Leetcode 學習筆記

# LeetCode 學習筆記 - [前言](/Vol8OVKqSGKKcbOCxO1CNQ) ## 最近更新 ## Grind 75 - [1. Two Sum](/x91vDhFJQumSSdzAMScmmQ) - [3. Longest Substring Without Repeating Characters](/s-3RPRARTZyE1WDSCPbEow) - [5. Longest Palindromic Substring](/WNlwh1ymR5G1-nX0nsMp-A) - [383. Ransom Note](/EMWOgSsGTxK3WUnwa9SKSA) - [8. String to Integer (atoi)](/J6OnSqhNRK6zSbEq2F6NhA) - [11. Container With Most Water](/trgyhkbvRGS0x8dyTfZe8g) - [139. Word Break](/jEhdHb7CQn6LHq7q9I1lNg) - [141. Linked List Cycle](/xK6xxciCTr-BTOoTPUNc1Q) - [994. Rotting Oranges](/Wj-7GQMXRUOTwvFsmmxmfA) - [17. Letter Combinations of a Phone Number](/fx94JbxbQR2eo56FE0kC_w) - [20. Valid Parentheses](/bMHq5CFGRSuikYZIO02mvA) - [409. Longest Palindrome](/3EuInRa5S32Xy0NkXkgCnA) - [322. Coin Change](/ZkVLggr0QiCqHp4S59s3cw) - [125. Valid Palindrome](/406c01ovRZWxp6bl_iQWBA) ## NeetCode 150 - [1. Two Sum](/x91vDhFJQumSSdzAMScmmQ) - [2. Add Two Numbers](/n9_JInKXS-efy5mecqiHzQ) - [3. Longest Substring Without Repeating Characters](/s-3RPRARTZyE1WDSCPbEow) - [5. Longest Palindromic Substring](/WNlwh1ymR5G1-nX0nsMp-A) - [7. Reverse Integer](/kpQ7hmY4SDasSU92andGcA) - [11. Container With Most Water](/trgyhkbvRGS0x8dyTfZe8g) - [994. Rotting Oranges](/Wj-7GQMXRUOTwvFsmmxmfA) - [17. Letter Combinations of a Phone Number](/fx94JbxbQR2eo56FE0kC_w) - [20. Valid Parentheses](/bMHq5CFGRSuikYZIO02mvA) - [66. Plus One](/YPSR-vkSSLq9S_JyZwfkIg) - [70. Climbing Stairs](/VAFNmb6rRbuvxIsyfzT7TQ) - [125. Valid Palindrome](/406c01ovRZWxp6bl_iQWBA) - [139. Word Break](/jEhdHb7CQn6LHq7q9I1lNg) - [141. Linked List Cycle](/xK6xxciCTr-BTOoTPUNc1Q) - [238. Product of Array Except Self](/YkAXCRwfSG65ap85ZUELOg) - [704. Binary Search](/5_cRDxq6QFy5lVyi0TNvug) - [322. Coin Change](/ZkVLggr0QiCqHp4S59s3cw) ## LeetCode 75 ### Array / String - [1768. Merge Strings Alternately](/S3-B0sEUTByiGEwX8xRwKg) - [1071. Greatest Common Divisor of Strings](/sfO_0eRCQOyNbrezVUXW4g) - [1431. Kids With the Greatest Number of Candies](/SqYgehJJRsGt8FBEACUrig) - [605. Can Place Flowers](/QMvPRedNRFCB2WpnxK1oIw) - [345. Reverse Vowels of a String](/nE0GlUa3Q6-NVgc3uuLZCA) - [151. Reverse Words in a String](/jxprJcHLSMmYqxe_WHSmQA) - [238. Product of Array Except Self](/YkAXCRwfSG65ap85ZUELOg) - [334. Increasing Triplet Subsequence](/bDxTN3IgSBeGpA2Ovdd3fA) - [443. String Compression](/G4iPehCgSs2nTI--GJTLIg) ### Two Pointers - [283. Move Zeroes](/wibnb6pKQN2JqqwqXCEVqQ) - [392. Is Subsequence](/tBn1Kx9kRH6Kb8IMiPNCSA) - [11. Container With Most Water](/trgyhkbvRGS0x8dyTfZe8g) - [1679. Max Number of K-Sum Pairs](/A89uMaXGRSWNuyrMBiSwww) ### Sliding Window - [643. Maximum Average Subarray I](/jpNAQ5EkSD-EP-0TA12XNQ) - [1456. Maximum Number of Vowels in a Substring of Given Length](/G0dk1bInTXmJccxeYj5ECQ) - [1004. Max Consecutive Ones III](/i1Ax_iivQXSuFZh_HxRpZg) - [1493. Longest Subarray of 1's After Deleting One Element](/u-NoR4_aSI-pGvPvgjS59w) ### Prefix Sum - [1732. Find the Highest Altitude](/Rv0hQ2YOR-uLk9KOZlNmDA) - [724. Find Pivot Index](/2z4nFERUTM6Ges9TRt8bXA) ### Hash Map / Set - [2215. Find the Difference of Two Arrays](/a2U3HYbERqqvUW-jkj0Z_g) - [1207. Unique Number of Occurrences](/OYuv3-YTQcituDVbfEZdKw) - [1657. Determine if Two Strings Are Close](/84CyuLq5Q3aDK8AHHt-9SQ) - [2352. Equal Row and Column Pairs](/rWoKMNBcSyOTIFlllhqo3w) ### Stack - [2390. Removing Stars From a String](/zPmiEThYTUGhdcuo64keTg) - [735. Asteroid Collision](/rJYpyj93RDmuAFkypSXaQA) - [394. Decode String](/8-z0-LmZRdam_111eIX_JA) ### Queue - [933. Number of Recent Calls](/UIZaOhBoRRG4o5bjpFSz5Q) - [649. Dota2 Senate](/vrh4bpK9SWa8mdsNwQnqTw) ### Linked List - [2095. Delete the Middle Node of a Linked List](/IZ471NvWR1WzOnugct7bqA) - [328. Odd Even Linked List](/wHjZu6RmTUWUZtpIel-zDw) - [206. Reverse Linked List](/JIECJF9gQR6A-yoMXhcptg) - [2130. Maximum Twin Sum of a Linked List](/GQLmiUumRD6C5dLnye7iiA) ### Binary Tree - DFS - [104. Maximum Depth of Binary Tree](/B-QbOscXQkyYYaaUjSyZGA) - [872. Leaf-Similar Trees](/E3CAjsNXQLWpFGh40ezWDw) ### Graphs - BFS - [994. Rotting Oranges](/Wj-7GQMXRUOTwvFsmmxmfA) ### Backtracking - [17. Letter Combinations of a Phone Number](/fx94JbxbQR2eo56FE0kC_w) ## Top Interview 150 ### Array / String - [88. Merge Sorted Array](/EgUEAz21RxKVGdoZZUlKug) - [27. Remove Element](/g22alA9nTT-aTVIpveX2Eg) - [26. Remove Duplicates from Sorted Array](/XcQwYhiOQZWpqtvzrBmvBA) - [80. Remove Duplicates from Sorted Array II](/JDNhwZqoTDq56MPVQmfc0w) - [169. Majority Element](/XSy0kG0tS9iKrDC5zbYsQw) - [189. Rotate Array](/7mdd1WZcR6KAFg6fXiTx4w) - [238. Product of Array Except Self](/YkAXCRwfSG65ap85ZUELOg) - [151. Reverse Words in a String](/jxprJcHLSMmYqxe_WHSmQA) - [6. Zigzag Conversion](/Y7T95LD-T_KIkMK1F7U1tA) - [28. Find the Index of the First Occurrence in a String](/r6Xt90v_Q-uBmryc9tijlA) ### Two Pointers - [125. Valid Palindrome](/406c01ovRZWxp6bl_iQWBA) - [392. Is Subsequence](/tBn1Kx9kRH6Kb8IMiPNCSA) - [11. Container With Most Water](/trgyhkbvRGS0x8dyTfZe8g) ### Sliding Window - [3. Longest Substring Without Repeating Characters](/s-3RPRARTZyE1WDSCPbEow) ### Hashmap - [383. Ransom Note](/EMWOgSsGTxK3WUnwa9SKSA) - [1. Two Sum](/x91vDhFJQumSSdzAMScmmQ) ### Stack - [20. Valid Parentheses](/bMHq5CFGRSuikYZIO02mvA) ### Backtracking - [17. Letter Combinations of a Phone Number](/fx94JbxbQR2eo56FE0kC_w) ### Math - [66. Plus One](/YPSR-vkSSLq9S_JyZwfkIg) ### 1D DP - [70. Climbing Stairs](/VAFNmb6rRbuvxIsyfzT7TQ) - [139. Word Break](/jEhdHb7CQn6LHq7q9I1lNg) ### Multidimensional DP - [5. Longest Palindromic Substring](/WNlwh1ymR5G1-nX0nsMp-A) ## Others - [9. Palindrome Number](/pPtJrZdzTjK7ee874cAG1A) - [29. Divide Two Integers](/ybuEyjXGQSCeTzldT2qWQw) - [110. Balanced Binary Tree](/RGDfVIk3RzKBsxfq6depWQ) - [231. Power of Two](/PtTgjm2dR8GS8RGVRhrtFQ) - [326. Power of Three](/Nv8ERwHAT6yUyGV6NbnbmQ) - [342. Power of Four](/EbBusZFhTSGQvQvGq7MoOg) - [520. Detect Capital](/OdTWybwdTmisiaMYjqrMxA) - [744. Find Smallest Letter Greater Than Target](/c5fNsIIIRn--PA65eWIsyg) - [796. Rotate String](/UmLdrekcRMyP7iVM7EGqSw) - [1200. Minimum Absolute Difference](/aMUSVVNdRX2vUizZx3gjFA) - [1266. Minimum Time Visiting All Points](/dhnyG7WKQvaqxxcXbRouZA) - [1344. Angle Between Hands of a Clock](/4vzbRCPIQqq51AWOdnbuzg) - [1653. Minimum Deletions to Make String Balanced](/9G-nm5FcT8K23AJUwbPbRQ) - [1877. Minimize Maximum Pair Sum in Array](/EEvtCpNBQO66soetOwql7A) - [2124. Check if All A's Appears Before All B's](/J-em73flTmCpcYLOKVefww) - [3010. Divide an Array Into Subarrays With Minimum Cost I](/omKvblbjTSqAtnu4bSHsKQ) - [3314. Construct the Minimum Bitwise Array I](/h-go9DCAQi6vg4qivsx0wg) - [3379. Transformed Array](/A8Dop7ZeTS233Wy6BobtcQ) - [3507. Minimum Pair Removal to Sort Array I](/HlLW5X7DTqS8VTWtC_Huww) - [3634. Minimum Removals to Balance Array](/rRFdyPo7QjuIhE5UDsRMWw) - [3637. Trionic Array I](/Y1plNQt8QyWct6JHQkIkSw) - [3640. Trionic Array II](/1wp-GI3uTGOaKIV1O03Ngw) ## Biweekly Contest 174 - [Q1. Best Reachable Tower](/7DfGPqBeRkmXXUXVJkxaKA) - [Q2. Minimum Operations to Reach Target Array](/cE1S9_1fQ4OSk-GkeWmECQ) ## Weekly Contest 485 - [Q1. Vowel-Consonant Score](/oQZppbajSQqOb8qLt5-uSA) - [Q2. Maximum Capacity Within Budget](/tqc5Z5clTey2NQOn0whb-g) - [Q3. Design Auction System](/TFegUdUCRyyL8BNFdueAeQ) ## Weekly Contest 486 - [Q1. Minimum Prefix Removal to Make Array Strictly Increasing](/y_qu69wDSUik_2TsDR05eA) - [Q2. Rotate Non-Negative Elements](/QR5cnMQ4T0eTLuOmALXLPQ) - [Q4. Find Nth Smallest Integer with K One Bits](/sECWk2uGQyGCImvh0SdXuw) ## Biweekly Contest 175 - [Q1. Reverse Letters Then Special Characters in a String](/0SPxS6MkRey6_it0a3IYvg) - [Q2. Minimum K to Reduce Array Within Limit](/razx35fuQ3-aQ42dALaclg) ## Weekly Contest 487 - [Q1. Count Monobit Integers](/gvhpU3qzSgC8FBtkoRXDsg) - [Q2. Final Element After Subarray Deletions](/vl7obK6zS2eMEpba5Vc7Fw) - [Q3. Design Ride Sharing System](/wkUFR16HRme9Km3qXRO4tg) - [Q4. Longest Alternating Subarray After Removing At Most One Element](/pZl0T3EoSHOOsgwKFQSVAQ)

Syntax	Example	Reference
# Header	Header	基本排版
- Unordered List	Unordered List
1. Ordered List	Ordered List
- [ ] Todo List	Todo List
> Blockquote	Blockquote
Bold font	Bold font
Italics font	Italics font
~~Strikethrough~~	~~Strikethrough~~
19^th^	19^th
H~2~O	H₂O
++Inserted text++	Inserted text
==Marked text==	Marked text
[link text](https:// "title")	Link
![image alt](https:// "title")	Image
`Code`	`Code`	在筆記中貼入程式碼
```javascript var i = 0; ```	`var i = 0;`
:smile:		Emoji list
{%youtube youtube_id %}	Externals
$L^aT_eX$	L^aT_eX
:::info This is a alert area. :::	This is a alert area.