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recherst

Optimize this algorithm.

Sep 3, 2022

2865706 · Sep 3, 2022

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Name		Name	Last commit message	Last commit date
parent directory ..
1.Two Sum.playground		1.Two Sum.playground	Put all of them into "easy" folder.	Jun 19, 2022
100.Same Tree.playground		100.Same Tree.playground	Put all of them into "easy" folder.	Jun 19, 2022
101.Symmetric Tree.playground		101.Symmetric Tree.playground	Put all of them into "easy" folder.	Jun 19, 2022
104.Maximum Depth of Binary Tree.playground		104.Maximum Depth of Binary Tree.playground	Put all of them into "easy" folder.	Jun 19, 2022
108.Convert Sorted Array to Binary Search Tree.playground		108.Convert Sorted Array to Binary Search Tree.playground	Move to No.108 easy folder.	Jun 19, 2022
110.Balanced Binary Tree.playground		110.Balanced Binary Tree.playground	Put all of them into "easy" folder.	Jun 19, 2022
111.Minimum Depth of Binary Tree.playground		111.Minimum Depth of Binary Tree.playground	add an optimized method for question No.111.	Jun 19, 2022
112.Path Sum.playground		112.Path Sum.playground	Add a new solution for question No.112 "Path Sum".	Jun 19, 2022
118.Pascal's Triangle.playground		118.Pascal's Triangle.playground	Resolve a new question.	Jun 20, 2022
119.Pascal's Triangle II.playground		119.Pascal's Triangle II.playground	Resolve a new question.	Jun 20, 2022
121.Best Time to Buy and Sell Stock.playground		121.Best Time to Buy and Sell Stock.playground	Optimize algorithm for question No.121.	Jun 20, 2022
125.Valid Palindrome.playground		125.Valid Palindrome.playground	Add a new item.	Jun 20, 2022
13.Roman to Integer.playground		13.Roman to Integer.playground	Put all of them into "easy" folder.	Jun 19, 2022
136.Single Number.playground		136.Single Number.playground	Resolve a new question.	Jun 20, 2022
14.Longest Common Prefix.playground		14.Longest Common Prefix.playground	Put all of them into "easy" folder.	Jun 19, 2022
141.Linked List Cycle.playground		141.Linked List Cycle.playground	New question!!	Jul 2, 2022
144.Binary Tree Preorder Traversal.playground		144.Binary Tree Preorder Traversal.playground	Add iteration version.	Jun 21, 2022
145.Binary Tree Postorder Traversal.playground		145.Binary Tree Postorder Traversal.playground	New question!!	Jul 2, 2022
160.Intersection of Two Linked Lists.playground		160.Intersection of Two Linked Lists.playground	New solution for question No.160.	Jun 22, 2022
168.Excel Sheet Column Title.playground		168.Excel Sheet Column Title.playground	New Solution!!!	Jun 23, 2022
169.Majority Element.playground		169.Majority Element.playground	Optimize algorithm.	Jun 23, 2022
171.Excel Sheet Column Number.playground		171.Excel Sheet Column Number.playground	Use guard to rewrite.	Jun 23, 2022
190.Reverse Bits.playground		190.Reverse Bits.playground	F*ck the bit operation!	Jun 23, 2022
191.Number of 1 Bits.playground		191.Number of 1 Bits.playground	Resolve a new question!	Jun 24, 2022
20.Valid Parentheses.playground		20.Valid Parentheses.playground	Put all of them into "easy" folder.	Jun 19, 2022
202.Happy Number.playground		202.Happy Number.playground	New question!	Jun 24, 2022
203.Remove Linked List Elements.playground		203.Remove Linked List Elements.playground	A new question resolved (but not understand).	Jun 24, 2022
205.Isomorphic Strings.playground		205.Isomorphic Strings.playground	New question.	Jun 25, 2022
206.Reverse Linked List.playground		206.Reverse Linked List.playground	New question of linked list.	Jun 28, 2022
21.Merge Two Sorted Lists.playground		21.Merge Two Sorted Lists.playground	Put all of them into "easy" folder.	Jun 19, 2022
217.Contains Duplicate.playground		217.Contains Duplicate.playground	Resolve a new question.	Jun 28, 2022
219.Contains Duplicate II.playground		219.Contains Duplicate II.playground	Resolve a new question.	Jun 28, 2022
225.Implement Stack using Queues.playground		225.Implement Stack using Queues.playground	New question!!	Jul 2, 2022
226.Invert Binary Tree.playground		226.Invert Binary Tree.playground	Invert binary tree.	Jul 4, 2022
228.Summary Ranges.playground		228.Summary Ranges.playground	Optimized.	Jul 4, 2022
231.Power of Two.playground		231.Power of Two.playground	Power of Two.	Jul 4, 2022
232.Implement Queue using Stacks.playground		232.Implement Queue using Stacks.playground	Implement Queue using Stacks.	Jul 4, 2022
234.Palindrome Linked List.playground		234.Palindrome Linked List.playground	Palindrome linked list.	Jul 4, 2022
235.Lowest Common Ancestor of a Binary Search Tree.playground		235.Lowest Common Ancestor of a Binary Search Tree.playground	Lowest Common ancestor of a binary search tree.	Jul 5, 2022
237.Delete Node in a Linked List.playground		237.Delete Node in a Linked List.playground	Delete node in a linked list.	Jul 5, 2022
242.Valid Anagram.playground		242.Valid Anagram.playground	Valid anagram.	Jul 5, 2022
257.Binary Tree Paths.playground		257.Binary Tree Paths.playground	Binary tree paths.	Jul 6, 2022
258.Add Digits.playground		258.Add Digits.playground	Second method for Adding digits.	Jul 6, 2022
26.Remove Duplicates from Sorted Array.playground		26.Remove Duplicates from Sorted Array.playground	Put all of them into "easy" folder.	Jun 19, 2022
263.Ugly Number.playground		263.Ugly Number.playground	Ugly number.	Jul 6, 2022
268.Missing Number.playground		268.Missing Number.playground	Missing number.	Jul 6, 2022
27.Remove Element.playground		27.Remove Element.playground	Put all of them into "easy" folder.	Jun 19, 2022
278.First Bad Version.playground		278.First Bad Version.playground	Move zeroes.	Jul 6, 2022
28.Implement strStr.playground		28.Implement strStr.playground	Put all of them into "easy" folder.	Jun 19, 2022
283.Move Zeroes.playground		283.Move Zeroes.playground	Move zeroes.	Jul 6, 2022
290.Word Pattern.playground		290.Word Pattern.playground	Word pattern.	Jul 6, 2022
292.Nim Game.playground		292.Nim Game.playground	Nim game.	Jul 6, 2022
303.Range Sum Query - Immutable.playground		303.Range Sum Query - Immutable.playground	Range sum query - immutable.	Jul 6, 2022
326.Power of Three.playground		326.Power of Three.playground	Better solution for "Power of Four".	Jul 8, 2022
338.Counting Bits.playground		338.Counting Bits.playground	Power of four.	Jul 8, 2022
342.Power of Four.playground		342.Power of Four.playground	Better solution for "Power of Four".	Jul 8, 2022
344.Reverse String.playground		344.Reverse String.playground	Reverse vowels of a string.	Jul 8, 2022
345.Reverse Vowels of a String.playground		345.Reverse Vowels of a String.playground	Reverse vowels of a string.	Jul 8, 2022
349.Intersection of Two Arrays.playground		349.Intersection of Two Arrays.playground	Intersection of two arrays.	Jul 8, 2022
35.Search Insert Position.playground		35.Search Insert Position.playground	Put all of them into "easy" folder.	Jun 19, 2022
350.Intersection of Two Arrays II.playground		350.Intersection of Two Arrays II.playground	Valid perfect square.	Jul 8, 2022
367.Valid Perfect Square.playground		367.Valid Perfect Square.playground	Valid perfect square.	Jul 8, 2022
374.Guess Number Higher or Lower.playground		374.Guess Number Higher or Lower.playground	Guess number higher or lower.	Jul 8, 2022
383.Ransom Note.playground		383.Ransom Note.playground	Ransom note.	Jul 8, 2022
387.First Unique Character in a String.playground		387.First Unique Character in a String.playground	First unique character in a string.	Jul 8, 2022
389.Find the Difference.playground		389.Find the Difference.playground	Find the difference.	Jul 8, 2022
39.Combination Sum.playground		39.Combination Sum.playground	Array partition.	Aug 25, 2022
392.Is Subsequence.playground		392.Is Subsequence.playground	Is subsequence.	Jul 9, 2022
401.Binary Watch.playground		401.Binary Watch.playground	Binary watch.	Jul 10, 2022
404.Sum of Left Leaves.playground		404.Sum of Left Leaves.playground	Sum of left leaves.	Jul 11, 2022
405.Convert a Number to Hexadecimal.playground		405.Convert a Number to Hexadecimal.playground	Longest palindrome.	Jul 11, 2022
409.Longest Palindrome.playground		409.Longest Palindrome.playground	Fizz buzz.	Jul 11, 2022
412.Fizz Buzz.playground		412.Fizz Buzz.playground	Fizz buzz.	Jul 11, 2022
414.Third Maximum Number.playground		414.Third Maximum Number.playground	Third maximum number.	Jul 11, 2022
415.Add Strings.playground		415.Add Strings.playground	Add string.	Jul 11, 2022
434.Number of Segments in a String.playground		434.Number of Segments in a String.playground	Number of segments in a string.	Jul 12, 2022
441.Arranging Coins.playground		441.Arranging Coins.playground	Arranging coins.	Jul 13, 2022
448.Find All Numbers Disappeared in an Array.playground		448.Find All Numbers Disappeared in an Array.playground	Fix wrong link.	Jul 21, 2022
453.Minimum Moves to Equal Array Elements.playground		453.Minimum Moves to Equal Array Elements.playground	Fix wrong link.	Jul 21, 2022
455.Assign Cookies.playground		455.Assign Cookies.playground	Fix wrong link.	Jul 21, 2022
459.Repeated Substring Pattern.playground		459.Repeated Substring Pattern.playground	Fix wrong link.	Jul 21, 2022
461.Hamming Distance.playground		461.Hamming Distance.playground	Number complement.	Jul 18, 2022
476.Number Complement.playground		476.Number Complement.playground	Base 7.	Jul 21, 2022
482.License Key Formatting.playground		482.License Key Formatting.playground	Fix wrong link.	Jul 21, 2022
485.Max Consecutive Ones.playground		485.Max Consecutive Ones.playground	Base 7.	Jul 21, 2022
492.Construct the Rectangle.playground		492.Construct the Rectangle.playground	Construct the rectangle.	Jul 18, 2022
495.Teemo Attacking.playground		495.Teemo Attacking.playground	Next greater element I.	Jul 19, 2022
496.Next Greater Element I.playground		496.Next Greater Element I.playground	Fix wrong link.	Jul 21, 2022
500.Keyboard Row.playground		500.Keyboard Row.playground	Fix wrong link.	Jul 21, 2022
504.Base 7.playground		504.Base 7.playground	Base 7.	Jul 21, 2022
506.Relative Ranks.playground		506.Relative Ranks.playground	Relative ranks.	Aug 9, 2022
507.Perfect Number.playground		507.Perfect Number.playground	Perfect number.	Aug 13, 2022
509.Fibonacci Number.playground		509.Fibonacci Number.playground	Fibonacci number.	Aug 13, 2022
520.Detect Capital.playground		520.Detect Capital.playground	Detect capital.	Aug 15, 2022
521.Longest Uncommon Subsequence I.playground		521.Longest Uncommon Subsequence I.playground	Longest uncommon subsequence I.	Aug 22, 2022
5242.Greatest English Letter in Upper and Lower Case.playground		5242.Greatest English Letter in Upper and Lower Case.playground	New solution for question No.5242.	Jun 19, 2022
541.Reverse String II.playground		541.Reverse String II.playground	Reverse string II.	Aug 23, 2022
551.Student Attendance Record I.playground		551.Student Attendance Record I.playground	Student attendance record I.	Aug 23, 2022
557.Reverse Words in a String III.playground		557.Reverse Words in a String III.playground	Reverse words in a string III.	Aug 24, 2022
559.Maximum Depth of N-ary Tree.playground		559.Maximum Depth of N-ary Tree.playground	Maximum depth of n-ary tree.	Aug 24, 2022
561.Array Partition.playground		561.Array Partition.playground	Array partition.	Aug 25, 2022
566.Reshape the Matrix.playground		566.Reshape the Matrix.playground	Reshape the matrix.	Aug 25, 2022
575.Distribute Candies.playground		575.Distribute Candies.playground	Distribute candies.	Aug 27, 2022
58.Length of Last Word.playground		58.Length of Last Word.playground	Put all of them into "easy" folder.	Jun 19, 2022
594.Longest Harmonious Subsequence.playground		594.Longest Harmonious Subsequence.playground	Longest harmonious subsequence.	Aug 31, 2022
599.Minimum Index Sum of Two Lists.playground		599.Minimum Index Sum of Two Lists.playground	Optimize this algorithm.	Sep 3, 2022
66.Plus One.playground		66.Plus One.playground	Put all of them into "easy" folder.	Jun 19, 2022
67.Add Binary.playground		67.Add Binary.playground	Put all of them into "easy" folder.	Jun 19, 2022
69.Sqrt(x).playground		69.Sqrt(x).playground	Put all of them into "easy" folder.	Jun 19, 2022
70.Climbing Stairs.playground		70.Climbing Stairs.playground	Put all of them into "easy" folder.	Jun 19, 2022
83.Remove Duplicates from Sorted List.playground		83.Remove Duplicates from Sorted List.playground	Put all of them into "easy" folder.	Jun 19, 2022
88.Merge Sorted Array.playground		88.Merge Sorted Array.playground	Put all of them into "easy" folder.	Jun 19, 2022
9.Palindrome Number.playground		9.Palindrome Number.playground	Put all of them into "easy" folder.	Jun 19, 2022
94.Binary Tree Inorder Traversal.playground		94.Binary Tree Inorder Traversal.playground	New solution for question No.155 "Min Stack".	Jun 22, 2022
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