Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2114 | Maximum Number of Words Found in Sentences | Easy | ArrayString |
| 2116 | Check if a Parentheses String Can Be Valid | Medium | StringStackGreedy |
| 2117 | Abbreviating the Product of a Range | Hard | Math |
| 2118 | Build the Equation | Hard | Database |
| 2119 | A Number After a Double Reversal | Easy | Math |
| 2119 | Recover the Original Array | Hard | ArrayHash TableTwo Pointers |
| 2120 | Execution of All Suffix Instructions Staying in a Grid | Medium | StringSimulation |
| 2121 | Intervals Between Identical Elements | Medium | ArrayHash TablePrefix Sum |
| 2123 | Minimum Operations to Remove Adjacent Ones in Matrix | Hard | ArrayGraphMatrix |
| 2124 | Check if All A's Appears Before All B's | Easy | String |
| 2124 | Maximum Employees to Be Invited to a Meeting | Hard | Depth-First SearchGraphTopological Sort |
| 2125 | Number of Laser Beams in a Bank | Medium | ArrayMathString |
| 2126 | Destroying Asteroids | Medium | ArrayGreedySorting |
| 2128 | Remove All Ones With Row and Column Flips | Medium | ArrayMathBit Manipulation |
| 2129 | Capitalize the Title | Easy | String |
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