null},"publishBannersInfo":{"dismissActionNoticePath":"/settings/dismiss-notice/publish_action_from_dockerfile","releasePath":"/guling/leetcode/releases/new?marketplace=true","showPublishActionBanner":false},"rawBlobUrl":"https://github.com/guling/leetcode/raw/refs/heads/master/src/decodeWays/decodeWays.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":{"/guling/leetcode/branches":{"post":"CPZPb2w5kb4udRR2_s9HdYPWr9-htw_34g5O4UU1PQfcLwJ4jN8dhJQ6GFjLopLG-dbE6QioBZQyDKY2SYNPHg"},"/repos/preferences":{"post":"Hq8Ut4qyntZ0XdYgXlUyDuaMivy_HnlByZCYfFDkue_htfO3bR5UZxFPA1nOnY9dFuyA_VLGl8xJ6L59Q8tLdg"}}},"title":"leetcode/src/decodeWays/decodeWays.cpp at master · guling/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}}}