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.gitignore
.gitignore
 
 
1-TwoSum.c
1-TwoSum.c
 
 
102-BinaryTreeLevelOrderTraversal.c
102-BinaryTreeLevelOrderTraversal.c
 
 
107-BinaryTreeLevelOrderTraversalII.c
107-BinaryTreeLevelOrderTraversalII.c
 
 
11-ContainerWithMostWater.cpp
11-ContainerWithMostWater.cpp
 
 
118-PascalsTriangle.c
118-PascalsTriangle.c
 
 
119-PascalsTriangleII.c
119-PascalsTriangleII.c
 
 
120-Triangle.c
120-Triangle.c
 
 
121-BestTimeToBuyAndSellStock.c
121-BestTimeToBuyAndSellStock.c
 
 
125-ValidPalindrome.c
125-ValidPalindrome.c
 
 
129-SumRootToLeafNumbers.c
129-SumRootToLeafNumbers.c
 
 
136-SingleNumber.c
136-SingleNumber.c
 
 
14-LongestCommonPrefix-2.c
14-LongestCommonPrefix-2.c
 
 
14-LongestCommonPrefix.c
14-LongestCommonPrefix.c
 
 
144-BinaryTreePreorderTraversal.c
144-BinaryTreePreorderTraversal.c
 
 
153-FindMinimumInRotatedSortedArray.c
153-FindMinimumInRotatedSortedArray.c
 
 
155-MinStack.c
155-MinStack.c
 
 
167-TwoSumIIInputArrayIsSorted.c
167-TwoSumIIInputArrayIsSorted.c
 
 
168-ExcelSheetColumnTitle.c
168-ExcelSheetColumnTitle.c
 
 
169-MajorityElement.c
169-MajorityElement.c
 
 
171-ExcelSheetColumnNumber.c
171-ExcelSheetColumnNumber.c
 
 
172-FactorialTrailingZeroes.cpp
172-FactorialTrailingZeroes.cpp
 
 
189-RotateArray.c
189-RotateArray.c
 
 
190-ReverseBits.c
190-ReverseBits.c
 
 
191-NumberOf1Bits.c
191-NumberOf1Bits.c
 
 
198-HouseRobber.c
198-HouseRobber.c
 
 
199-BinaryTreeRightSideView.c
199-BinaryTreeRightSideView.c
 
 
20-Valid-Parentheses.c
20-Valid-Parentheses.c
 
 
202-HappyNumber.c
202-HappyNumber.c
 
 
204-CountPrimes.c
204-CountPrimes.c
 
 
205-IsomorphicStrings.c
205-IsomorphicStrings.c
 
 
217-ContainsDuplicate.c
217-ContainsDuplicate.c
 
 
219-ContainsDuplicateII.cpp
219-ContainsDuplicateII.cpp
 
 
22-GenerateParentheses.cpp
22-GenerateParentheses.cpp
 
 
231-PowerOfTwo.c
231-PowerOfTwo.c
 
 
236-LowestCommonAncestorOfABinaryTree.cpp
236-LowestCommonAncestorOfABinaryTree.cpp
 
 
238-ProductOfArrayExceptSelf.c
238-ProductOfArrayExceptSelf.c
 
 
242-ValidAnagram.c
242-ValidAnagram.c
 
 
258-AddDigits.c
258-AddDigits.c
 
 
26-RemoveDuplicatesFromSortedArray.c
26-RemoveDuplicatesFromSortedArray.c
 
 
260-SingleNumberIII.c
260-SingleNumberIII.c
 
 
268-MissingNumber.c
268-MissingNumber.c
 
 
27-RemoveElement.c
27-RemoveElement.c
 
 
278-FirstBadVersion.c
278-FirstBadVersion.c
 
 
28-ImplementStrStr.c
28-ImplementStrStr.c
 
 
283-MoveZeroes.c
283-MoveZeroes.c
 
 
292-NimGame.c
292-NimGame.c
 
 
299-BullsAndCows.c
299-BullsAndCows.c
 
 
3-LongestSubstringWithoutRepeatingCharacters.cpp
3-LongestSubstringWithoutRepeatingCharacters.cpp
 
 
303-RangeSumQueryImmutable.c
303-RangeSumQueryImmutable.c
 
 
319-BulbSwitcher.c
319-BulbSwitcher.c
 
 
326-PowerOfThree.c
326-PowerOfThree.c
 
 
338-CountingBits.c
338-CountingBits.c
 
 
342-PowerOfFour.c
342-PowerOfFour.c
 
 
343-IntegerBreak.c
343-IntegerBreak.c
 
 
344-ReverseString.c
344-ReverseString.c
 
 
345-ReverseVowelsOfAString.c
345-ReverseVowelsOfAString.c
 
 
347-TopKFrequentElements.c
347-TopKFrequentElements.c
 
 
349-IntersectionOfTwoArrays.c
349-IntersectionOfTwoArrays.c
 
 
35-SearchInsertPosition.c
35-SearchInsertPosition.c
 
 
350-IntersectionOfTwoArraysII.c
350-IntersectionOfTwoArraysII.c
 
 
36-ValidSudoku.c
36-ValidSudoku.c
 
 
367-ValidPerfectSquare.c
367-ValidPerfectSquare.c
 
 
371-SumOfTwoIntegers.c
371-SumOfTwoIntegers.c
 
 
378-KthSmallestElementInASortedMatrix.c
378-KthSmallestElementInASortedMatrix.c
 
 
382-LinkedListRandomNode.c
382-LinkedListRandomNode.c
 
 
383-RansomNote.c
383-RansomNote.c
 
 
384-ShuffleAnArray.c
384-ShuffleAnArray.c
 
 
387-FirstUniqueCharacterInAString.c
387-FirstUniqueCharacterInAString.c
 
 
389-FindTheDifference.c
389-FindTheDifference.c
 
 
392-IsSubsequence-MLE.c
392-IsSubsequence-MLE.c
 
 
392-IsSubsequence.c
392-IsSubsequence.c
 
 
398-RandomPickIndex.c
398-RandomPickIndex.c
 
 
405-ConvertANumberToHexadecimal.c
405-ConvertANumberToHexadecimal.c
 
 
409-LongestPalindrome.c
409-LongestPalindrome.c
 
 
412-FizzBuzz.c
412-FizzBuzz.c
 
 
413-ArithmeticSlices.c
413-ArithmeticSlices.c
 
 
414-ThirdMaximumNumber.c
414-ThirdMaximumNumber.c
 
 
415-AddStrings.c
415-AddStrings.c
 
 
421-MaximumXOROfTwoNumbersInAnArray.c
421-MaximumXOROfTwoNumbersInAnArray.c
 
 
423-ReconstructOriginDigitsFromEnglish.c
423-ReconstructOriginDigitsFromEnglish.c
 
 
434-NumberOfSegmentsInAString.c
434-NumberOfSegmentsInAString.c
 
 
437-PathSumIII.c
437-PathSumIII.c
 
 
441-ArrangingCoins.c
441-ArrangingCoins.c
 
 
442-FindAllDuplicatesInAnArray.c
442-FindAllDuplicatesInAnArray.c
 
 
442-FindAllDuplicatesInAnArrayII.c
442-FindAllDuplicatesInAnArrayII.c
 
 
445-AddTwoNumbersII.c
445-AddTwoNumbersII.c
 
 
448-FindAllNumbersDisappearedInAnArray.c
448-FindAllNumbersDisappearedInAnArray.c
 
 
451-SortCharactersByFrequency.c
451-SortCharactersByFrequency.c
 
 
453-MinimumMovesToEqualArrayElements.c
453-MinimumMovesToEqualArrayElements.c
 
 
455-AssignCookies.c
455-AssignCookies.c
 
 
459-RepeatedSubstringPattern.c
459-RepeatedSubstringPattern.c
 
 
461-HammingDistance.c
461-HammingDistance.c
 
 
463-IslandPerimeter.c
463-IslandPerimeter.c
 
 
476-NumberComplement.c
476-NumberComplement.c
 
 
48-RotateImage.c
48-RotateImage.c
 
 
485-MaxConsecutiveOnes.c
485-MaxConsecutiveOnes.c
 
 
495-TeemoAttacking.c
495-TeemoAttacking.c
 
 
500-KeyboardRow.c
500-KeyboardRow.c
 
 
504-Base7.c
504-Base7.c
 
 

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Introduction

My solutions to problems on Leetcode.

History

  • 2017.1.21 Finished most of the problems with difficulty 'Easy' in algorithm.

The initial purpose of working on these problems was to strengthen my comprehension on Data Structure, but later I found that algorithms are interesting as well, so I spent some extra time on easiest algorithms.

I tend to rest for a while to learn something more before I can continue with more complex problems on DS and ALG :)

  • 2017.2.7 Finished nearly 2 problems per day during the winter vacation, most problems with difficulty 'Medium'.

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My solutions to problems about algorithms on LeetCode

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algorithm leetcode

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