2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Correct a Binary Tree | Medium | 16.6% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchBinary Tree |
| Change the Root of a Binary Tree | Medium | 16.6% | TopicsTreeDepth-First SearchBinary Tree |
| 1692. Count Ways to Distribute Candies | Hard | 16.6% | TopicsDynamic Programming |
| Largest Subarray Length K | Easy | 16.6% | TopicsArrayGreedy |
| 1737. Change Minimum Characters to Satisfy One of Three Conditions | Medium | 16.6% | TopicsHash TableStringCountingPrefix Sum |
| Checking Existence of Edge Length Limited Paths II | Hard | 16.6% | TopicsDepth-First SearchUnion-FindGraph TheoryDesignSortingHeap (Priority Queue)Minimum Spanning Tree |
| 1766. Tree of Coprimes | Hard | 16.6% | TopicsArrayMathTreeDepth-First SearchNumber Theory |
| 1753. Maximum Score From Removing Stones | Medium | 16.6% | TopicsMathGreedyHeap (Priority Queue) |
| 1774. Closest Dessert Cost | Medium | 16.6% | TopicsArrayDynamic ProgrammingBacktrackingKnapsack ProblemMixed Knapsack |
| Design Most Recently Used Queue | Medium | 16.6% | TopicsArrayLinked ListDivide and ConquerDesignSimulationDoubly-Linked ListSqrt DecompositionTreapSplay Tree |
| Find the Subtasks That Did Not Execute | Hard | 16.6% | TopicsDatabase |
| 1806. Minimum Number of Operations to Reinitialize a Permutation | Medium | 16.6% | TopicsArrayMathSimulation |
| Count Pairs of Equal Substrings With Minimum Difference | Medium | 16.6% | TopicsHash TableStringGreedy |
| Find Customers With Positive Revenue this Year | Easy | 16.6% | TopicsDatabase |
| 1850. Minimum Adjacent Swaps to Reach the Kth Smallest Number | Medium | 16.6% | TopicsTwo PointersStringGreedy |
| 1866. Number of Ways to Rearrange Sticks With K Sticks Visible | Hard | 16.6% | TopicsMathDynamic ProgrammingCombinatorics |
| 1870. Minimum Speed to Arrive on Time | Medium | 16.6% | TopicsArrayBinary Search |
| 1896. Minimum Cost to Change the Final Value of Expression | Hard | 16.6% | TopicsMathStringDynamic ProgrammingStack |
| Longest Word With All Prefixes | Medium | 16.6% | TopicsArrayStringDepth-First SearchTrie |
| 1883. Minimum Skips to Arrive at Meeting On Time | Hard | 16.6% | TopicsArrayDynamic Programming |
| Minimize Product Sum of Two Arrays | Medium | 16.6% | TopicsArrayGreedySorting |
| 1906. Minimum Absolute Difference Queries | Medium | 16.6% | TopicsArrayPrefix Sum |
| Longest Common Subsequence Between Sorted Arrays | Medium | 16.6% | TopicsArrayHash TableCounting |
| Erect the Fence II | Hard | 16.6% | TopicsArrayMathGeometryMinimum Enclosing Circle |
| 1980. Find Unique Binary String | Medium | 16.6% | TopicsArrayHash TableStringBacktracking |
