| 979 | Distribute Coins in Binary Tree | Medium |
| 980 | Unique Paths III | Hard |
| 981 | Time Based Key-Value Store | Medium |
| 982 | Triples with Bitwise AND Equal To Zero | Hard |
| 983 | Minimum Cost For Tickets | Medium |
| 984 | String Without AAA or BBB | Medium |
| 985 | Sum of Even Numbers After Queries | Medium |
| 986 | Interval List Intersections | Medium |
| 987 | Vertical Order Traversal of a Binary Tree | Hard |
| 988 | Smallest String Starting From Leaf | Medium |
| 989 | Largest Component Size by Common Factor | Hard |
| 989 | Add to Array-Form of Integer | Easy |
| 990 | Satisfiability of Equality Equations | Medium |
| 991 | Broken Calculator | Medium |
| 992 | Subarrays with K Different Integers | Hard |
| 993 | Tallest Billboard | Hard |
| 993 | Cousins in Binary Tree | Easy |
| 994 | Rotting Oranges | Medium |
| 995 | Minimum Number of K Consecutive Bit Flips | Hard |
| 996 | Number of Squareful Arrays | Hard |
| 997 | Find the Town Judge | Easy |
| 998 | Maximum Binary Tree II | Medium |
| 999 | Available Captures for Rook | Easy |
| 1000 | Minimum Cost to Merge Stones | Hard |
| 1000 | Delete Columns to Make Sorted III | Hard |
| 1001 | Grid Illumination | Hard |
| 1002 | Find Common Characters | Easy |
| 1003 | Check If Word Is Valid After Substitutions | Medium |
| 1004 | Max Consecutive Ones III | Medium |
| 1005 | Maximize Sum Of Array After K Negations | Easy |