| 231. Power of Two | Solution | Solve | Easy | | |
| 238. Product of Array Except Self | Solution | Solve | Medium | | |
| 239. Sliding Window Maximum | Solution | Solve | Hard | | |
| 240. Search a 2D Matrix II | Solution | Solve | Medium | | |
| 264. Ugly Number II | Solution | Solve | Medium | | |
| 268. Missing Number | Solution | Solve | Easy | | |
| 273. Integer to English Words | Solution | Solve | Hard | | |
| 277. Find the Celebrity | Solution | Solve | Medium | | |
| 279. Perfect Squares | Solution | Solve | Medium | | |
| 283. Move Zeroes | Solution | Solve | Easy | | |
| 287. Find the Duplicate Number | Solution | Solve | Medium | | |
| 289. Game of Life | Solution | Solve | Medium | | |
| 295. Find Median from Data Stream | Solution | Solve | Hard | | |
| 300. Longest Increasing Subsequence | Solution | Solve | Medium | | |
| 309. Best Time to Buy and Sell Stock with Cooldown | Solution | Solve | Medium | | |
| 312. Burst Balloons | Solution | Solve | Hard | | |
| 322. Coin Change | Solution | Solve | Medium | | |
| 325. Maximum Size Subarray Sum Equals k | Solution | Solve | Medium | | |
| 326. Power of Three | Solution | Solve | Easy | | |
| 328. Odd Even Linked List | Solution | Solve | Medium | | |
| 336. Palindrome Pairs | Solution | Solve | Hard | | |
| 340. Longest Substring with At Most K Distinct Characters | Solution | Solve | Medium | | |
| 344. Reverse String | Solution | Solve | Easy | | |
| 347. Top K Frequent Elements | Solution | Solve | Medium | | |
| 354. Russian Doll Envelopes | Solution | Solve | Hard | | |
| 380. Insert Delete GetRandom O(1) | Solution | Solve | Medium | | |
| 387. First Unique Character in a String | Solution | Solve | Easy | | |
| 394. Decode String | Solution | Solve | Medium | | |
| 399. Evaluate Division | Solution | Solve | Medium | | |
| 407. Trapping Rain Water II | Solution | Solve | Hard | | |
| 412. Fizz Buzz | Solution | Solve | Easy | | |
| 414. Third Maximum Number | Solution | Solve | Easy | | |
| 416. Partition Equal Subset Sum | Solution | Solve | Medium | | |
| 421. Maximum XOR of Two Numbers in an Array | Solution | Solve | Medium | | |
| 424. Longest Repeating Character Replacement | Solution | Solve | Medium | | |
| 435. Non-overlapping Intervals | Solution | Solve | Medium | | |
| 443. String Compression | Solution | Solve | Medium | | |
| 445. Add Two Numbers II | Solution | Solve | Medium | | |
| 452. Minimum Number of Arrows to Burst Balloons | Solution | Solve | Medium | | |
| 456. 132 Pattern | Solution | Solve | Medium | | |
| 457. Circular Array Loop | Solution | Solve | Medium | | |
| 460. LFU Cache | Solution | Solve | Hard | | |
| 465. Optimal Account Balancing | Solution | Solve | Hard | | |
| 487. Max Consecutive Ones II | Solution | Solve | Medium | | |
| 496. Next Greater Element I | Solution | Solve | Easy | | |
| 503. Next Greater Element II | Solution | Solve | Medium | | |
| 516. Longest Palindromic Subsequence | Solution | Solve | Medium | | |
| 540. Single Element in a Sorted Array | Solution | Solve | Medium | | |
| 560. Subarray Sum Equals K | Solution | Solve | Medium | | |
| 564. Find the Closest Palindrome | Solution | Solve | Hard | | |
