Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| Move Sub-Tree of N-Ary Tree | Hard | Solve | |
| Find Users With Valid E-Mails |
| Easy |
| Solve |
| Water Bottles | Easy | Solve |
| Number of Nodes in the Sub-Tree With the Same Label | Medium | Solve |
| Maximum Product Subarray | Medium | Solve |
| Maximum Number of Non-Overlapping Substrings | Hard | Solve |
| Find a Value of a Mysterious Function Closest to Target | Hard | Solve |
| Diameter of N-Ary Tree | Medium | Solve |
| Count Odd Numbers in an Interval Range | Easy | Solve |
| Number of Sub-arrays With Odd Sum | Medium | Solve |
| Number of Good Ways to Split a String | Medium | Solve |
| Minimum Number of Increments on Subarrays to Form a Target Array | Hard | Solve |
| Patients With a Condition | Easy | Solve |
| Shuffle String | Easy | Solve |
| Minimum Suffix Flips | Medium | Solve |
| Find Minimum in Rotated Sorted Array | Medium | Solve |
| Number of Good Leaf Nodes Pairs | Medium | Solve |
| String Compression II | Hard | Solve |
| The Most Recent Three Orders | Medium | Solve |
| Find the Index of the Large Integer | Medium | Solve |
| Count Good Triplets | Easy | Solve |
| Find the Winner of an Array Game | Medium | Solve |
| Minimum Swaps to Arrange a Binary Grid | Medium | Solve |
| Get the Maximum Score | Hard | Solve |
| Guess the Majority in a Hidden Array | Medium | Solve |