| 268 | Missing Number | Easy |
| 273 | Integer to English Words | Hard |
| 279 | Perfect Squares | Medium |
| 282 | Expression Add Operators | Hard |
| 313 | Super Ugly Number | Medium |
| 319 | Bulb Switcher | Medium |
| 326 | Power of Three | Easy |
| 335 | Self Crossing | Hard |
| 342 | Power of Four | Easy |
| 343 | Integer Break | Medium |
| 357 | Count Numbers with Unique Digits | Medium |
| 365 | Water and Jug Problem | Medium |
| 367 | Valid Perfect Square | Easy |
| 368 | Largest Divisible Subset | Medium |
| 371 | Sum of Two Integers | Medium |
| 372 | Super Pow | Medium |
| 375 | Guess Number Higher or Lower II | Medium |
| 380 | Insert Delete GetRandom O(1) | Medium |
| 381 | Insert Delete GetRandom O(1) - Duplicates allowed | Hard |
| 382 | Linked List Random Node | Medium |
| 384 | Shuffle an Array | Medium |
| 390 | Elimination Game | Medium |
| 396 | Rotate Function | Medium |
| 398 | Random Pick Index | Medium |
| 400 | Nth Digit | Medium |
| 405 | Convert a Number to Hexadecimal | Easy |
| 412 | Fizz Buzz | Easy |
| 415 | Add Strings | Easy |
| 423 | Reconstruct Original Digits from English | Medium |
| 441 | Arranging Coins | Easy |