截止至今LeetCode题目总量已经有1582题，估计将来每年平均增长300题左右，大部分人肯定是刷不完的，所以得有选择地刷LeetCode。
一种公认的刷题策略是按类别刷题，可是每个类别也有许多题，在有限的时间里到底该刷哪些题呢？个人根据LeetCode官方给出的每个题目的出现频率，整理并收录了每个类别里高频出现的题目，对于官方统计频率太低的题目，不予收录，最终得到了这个高频题目表格。
例如，对于下图中题号#275与#270的题目将被收录，并且#275出现频率大于#270；而对于题号#1011与#1182的题目，因为出现频率太低，将不被收录：
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动态规划篇-110题(Dynamic Programming, 110 problems)
数据日期： 2020/03/26 (此时LeetCode题目数量：1582)
数据来源： LeetCode官方，将不同类别的题目按照官方给的出现频率(Frequency)降序排列，取有频率统计的题。
| 排序 | 题号 | 题目 | 通过率 | 难度 |
|---|---|---|---|---|
| 1 | #5 | Longest Palindromic Substring | 0.291 | 中等 |
| 2 | #53 | Maximum Subarray | 0.499 | 简单 |
| 3 | #85 | Maximal Rectangle | 0.449 | 困难 |
| 4 | #95 | Unique Binary Search Trees II | 0.623 | 中等 |
| 5 | #10 | Regular Expression Matching | 0.269 | 困难 |
| 6 | #72 | Edit Distance | 0.567 | 困难 |
| 7 | #96 | Unique Binary Search Trees | 0.652 | 中等 |
| 8 | #312 | Burst Balloons | 0.584 | 困难 |
| 9 | #70 | Climbing Stairs | 0.481 | 简单 |
| 10 | #121 | Best Time to Buy and Sell Stock | 0.538 | 简单 |
| 11 | #64 | Minimum Path Sum | 0.651 | 中等 |
| 12 | #309 | Best Time to Buy and Sell Stock with Cooldown | 0.528 | 中等 |
| 13 | #546 | Remove Boxes | 0.496 | 困难 |
| 14 | #120 | Triangle | 0.641 | 中等 |
| 15 | #552 | Student Attendance Record II | 0.392 | 困难 |
| 16 | #698 | Partition to K Equal Sum Subsets | 0.41 | 中等 |
| 17 | #303 | Range Sum Query - Immutable | 0.606 | 简单 |
| 18 | #300 | Longest Increasing Subsequence | 0.44 | 中等 |
| 19 | #516 | Longest Palindromic Subsequence | 0.518 | 中等 |
| 20 | #221 | Maximal Square | 0.393 | 中等 |
| 21 | #32 | Longest Valid Parentheses | 0.3 | 困难 |
| 22 | #357 | Count Numbers with Unique Digits | 0.507 | 中等 |
| 23 | #198 | House Robber | 0.44 | 简单 |
| 24 | #264 | Ugly Number II | 0.508 | 中等 |
| 25 | #877 | Stone Game | 0.679 | 中等 |
| 26 | #466 | Count The Repetitions | 0.3 | 困难 |
| 27 | #718 | Maximum Length of Repeated Subarray | 0.492 | 中等 |
| 28 | #375 | Guess Number Higher or Lower II | 0.372 | 中等 |
| 29 | #279 | Perfect Squares | 0.551 | 中等 |
| 30 | #413 | Arithmetic Slices | 0.602 | 中等 |
| 31 | #673 | Number of Longest Increasing Subsequence | 0.348 | 中等 |
| 32 | #647 | Palindromic Substrings | 0.613 | 中等 |
| 33 | #410 | Split Array Largest Sum | 0.414 | 困难 |
| 34 | #363 | Max Sum of Rectangle No Larger Than K | 0.348 | 困难 |
| 35 | #97 | Interleaving String | 0.393 | 困难 |
| 36 | #132 | Palindrome Partitioning II | 0.426 | 困难 |
| 37 | #62 | Unique Paths | 0.596 | 中等 |
| 38 | #368 | Largest Divisible Subset | 0.371 | 中等 |
| 39 | #338 | Counting Bits | 0.749 | 中等 |
| 40 | #689 | Maximum Sum of 3 Non-Overlapping Subarrays | 0.445 | 困难 |
| 41 | #87 | Scramble String | 0.459 | 困难 |
| 42 | #322 | Coin Change | 0.387 | 中等 |
| 43 | #464 | Can I Win | 0.333 | 中等 |
| 44 | #139 | Word Break | 0.441 | 中等 |
| 45 | #638 | Shopping Offers | 0.571 | 中等 |
| 46 | #343 | Integer Break | 0.553 | 中等 |
| 47 | #664 | Strange Printer | 0.43 | 困难 |
| 48 | #174 | Dungeon Game | 0.404 | 困难 |
| 49 | #152 | Maximum Product Subarray | 0.377 | 中等 |
| 50 | #321 | Create Maximum Number | 0.278 | 困难 |
| 51 | #650 | 2 Keys Keyboard | 0.486 | 中等 |
| 52 | #600 | Non-negative Integers without Consecutive Ones | 0.305 | 困难 |
| 53 | #123 | Best Time to Buy and Sell Stock III | 0.422 | 困难 |
| 54 | #629 | K Inverse Pairs Array | 0.365 | 困难 |
| 55 | #486 | Predict the Winner | 0.508 | 中等 |
| 56 | #712 | Minimum ASCII Delete Sum for Two Strings | 0.62 | 中等 |
| 57 | #91 | Decode Ways | 0.233 | 中等 |
| 58 | #351 | Android Unlock Patterns | 0.59 | 中等 |
| 59 | #730 | Count Different Palindromic Subsequences | 0.474 | 困难 |
| 60 | #474 | Ones and Zeroes | 0.514 | 中等 |
| 61 | #213 | House Robber II | 0.37 | 中等 |
| 62 | #354 | Russian Doll Envelopes | 0.346 | 困难 |
| 63 | #741 | Cherry Pickup | 0.308 | 困难 |
| 64 | #956 | Tallest Billboard | 0.373 | 困难 |
| 65 | #639 | Decode Ways II | 0.264 | 困难 |
| 66 | #688 | Knight Probability in Chessboard | 0.463 | 中等 |
| 67 | #740 | Delete and Earn | 0.512 | 中等 |
| 68 | #1025 | Divisor Game | 0.689 | 简单 |
| 69 | #392 | Is Subsequence | 0.486 | 简单 |
| 70 | #1240 | Tiling a Rectangle with the Fewest Squares | 0.453 | 困难 |
| 71 | #115 | Distinct Subsequences | 0.474 | 困难 |
| 72 | #44 | Wildcard Matching | 0.271 | 困难 |
| 73 | #1130 | Minimum Cost Tree From Leaf Values | 0.572 | 中等 |
| 74 | #714 | Best Time to Buy and Sell Stock with Transaction Fee | 0.635 | 中等 |
| 75 | #188 | Best Time to Buy and Sell Stock IV | 0.294 | 困难 |
| 76 | #646 | Maximum Length of Pair Chain | 0.534 | 中等 |
| 77 | #967 | Numbers With Same Consecutive Differences | 0.355 | 中等 |
| 78 | #691 | Stickers to Spell Word | 0.448 | 困难 |
| 79 | #403 | Frog Jump | 0.335 | 困难 |
| 80 | #902 | Numbers At Most N Given Digit Set | 0.284 | 困难 |
| 81 | #377 | Combination Sum IV | 0.413 | 中等 |
| 82 | #63 | Unique Paths II | 0.326 | 中等 |
| 83 | #514 | Freedom Trail | 0.38 | 困难 |
| 84 | #494 | Target Sum | 0.441 | 中等 |
| 85 | #467 | Unique Substrings in Wraparound String | 0.403 | 中等 |
| 86 | #416 | Partition Equal Subset Sum | 0.461 | 中等 |
| 87 | #376 | Wiggle Subsequence | 0.415 | 中等 |
| 88 | #140 | Word Break II | 0.376 | 困难 |
| 89 | #1000 | Minimum Cost to Merge Stones | 0.307 | 困难 |
| 90 | #523 | Continuous Subarray Sum | 0.229 | 中等 |
| 91 | #576 | Out of Boundary Paths | 0.36 | 中等 |
| 92 | #517 | Super Washing Machines | 0.408 | 困难 |
| 93 | #256 | Paint House | 0.569 | 简单 |
| 94 | #361 | Bomb Enemy | 0.519 | 中等 |
| 95 | #304 | Range Sum Query 2D - Immutable | 0.431 | 中等 |
| 96 | #472 | Concatenated Words | 0.438 | 困难 |
| 97 | #656 | Coin Path | 0.284 | 困难 |
| 98 | #1024 | Video Stitching | 0.461 | 中等 |
| 99 | #446 | Arithmetic Slices II - Subsequence | 0.323 | 困难 |
| 100 | #651 | 4 Keys Keyboard | 0.573 | 中等 |
| 101 | #276 | Paint Fence | 0.436 | 简单 |
| 102 | #471 | Encode String with Shortest Length | 0.527 | 困难 |
| 103 | #1388 | Pizza With 3n Slices | 0.395 | 困难 |
| 104 | #1220 | Count Vowels Permutation | 0.526 | 困难 |
| 105 | #265 | Paint House II | 0.518 | 困难 |
| 106 | #568 | Maximum Vacation Days | 0.451 | 困难 |
| 107 | #727 | Minimum Window Subsequence | 0.398 | 困难 |
| 108 | #418 | Sentence Screen Fitting | 0.343 | 中等 |
| 109 | #1277 | Count Square Submatrices with All Ones | 0.665 | 中等 |
| 110 | #1067 | Digit Count in Range | 0.349 | 困难 |
相关/参考链接
leetcode-cn
leetcode