| 646 | Maximum Length of Pair Chain | Medium |
| 649 | Dota2 Senate | Medium |
| 659 | Split Array into Consecutive Subsequences | Medium |
| 670 | Maximum Swap | Medium |
| 678 | Valid Parenthesis String | Medium |
| 680 | Valid Palindrome II | Easy |
| 714 | Best Time to Buy and Sell Stock with Transaction Fee | Medium |
| 738 | Monotone Increasing Digits | Medium |
| 757 | Set Intersection Size At Least Two | Hard |
| 763 | Partition Labels | Medium |
| 765 | Couples Holding Hands | Hard |
| 767 | Reorganize String | Medium |
| 768 | Max Chunks To Make Sorted II | Hard |
| 769 | Max Chunks To Make Sorted | Medium |
| 781 | Rabbits in Forest | Medium |
| 807 | Max Increase to Keep City Skyline | Medium |
| 826 | Most Profit Assigning Work | Medium |
| 846 | Hand of Straights | Medium |
| 857 | Minimum Cost to Hire K Workers | Hard |
| 860 | Lemonade Change | Easy |
| 861 | Score After Flipping Matrix | Medium |
| 870 | Advantage Shuffle | Medium |
| 871 | Minimum Number of Refueling Stops | Hard |
| 881 | Boats to Save People | Medium |
| 910 | Smallest Range II | Medium |
| 921 | Minimum Add to Make Parentheses Valid | Medium |
| 936 | Stamping The Sequence | Hard |
| 942 | DI String Match | Easy |
| 945 | Minimum Increment to Make Array Unique | Medium |
| 948 | Bag of Tokens | Medium |