| 1397 | Find All Good Strings | Hard |
| 1399 | Count Largest Group | Easy |
| 1400 | Construct K Palindrome Strings | Medium |
| 1401 | Circle and Rectangle Overlapping | Medium |
| 1402 | Reducing Dishes | Hard |
| 1403 | Minimum Subsequence in Non-Increasing Order | Easy |
| 1404 | Number of Steps to Reduce a Number in Binary Representation to One | Medium |
| 1405 | Longest Happy String | Medium |
| 1406 | Stone Game III | Hard |
| 1408 | String Matching in an Array | Easy |
| 1409 | Queries on a Permutation With Key | Medium |
| 1410 | HTML Entity Parser | Medium |
| 1411 | Number of Ways to Paint N × 3 Grid | Hard |
| 1413 | Minimum Value to Get Positive Step by Step Sum | Easy |
| 1414 | Find the Minimum Number of Fibonacci Numbers Whose Sum Is K | Medium |
| 1415 | The k-th Lexicographical String of All Happy Strings of Length n | Medium |
| 1416 | Restore The Array | Hard |
| 1417 | Reformat The String | Easy |
| 1418 | Display Table of Food Orders in a Restaurant | Medium |
| 1419 | Minimum Number of Frogs Croaking | Medium |
| 1420 | Build Array Where You Can Find The Maximum Exactly K Comparisons | Hard |
| 1422 | Maximum Score After Splitting a String | Easy |
| 1423 | Maximum Points You Can Obtain from Cards | Medium |
| 1424 | Diagonal Traverse II | Medium |
| 1425 | Constrained Subsequence Sum | Hard |
| 1431 | Kids With the Greatest Number of Candies | Easy |
| 1432 | Max Difference You Can Get From Changing an Integer | Medium |
| 1433 | Check If a String Can Break Another String | Medium |
| 1434 | Number of Ways to Wear Different Hats to Each Other | Hard |
| 1436 | Destination City | Easy |