| 1 | Two Sum | LeetCode | Easy |
| 2 | Add Two Numbers | LeetCode | Medium |
| 3 | Longest Substring Without Repeating Characters | LeetCode | Medium |
| 4 | Median of Two Sorted Arrays | LeetCode | Hard |
| 5 | Longest Palindromic Substring | LeetCode | Medium |
| 6 | ZigZag Conversion | LeetCode | Medium |
| 7 | Reverse Integer | LeetCode | Easy |
| 8 | String to Integer (atoi) | LeetCode | Medium |
| 9 | Palindrome Number | LeetCode | Easy |
| 10 | Regular Expression Matching | LeetCode | Hard |
| 11 | Container With Most Water | LeetCode | Medium |
| 12 | Integer To Roman | LeetCode | Medium |
| 13 | Roman To Integer | LeetCode | Easy |
| 14 | Longest Common Prefix | LeetCode | Easy |
| 15 | 3 Sum | LeetCode | Medium |
| 16 | 3 Sum Closest | LeetCode | Medium |
| 17 | Letter Combinations Of A Phone Number | LeetCode | Medium |
| 18 | 4 Sum | LeetCode | Medium |
| 19 | Remove Nth Node From End Of List | LeetCode | Medium |
| 20 | Valid Parentheses | LeetCode | Easy |
| 21 | Merge Two Sorted Lists | LeetCode | Easy |
| 22 | Generate Parentheses | LeetCode | Medium |
| 23 | Merge K Sorted Lists | LeetCode | Hard |
| 24 | Swap Nodes In Pairs | LeetCode | Medium |
| 25 | Reverse Nodes In K-Group | LeetCode | Hard |
| 26 | Remove Duplicatesfrom Sorted Array | LeetCode | Easy |
| 27 | Remove Element | LeetCode | Easy |
| 28 | Implementstr Str() | LeetCode | Easy |
| 29 | Divide Two Integers | LeetCode | Medium |
| 31 | Next Permutation | LeetCode | Medium |
| 32 | Longest Valid Parentheses | LeetCode | Hard |
| 33 | Search In Rotated Sorted Array | LeetCode | Medium |
| 34 | Find First And Last Position Of Element In Sorted Array | LeetCode | Medium |
| 35 | Search Insert Position | LeetCode | Easy |
| 36 | Valid Sudoku | LeetCode | Medium |
| 37 | Suudku Solver | LeetCode | Hard |
| 38 | Count And Say | LeetCode | Easy |
| 39 | Combination Sum | LeetCode | Medium |
| 40 | Combination Sum II | LeetCode | Medium |
| 41 | First Missing Positive | LeetCode | Hard |
| 42 | Tapping Rain Water | LeetCode | Hard |
| 43 | Multiply Strings | LeetCode | Medium |
| 44 | Wildcard Mathcing | LeetCode | Hard |
| 47 | Permutations II | LeetCode | Medium |
| 48 | Rotate Image | LeetCode | Medium |
| 49 | Group Anagrams | LeetCode | Medium |
| 50 | Pow(x,n) | LeetCode | Medium |
| 51 | N-Queens | LeetCode | Hard |
| 52 | N-Queens II | LeetCode | Hard |
| 55 | Jump Game | LeetCode | Medium |
| 56 | Merge Intervals | LeetCode | Medium |
| 58 | Length Of Last Word | LeetCode | Easy |
| 61 | Rotate List | LeetCode | Medium |
| 62 | Unique Paths | LeetCode | Medium |
| 63 | Unique Paths II | LeetCode | Medium |
| 64 | Minimum Path Sum | LeetCode | Medium |
| 66 | Plus One | LeetCode | Easy |
| 67 | Add Binary | LeetCode | Easy |
| 68 | Text Justification | LeetCode | Hard |
| 70 | Climbing Stairs | LeetCode | Easy |
| 72 | Edit Distance | LeetCode | Hard |
| 74 | Search A2 D Matrix | LeetCode | Medium |
| 75 | Sort Colors | LeetCode | Medium |
| 76 | Minimum Window Substring | LeetCode | Hard |
| 78 | Subsets | LeetCode | Medium |
| 79 | Word Search | LeetCode | Medium |
| 82 | Remove Duplicates From Sorted List II | LeetCode | Medium |
| 83 | Remove Duplicates From Sorted List | LeetCode | Easy |
| 85 | Maximal Rectangle | LeetCode | Hard |
| 86 | Partition List | LeetCode | Medium |
| 87 | Scramble String | LeetCode | Hard |
| 88 | Merge Sorted Array | LeetCode | Easy |
| 91 | Decode Ways | LeetCode | Medium |
| 92 | Reverse Linked List II | LeetCode | Medium |
| 94 | Binary Tree Inorder Traversal | LeetCode | Medium |
| 95 | Unique Binary Search Trees II | LeetCode | Medium |
| 96 | Unique Binary Search Trees | LeetCode | Medium |
| 97 | Interleaving String | LeetCode | Hard |
| 98 | Valid Binary Search Tree | LeetCode | Medium |
| 100 | Same Tree | LeetCode | Easy |
| 101 | Symmetric Tree | LeetCode | Easy |
| 102 | Binary Tree Level Order Traversal | LeetCode | Medium |
| 103 | Binary Tree Zigzag Level Order Traversal | LeetCode | Medium |
| 104 | Maximum Depth Of Binary Tree | LeetCode | Easy |
| 110 | Balanced Binary Tree | LeetCode | Easy |
| 111 | Minimum Depth Of Binary Tree | LeetCode | Easy |
| 112 | Path Sum | LeetCode | Easy |
| 114 | Flatten Binary Tree To Linked List | LeetCode | Medium |
| 115 | Distinct Subsequnces | LeetCode | Hard |
| 117 | Populating Next Right Pointers In Each Node II | LeetCode | Medium |
| 121 | Best Time To Buy And Sell Stock | LeetCode | Easy |
| 122 | Best Time To Buy And Sell Stock II | LeetCode | Easy |
| 123 | Best Time To Buy And Sell Stock III | LeetCode | Hard |
| 124 | Binary Tree Maximum Path Sum | LeetCode | Hard |
| 125 | Valid Palindrome | LeetCode | Easy |
| 126 | Word Ladder II | LeetCode | Hard |
| 127 | Word Ladder | LeetCode | Medium |
| 128 | Longest Consecutive Sequence | LeetCode | Hard |
| 130 | Surrounded Regions | LeetCode | Medium |
| 132 | Palindrome Partitioning II | LeetCode | Hard |
| 133 | Clone Graph | LeetCode | Medium |
| 134 | Gas Station | LeetCode | Medium |
| 136 | Single Number | LeetCode | Easy |
| 138 | Copy List With Random Pointer | LeetCode | Medium |
| 140 | Word Break II | LeetCode | Hard |
| 141 | Linked List Cycle | LeetCode | Easy |
| 142 | Linked List Cycle II | LeetCode | Medium |
| 143 | Reorder List | LeetCode | Medium |
| 144 | Binary Tree Preorder Traversal | LeetCode | Medium |
| 145 | Binary Tree Postorder Traversal | LeetCode | Hard |
| 146 | LRU Cache | LeetCode | Medium |
| 151 | Reverse Words In A String | LeetCode | Medium |
| 152 | Maximum Product Subarry | LeetCode | Medium |
| 155 | Min Stack | LeetCode | Easy |
| 160 | Intersection Of Two Linked Lists | LeetCode | Easy |
| 162 | Find Peak Element | LeetCode | Medium |
| 166 | Fraction To Recurring Decimal | LeetCode | Medium |
| 167 | Two Sum II-Input Array Is Sorted | LeetCode | Easy |
| 169 | Majority Element | LeetCode | Easy |
| 170 | Two Sum III-Data Structure Design | LeetCode | Easy |
| 173 | Binary Search Tree Iterator | LeetCode | Medium |
| 179 | Largest Number | LeetCode | Medium |
| 188 | Best Time To Buy And Sell Stock IV | LeetCode | Hard |
| 189 | Rotate Array | LeetCode | Medium |
| 198 | House Robber | LeetCode | Easy |
| 200 | Number Of Islands | LeetCode | Medium |
| 203 | Remove Linked List Elements | LeetCode | Easy |
| 204 | Count Primes | LeetCode | Easy |
| 206 | Reverse Linked List | LeetCode | Easy |
| 207 | Course Schedule | LeetCode | Medium |
| 209 | Minimum Size Subarray Sum | LeetCode | Medium |
| 210 | Course Schedule II | LeetCode | Medium |
| 212 | Wird Search II | LeetCode | Hard |
| 214 | Shortest Palindrome | LeetCode | Hard |
| 215 | Kth Largest Element In An Array | LeetCode | Medium |
| 217 | Contains Duplicate | LeetCode | Easy |
| 219 | Contains Duplicate II | LeetCode | Easy |
| 220 | Contains Duplicate III | LeetCode | Medium |
| 221 | Maximal Square | LeetCode | Medium |
| 222 | Count Complete Tree Nodes | LeetCode | Medium |
| 225 | Implement Stack Using Queues | LeetCode | Easy |
| 226 | Invert Binary Tree | LeetCode | Easy |
| 227 | Basic Calculator II | LeetCode | Medium |
| 229 | Majority Element II | LeetCode | Medium |
| 230 | Kth Smallest Element Ina BST | LeetCode | Medium |
| 232 | Implement Queue Using Stacks | LeetCode | Easy |
| 234 | Palindrome Linked List | LeetCode | Easy |
| 235 | Lowest Common Ancestor Of A Binary Search Tree | LeetCode | Easy |
| 236 | Lowest Common Ancestor Of A Binary Tree | LeetCode | Medium |
| 238 | Product Of Array Except Self | LeetCode | Medium |
| 239 | Sliding Window Maximum | LeetCode | Hard |
| 240 | Search A2 D Matrix II | LeetCode | Medium |
| 242 | Valid Anagram | LeetCode | Easy |
| 252 | Meeting Rooms | LeetCode | Easy |
| 253 | Meeting Rooms II | LeetCode | Medium |
| 255 | Verify Preorder Sequence In Binary Search Tree | LeetCode | Medium |
| 256 | Paint House | LeetCode | Easy |
| 257 | B Inary Tree Paths | LeetCode | Easy |
| 258 | Add Digits | LeetCode | Easy |
| 264 | Ugly Number II | LeetCode | Medium |
| 265 | Paint House II | LeetCode | Hard |
| 268 | Missing Number | LeetCode | Easy |
| 269 | Alien Dictionary | LeetCode | Hard |
| 270 | Closest Binary Search Tree Value | LeetCode | Easy |
| 272 | Closest Binary Search Tree Value II | LeetCode | Hard |
| 273 | Integer To Egnlish Words | LeetCode | Hard |
| 278 | First Bad Version | LeetCode | Easy |
| 279 | Perfect Squares | LeetCode | Medium |
| 282 | Expression Add Operators | LeetCode | Hard |
| 283 | Move Zeros | LeetCode | Easy |
| 286 | Walls And Gates | LeetCode | Medium |
| 291 | Word Pattern II | LeetCode | Hard |
| 292 | Nim Game | LeetCode | Easy |
| 295 | Find Median From Data Stream | LeetCode | Hard |
| 297 | Serialize And Deserialize Binary Tree | LeetCode | Hard |
| 300 | Longest Increasing Subsequence | LeetCode | Medium |
| 301 | Remove Invalid Parentheses | LeetCode | Hard |
| 302 | Smallest Rectangle Enclosing Black Pixels | LeetCode | Hard |
| 305 | Number Of Islands II | LeetCode | Hard |
| 312 | Burst Balloons | LeetCode | Hard |
| 314 | Binary Tree Vertical Order Traversal | LeetCode | Medium |
| 316 | Remove Duplicate Letters | LeetCode | Medium |
| 317 | Shortest Distance From All Buildings | LeetCode | Hard |
| 320 | Generalized Abbreviation | LeetCode | Medium |
| 322 | Coin Change | LeetCode | Medium |
| 323 | Number Of Connected Components In An Undirected Graph | LeetCode | Medium |
| 325 | Maximum Size Subarray Sum Equals K | LeetCode | Medium |
| 329 | Longest Increasing Path In A Matrix | LeetCode | Hard |
| 336 | Palindrome Pairs | LeetCode | Hard |
| 338 | Counting Bits | LeetCode | Medium |
| 340 | Longest Substring With At Most K Distinct Characters | LeetCode | Hard |
| 344 | Reverse String | LeetCode | Easy |
| 346 | Moving Average From Data Stream | LeetCode | Easy |
| 347 | Top K Frequent Elements | LeetCode | Medium |
| 349 | Intersection Of Two Arrays | LeetCode | Easy |
| 350 | Intersection Of Two Arrays II | LeetCode | Easy |
| 354 | Russian Doll Envelopes | LeetCode | Hard |
| 355 | Design Twitter | LeetCode | Medium |
| 361 | Bomb Enemy | LeetCode | Medium |
| 363 | Max Sum Of Rectangle No Larger Than K | LeetCode | Hard |
| 377 | Combination Sum IV | LeetCode | Medium |
| 378 | Kth Smallest Element In A Sorted Matrix | LeetCode | Medium |
| 380 | Insert Delete Get Random O(1) | LeetCode | Medium |
| 383 | Ransom Note | LeetCode | Easy |
| 384 | Shuffle An Array | LeetCode | Medium |
| 386 | Lexicographical Numbers | LeetCode | Medium |
| 387 | First Unique Character In A String | LeetCode | Easy |
| 389 | Find The Difference | LeetCode | Easy |
| 390 | Elimination Game | LeetCode | Medium |
| 394 | Decode String | LeetCode | Medium |
| 395 | Longest Substring With At Least K Repeating Characters | LeetCode | Medium |
| 398 | Evaluate Division | LeetCode | Medium |
| 402 | Remove K Digits | LeetCode | Medium |
| 403 | Frog Jump | LeetCode | Hard |
| 406 | Queue Reconstruction By Height | LeetCode | Medium |
| 407 | Trapping Rain Water II | LeetCode | Hard |
| 409 | Longest Palindrome | LeetCode | Easy |
| 410 | Split Array Largest Sum | LeetCode | Hard |
| 412 | Fizz Buzz | LeetCode | Easy |
| 415 | Add Strings | LeetCode | Easy |
| 417 | Pacific Atlantic Water Flow | LeetCode | Medium |
| 424 | Longest Repeating Character Replacement | LeetCode | Medium |
| 430 | Flatten A Multilevel Doubly Linked List | LeetCode | Medium |
| 437 | Path Sum III | LeetCode | Medium |
| 440 | Kth Smallest In Lexicographical Order | LeetCode | Hard |
| 441 | Arranging Coins | LeetCode | Easy |
| 445 | Add Two Numbers II | LeetCode | Medium |
| 448 | Find All Numbers Disappered In An Array | LeetCode | Easy |
| 449 | Serialize And Deserialize BST | LeetCode | Medium |
| 450 | Delete Node In ABST | LeetCode | Medium |
| 451 | Sort Characters By Frequency | LeetCode | Medium |
| 454 | 4 Sum II | LeetCode | Medium |
| 463 | Island Perimeter | LeetCode | Easy |
| 465 | Optimal Account Balancing | LeetCode | Hard |
| 470 | Implement Rand10()Using Rand7() | LeetCode | Medium |
| 474 | Onesand Zeroes | LeetCode | Medium |
| 485 | Max Consecutive Ones | LeetCode | Easy |
| 493 | Reverse Pairs | LeetCode | Hard |
| 500 | Keyboard Row | LeetCode | Easy |
| 509 | Fibonacci Number | LeetCode | Easy |
| 516 | Longest Palindromic Subsequence | LeetCode | Medium |
| 518 | Coin Change II | LeetCode | Medium |
| 523 | Continuous Subarray Sum | LeetCode | Medium |
| 526 | Beautiful Arrangement | LeetCode | Medium |
| 528 | Random Pick With Weight | LeetCode | Medium |
| 529 | Minesweeper | LeetCode | Medium |
| 535 | Encode And Decode Tiny URL | LeetCode | Medium |
| 542 | 01 Matrix | LeetCode | Medium |
| 543 | Diameter Of Binary Tree | LeetCode | Easy |
| 545 | Boundary Of Binary Tree | LeetCode | Medium |
| 547 | Friend Circles | LeetCode | Medium |
| 561 | Array Partition I | LeetCode | Easy |
| 567 | Permutation In String | LeetCode | Medium |
| 581 | Shortest Unsorted Continuous Subarray | LeetCode | Easy |
| 582 | Kill Process | LeetCode | Medium |
| 589 | N-ary Tree Preorder Traversal | LeetCode | Easy |
| 611 | Valid Triangle Number | LeetCode | Medium |
| 621 | Task Scheduler | LeetCode | Medium |
| 647 | Palindromic Substrings | LeetCode | Medium |
| 658 | Find K Closest Elements | LeetCode | Medium |
| 662 | Maximum Width Of Binary Tree | LeetCode | Medium |
| 670 | Maximum Swap | LeetCode | Medium |
| 674 | Longest Continuous Increasing Subsequence | LeetCode | Easy |
| 679 | 24 Game | LeetCode | Hard |
| 680 | Valid Palindrome II | LeetCode | Easy |
| 681 | Next Closest Time | LeetCode | Medium |
| 682 | Maximum Product Of Three Numbers | LeetCode | Easy |
| 692 | Top K Frequent Words | LeetCode | Medium |
| 695 | Max Area Of Island | LeetCode | Medium |
| 697 | Degree Of An Array | LeetCode | Easy |
| 698 | Partition To K Equal Sum Subsets | LeetCode | Medium |
| 703 | Kth Largest Element In A Stream | LeetCode | Easy |
| 704 | Binary Search | LeetCode | Easy |
| 706 | Design Hash Map | LeetCode | Easy |
| 713 | Subarray Product Less Than K | LeetCode | Medium |
| 716 | Max Stack | LeetCode | Easy |
| 723 | Candy Crush | LeetCode | Medium |
| 726 | Number Of Atoms | LeetCode | Hard |
| 735 | Asteroid Collision | LeetCode | Medium |
| 741 | Cherry Pickup | LeetCode | Hard |
| 759 | Employee Free Time | LeetCode | Hard |
| 763 | Partition Labels | LeetCode | Medium |
| 767 | Reorganize String | LeetCode | Medium |
| 771 | Jewels And Stones | LeetCode | Easy |
| 772 | Basic Calculator III | LeetCode | Hard |
| 777 | Swap Adjacent In LR String | LeetCode | Medium |
| 785 | Is Graph Bipatite | LeetCode | Medium |
| 786 | Kth Smallest Prime Fraction | LeetCode | Hard |
| 796 | Rotate String | LeetCode | Easy |
| 811 | Subdomain Visits | LeetCode | Easy |
| 819 | Most Common Word | LeetCode | Easy |
| 822 | Card Flipping Game | LeetCode | Medium |
| 827 | Making A Large Island | LeetCode | Hard |
| 829 | Consecutive Numbers Sum | LeetCode | Hard |
| 837 | New21 Game | LeetCode | Medium |
| 850 | Rectangle Area II | LeetCode | Hard |
| 852 | Peak Index In A Mountain Array | LeetCode | Easy |
| 853 | Car Fleet | LeetCode | Medium |
| 856 | Score Of Parentheses | LeetCode | Medium |
| 863 | All Nodes Distance K In Binary Tree | LeetCode | Medium |
| 864 | Shortest Path To Get All Keys | LeetCode | Hard |
| 870 | Advantage Shuffle | LeetCode | Medium |
| 881 | Boats To Save People | LeetCode | Medium |
| 883 | Find And Replace In String | LeetCode | Medium |
| 887 | Super Egg Drop | LeetCode | Hard |
| 889 | Construct Binary Tree From Preorder And Postorder Traversal | LeetCode | Medium |
| 905 | Sort Array By Parity | LeetCode | Easy |
| 912 | Sort An Array | LeetCode | Medium |
| 914 | X Of A Kind In A Deck Of Cards | LeetCode | Easy |
| 924 | Minimize Malware Spread | LeetCode | Hard |
| 931 | Minimum Falling Path Sum | LeetCode | Medium |
| 937 | Reorder Data In Log Files | LeetCode | Easy |
| 950 | Reveal Cards In Increasing Order | LeetCode | Medium |
| 958 | Check Completeness Of A Binary Tree | LeetCode | Medium |
| 969 | Pancake Sorting | LeetCode | Medium |
| 973 | K Closest Points To Origin | LeetCode | Medium |
| 974 | Subarray Sums Divisible By K | LeetCode | Medium |
| 977 | Squares Of A Sorted Array | LeetCode | Easy |
| 981 | Time Based Key Value Store | LeetCode | Medium |
| 983 | Minimum Cost For Tickets | LeetCode | Medium |
| 986 | Interval List Intersections | LeetCode | Medium |
| 987 | Vertical Order Traversal Of A Binary Tree | LeetCode | Medium |
| 991 | Broken Calculator | LeetCode | Medium |
| 994 | Rotting Oranges | LeetCode | Medium |
| 1008 | Construct Binary Search Tree From Preorder Traversal | LeetCode | Medium |
| 1031 | Maximum Sum Of Two Non-Overlapping Subarrays | LeetCode | Medium |
| 1049 | Last Stone Weight II | LeetCode | Medium |
| 1051 | Height Checker | LeetCode | Easy |
| 1052 | Grumpy Bookstore Owner | LeetCode | Medium |
| 1054 | Distant Barcodes | LeetCode | Medium |
| 1057 | Campus Bikes | LeetCode | Medium |
| 1081 | Smallest Subsequence Of Distinct Characters | LeetCode | Medium |
| 1089 | Duplicate Zeros | LeetCode | Easy |
| 1092 | Two City Scheduling | LeetCode | Medium |
| 1095 | Find In Mountain Array | LeetCode | Hard |
| 1099 | Two Sum Less Than K | LeetCode | Easy |
| 1130 | Minimum Cost Tree From Leaf Values | LeetCode | Medium |
| 1143 | Longest Common Subsequence | LeetCode | Medium |
| 1153 | String Transforms Into Another String | LeetCode | Hard |
| 1156 | Swap For Longest Repeated Character Substring | LeetCode | Medium |
| 1169 | Invalid Transactions | LeetCode | Medium |
| 1172 | Dinner Plate Stacks | LeetCode | Hard |
| 1188 | Design Bounded Blocking Queue | LeetCode | Medium |
| 1197 | Minimum Knight Moves | LeetCode | Medium |
| 1200 | Minimum Absolute Difference | LeetCode | Easy |
| 1202 | Smallest String With Swaps | LeetCode | Medium |
| 1209 | Remove All Adjacent Duplicates In String | LeetCode | Medium |
| 1214 | Two Sum BS Ts | LeetCode | Medium |
| 1216 | Valid Palindrome III | LeetCode | Hard |
| 1235 | Maximum Profit In Job Scheduling | LeetCode | Hard |
| 1244 | Design A Leaderboard | LeetCode | Medium |
| 1249 | Minimum Remove To Make Valid Parentheses | LeetCode | Medium |
| 1254 | Number Of Closed Islands | LeetCode | Medium |
| 1262 | Greatest Sum Divisible By Three | LeetCode | Medium |
| 1266 | Minimum Time Visiting All Points | LeetCode | Easy |
| 1274 | Number Of Ships In A Rectangle | LeetCode | Hard |
| 1289 | Minimum Falling Path Sum II | LeetCode | Hard |
| 1290 | Convert Binary Number In A Linked List To Integer | LeetCode | Easy |
| 1295 | Find Numbers With Even Number Of Digits | LeetCode | Easy |
| 1334 | Find The City With The Smallest Number Of Neighbors At A Threshold Distance | LeetCode | Medium |
| 1339 | Maximum Product Of Splitted Binary Tree | LeetCode | Medium |
| 1347 | Minimum Number Of Steps To Make Two Strings Anagram | LeetCode | Medium |
| 1352 | Product Of The Last K Numbers | LeetCode | Medium |
| 1361 | Valid Binary Tree Nodes | LeetCode | Medium |
| 1365 | How Many Numbers Are Smaller Than The Current Number | LeetCode | Easy |
| 1366 | Rank Teams By Votes | LeetCode | Medium |
| 1374 | Generate A String With Characters That Have Odd Counts | LeetCode | Easy |
| 1375 | Bulb Switcher III | LeetCode | Medium |
| 1376 | Time Needed To Inform All Employees | LeetCode | Medium |
| 1396 | Design Underground System | LeetCode | Medium |
| 1423 | Maximum Points You Can Obtain From Cards | LeetCode | Medium |
| 1429 | First Unique Number | LeetCode | Medium |
| 1431 | Kids With The Greatest Number Of Candies | LeetCode | Easy |
| 1455 | Check If A Word Occurs As A Prefix Of Any Word In A Sentence | LeetCode | Easy |
| 1456 | Maximum Number Of Vowels In A Substring Of Given Length | LeetCode | Medium |
| 1457 | Pseudo-Palindromic Paths In A Binary Tree | LeetCode | Medium |
| 1458 | Max Dot Product Of Two Subsequences | LeetCode | Hard |
| 1465 | Maximum Area Of A Piece Of Cake After Horizontal And Vertical Cuts | LeetCode | Medium |
| 1470 | Shuffle The Array | LeetCode | Easy |
| 1472 | Design Browser History | LeetCode | Medium |
| 1480 | Running Sum Of1 D Array | LeetCode | Easy |
| 1481 | Least Number Of Unique Integers After K Removals | LeetCode | Medium |
| 1522 | Diameter Of N-Ary Tree | LeetCode | Medium |
| 1528 | Shuffle String | LeetCode | Easy |
| 1583 | Count Unhappy Friends | LeetCode | Medium |
| 1603 | Design Parking System | LeetCode | Easy |
| 6 | Merge Two Sorted Arrays | LintCode | Easy |
| 10 | String Permutations II | LintCode | Medium |
| 14 | First Position Of Target | LintCode | Easy |
| 38 | Search A2 D Matrix II | LintCode | Medium |
| 39 | Recover Rotated Sorted Array | LintCode | Easy |
| 40 | Implement Queue By Two Stacks | LintCode | Medium |
| 49 | Sort Letters By Case | LintCode | Medium |
| 61 | Search For A Range | LintCode | Medium |
| 89 | K Sum | LintCode | Hard |
| 90 | K Sum II | LintCode | Medium |
| 92 | Backpack | LintCode | Medium |
| 120 | Word Ladder | LintCode | Hard |
| 125 | Backpack II | LintCode | Medium |
| 127 | Topological Sorting | LintCode | Medium |
| 128 | Hash Function | LintCode | Easy |
| 129 | Rehashing | LintCode | Medium |
| 130 | Heapify | LintCode | Medium |
| 140 | Fast Power | LintCode | Medium |
| 143 | Sort Colors II | LintCode | Medium |
| 144 | Interleaving Positive And Negative Numbers | LintCode | Medium |
| 183 | Wood Cut | LintCode | Hard |
| 197 | Permutation Index | LintCode | Medium |
| 211 | String Permutation | LintCode | Easy |
| 235 | Prime Factorization | LintCode | Easy |
| 249 | Count Smaller Number Before Itself | LintCode | Hard |
| 254 | Drop Eggs | LintCode | Easy |
| 373 | Partition Arrayby Oddand Even | LintCode | Easy |
| 394 | Coin In Line | LintCode | Medium |
| 396 | Coin In Line III | LintCode | Hard |
| 437 | Copy Books | LintCode | Medium |
| 440 | Backpack III | LintCode | Medium |
| 443 | Two Sum-Greater Than Target | LintCode | Medium |
| 447 | Search In A Big Sorted Array | LintCode | Medium |
| 458 | Last Position Of Target | LintCode | Easy |
| 460 | Find K Closest Elements | LintCode | Medium |
| 461 | Kth Smallest Numbers In Unsorted Array | LintCode | Medium |
| 462 | Total Occurrence Of Target | LintCode | Easy |
| 464 | Sort Integers II | LintCode | Easy |
| 474 | Lowest Common Ancestor II | LintCode | Easy |
| 492 | Implement Queue By Linked List | LintCode | Easy |
| 494 | Implement Stack By Two Queues | LintCode | Easy |
| 502 | Mini Cassandra | LintCode | Medium |
| 521 | Remove Duplicate Numbers In Array | LintCode | Easy |
| 522 | Tiny URLII | LintCode | Medium |
| 538 | Memcache | LintCode | Medium |
| 545 | Top K Largest Numbers II | LintCode | Medium |
| 553 | Two Sum-Closest To Target | LintCode | Medium |
| 560 | Friendship Service | LintCode | Easy |
| 563 | Backpack V | LintCode | Medium |
| 577 | Merge K Sorted Interval Lists | LintCode | Medium |
| 578 | Lowest Common Ancestor III | LintCode | Medium |
| 584 | Drop Eggs II | LintCode | Medium |
| 585 | Maximum Number In Mountain Sequence | LintCode | Medium |
| 596 | Minimum Subtree | LintCode | Easy |
| 604 | Window Sum | LintCode | Easy |
| 609 | Two Sum-Less Than Or Eqaul To Target | LintCode | Medium |
| 610 | Two Sum-Difference Equals To Target | LintCode | Medium |
| 611 | Knight Shortest Path-II | LintCode | Medium |
| 612 | K Closest Points | LintCode | Medium |
| 625 | Partition Array II | LintCode | Medium |
| 628 | Maximum Subtree | LintCode | Easy |
| 630 | Knight Shortest Path II | LintCode | Medium |
| 654 | Sparse Matrix Multiplication | LintCode | Medium |
| 680 | Split String | LintCode | Medium |
| 685 | First Unique Number In Data Stream | LintCode | Medium |
| 724 | Minimum Partition | LintCode | Medium |
| 752 | Rogue Knight Sven | LintCode | Medium |
| 761 | Smallest Subset | LintCode | Medium |
| 816 | Traveling Salesman Problem | LintCode | Hard |
| 839 | Merge Two Sorted Interval Lists | LintCode | Easy |
| 841 | String Replace | LintCode | Hard |
| 843 | Digits Flip | LintCode | Medium |
| 845 | Greatest Common Divisor | LintCode | Easy |
| 960 | First Unique Number In Data Stream II | LintCode | Medium |
| 971 | Surplus Value Backpack | LintCode | Hard |
| 1166 | Recommended Results Are Scattered | LintCode | Easy |
| 1331 | English Software | LintCode | Easy |
| 1343 | Sum Of Two Strings | LintCode | Easy |
| 1375 | Substring With At Least K Distinct Characters | LintCode | Medium |
| 1479 | Can Reach The Endpoint | LintCode | Easy |
| 1790 | Rotate String II | LintCode | Easy |
| 1870 | Number Of Substrings With All Zeroes | LintCode | Medium |