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原创 LeetCode 1588. Sum of All Odd Length Subarrays
LeetCode 1588. Sum of All Odd Length Subarrays (Easy) 主要知识点:array,算法技巧;优先级:4
2023-09-15 15:17:04 226
原创 1413. Minimum Value to Get Positive Step by Step Sum
这道题说是从一个startValue开始,从左往右加数组里的数字,要保证每次加完这个值都不小于1。翻译过来就是,求这个数组的prefix sum最小的那个数,如果最小的就不小于1,那就return最小的startValue which is 1,如果最小的小于1,那就return (-sum) + 1。
2023-09-14 14:45:01 133
原创 LeetCode 724. Find Pivot Index / 1991. Find the Middle Index in Array
LeetCode 724. Find Pivot Index / 1991. Find the Middle Index in Array (Easy) 主要知识点;prefix sum;优先级:4
2023-09-14 14:36:22 166
原创 LeetCode 933. Number of Recent Calls
LeetCode 933. Number of Recent Calls (Easy) 主要知识点:queue;优先级:4
2023-09-13 14:06:00 152
原创 LeetCode 2073. Time Needed to Buy Tickets
LeetCode 2073. Time Needed to Buy Tickets (Easy) 主要知识点:array;优先级:4
2023-09-13 13:45:29 99
原创 LeetCode 222. Count Complete Tree Nodes
LeetCode 222. Count Complete Tree Nodes (Easy);主要知识点:tree;优先级:5
2023-09-12 16:00:04 126
原创 2465. Number of Distinct Averages
2465. Number of Distinct Averages (Easy) 主要知识点:array, two pointers, sort, set;优先级:1
2023-09-11 15:10:16 69
原创 LeetCode 2511. Maximum Enemy Forts That Can Be Captured
LeetCode 2511. Maximum Enemy Forts That Can Be Captured (Easy) 主要知识点:array, two pointers;优先级:4
2023-09-11 14:59:12 150
原创 LeetCode 2000. Reverse Prefix of Word
LeetCode 2000. Reverse Prefix of Word (Easy) 主要知识点:string;优先级:1
2023-09-01 14:46:52 625
原创 LeetCode 1385. Find the Distance Value Between Two Arrays
LeetCode 1385. Find the Distance Value Between Two Arrays (Easy) 主要知识点:binary search;优先级:3
2023-08-31 15:58:07 541
原创 LeetCode 1768. Merge Strings Alternately
LeetCode 1768. Merge Strings Alternately (Easy) 主要知识点:array, two pointers;优先级:1
2023-08-31 14:56:06 485
原创 LeetCode 1346. Check If N and Its Double Exist
LeetCode 1346. Check If N and Its Double Exist (Easy);主要知识点:set;优先级:2
2023-08-30 10:26:40 329
原创 LeetCode 1332. Remove Palindromic Subsequences
LeetCode 1332. Remove Palindromic Subsequences (Easy) 主要知识点:string, two pointers;优先级:1
2023-08-30 10:15:31 260
原创 LeetCode 1089. Duplicate Zeros
LeetCode 1089. Duplicate Zeros (Easy) 主要知识点:array, two pointers;优先级:4
2023-08-29 15:20:45 228
原创 LeetCode 925. Long Pressed Name
LeetCode 925. Long Pressed Name (Easy) 主要知识点:string, two pointers;优先级:4(kind of套路吧)
2023-08-29 14:46:13 302
原创 922. Sort Array By Parity II
922. Sort Array By Parity II (Easy) 主要知识点:array, two pointers;优先级:2(905变体)
2023-08-28 15:06:18 67
原创 LeetCode 917. Reverse Only Letters
LeetCode 917. Reverse Only Letters (Easy) 主要知识点:array, two pointers;优先级:2
2023-08-27 15:16:13 238
原创 LeetCode 905. Sort Array By Parity
LeetCode 905. Sort Array By Parity (Easy) 主要知识点:array, two pointer;优先级:3.5
2023-08-27 14:59:22 442
原创 LeetCode 832. Flipping an Image
LeetCode 832. Flipping an Image (Easy) 主要知识点:array;优先级:1
2023-08-26 15:45:36 310
原创 LeetCode 821. Shortest Distance to a Character
LeetCode 821. Shortest Distance to a Character (Easy) 主要知识点:string;优先级:3
2023-08-24 15:48:26 484
原创 LeetCode 696. Count Binary Substrings
LeetCode 696. Count Binary Substrings (Easy) 主要知识点:string、算法技巧;优先级:4(主要是记住解法)
2023-08-24 14:13:41 399
原创 LeetCode 557. Reverse Words in a String III
LeetCode 557. Reverse Words in a String III (Easy) 主要知识点:string;优先级:3
2023-07-11 16:00:40 176
原创 LeetCode 541. Reverse String II
LeetCode 541. Reverse String II (Easy) 主要知识点:string;优先级:3.5
2023-07-11 15:40:32 265
原创 LeetCode 1763. Longest Nice Substring
LeetCode 1763. Longest Nice Substring (Easy) 主要知识点:divide and conquer;优先级:5
2023-04-04 16:02:13 263
原创 LeetCode 1863. Sum of All Subset XOR Totals
LeetCode 1863. Sum of All Subset XOR Totals (Easy) 主要知识点:backtrack;优先级:5
2023-03-29 16:18:57 247
原创 LeetCode 401. Binary Watch
LeetCode 401. Binary Watch (Easy);主要知识点:backtrack;优先级:5
2023-03-27 16:39:40 642
原创 LeetCode 1700. Number of Students Unable to Eat Lunch
LeetCode 1700. Number of Students Unable to Eat Lunch (Easy) 主要知识点:queue, array;优先级:4
2023-03-25 16:02:48 546
原创 LeetCode 1614. Maximum Nesting Depth of the Parentheses
LeetCode 1614. Maximum Nesting Depth of the Parentheses (Easy) 主要知识点:stack, string;优先级:2
2023-03-25 15:37:21 303
原创 LeetCode 1598. Crawler Log Folder
LeetCode 1598. Crawler Log Folder (Easy) 主要知识点:强行stack?;优先级:0
2023-03-23 15:21:05 283
原创 LeetCode 1544. Make The String Great
LeetCode 1544. Make The String Great (Easy) 主要知识点:stack, string;优先级:4
2023-03-23 15:02:17 291
原创 LeetCode 1475. Final Prices With a Special Discount in a Shop
LeetCode 1475. Final Prices With a Special Discount in a Shop (Easy) 主要知识点:stack (monotonic stack);优先级:5
2023-03-23 14:43:03 631
原创 LeetCode 1047. Remove All Adjacent Duplicates In String
LeetCode 1047. Remove All Adjacent Duplicates In String (Easy) 主要知识点:stack, string, 2 pointers;优先级:4
2023-03-22 16:33:17 339
原创 LeetCode 844. Backspace String Compare
LeetCode 844. Backspace String Compare (Easy) 主要知识点:stack, string, 2 pointers;优先级:5
2023-03-21 16:14:41 279
原创 LeetCode 1021. Remove Outermost Parentheses
LeetCode 1021. Remove Outermost Parentheses (Easy) 主要知识点:stack, string;优先级:4
2023-03-21 15:46:19 228
原创 LeetCode 682. Baseball Game
LeetCode 682. Baseball Game (Easy) 主要知识点:stack;优先级:2
2023-03-20 15:53:47 218
原创 1791. Find Center of Star Graph
1791. Find Center of Star Graph (Easy) 主要知识点:graph;优先级:4(主要是精妙的解法需要复习)
2023-03-18 15:48:50 329
原创 LeetCode 1971. Find if Path Exists in Graph
LeetCode 1971. Find if Path Exists in Graph (Easy) 主要知识点:graph, bfs, dfs, union find;优先级:5
2023-03-17 16:33:51 521
原创 LeetCode 733. Flood Fill
LeetCode 733. Flood Fill (Easy) 主要知识点:graph, dfs, bfs;优先级:5(算是例题吧)
2023-03-14 17:56:21 138
原创 LeetCode 2437. Number of Valid Clock Times
LeetCode 2437. Number of Valid Clock Times (Easy) 主要知识点:string;优先级:3
2023-03-13 17:20:48 169
原创 LeetCode 2427. Number of Common Factors
LeetCode 2427. Number of Common Factors (Easy) 主要知识点:math (gcd);优先级:3
2023-03-12 16:52:42 108
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