- 402. Remove K Digits (Medium)
- 988 Smallest String From Leaf (Medium)
- 2370 Longest Ideal Subsequence (Medium)
- 514 Freedom Trail (Hard)
- 1915 Number of Wonderful Substrings (Medium)
- 2000 Reverse Prefix Of Word (Easy)
- 165 Compare Version Numbers (Medium)
- 131 Palindrome Partitioning (Medium)
- 1255 Maximum Score Words formed by Letters (Hard)
- 140 Word Break II (Hard)
- 1208 Get Equal Substrings within Budget (Medium)
- 1404 Number of Steps to reduce a Number in Binary Representation to One (Medium)
- 3110 Score of a String (Easy)
- 344 Reverse String (Easy)
- 2486 Append Character to String to make Subsequence (Medium)
- 409 Longest Palindrome (Easy)
- 1002 Find Common Characters (Easy)
- 648 Replace Words (Medium)