Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1996 | Modify the Matrix | Easy | ArrayMatrix |
| 1997 | Monotone Increasing Digits | Medium | MathGreedy |
| 1998 | Most Beautiful Item for Each Query | Medium | ArrayBinary SearchSorting |
| 1999 | Most Common Word | Easy | ArrayHash TableString |
| 2000 | Most Expensive Item That Can Not Be Bought | Medium | MathDynamic ProgrammingNumber Theory |
| 2001 | Most Frequent Even Element | Easy | ArrayHash TableCounting |
| 2002 | Most Frequent IDs | Medium | ArrayHash TableHeap (Priority Queue) |
| 2003 | Most Frequent Number Following Key In an Array | Easy | ArrayHash TableCounting |
| 2004 | Most Frequent Prime | Medium | ArrayHash TableMath |
| 2005 | Most Popular Video Creator | Medium | ArrayHash TableString |
| 2006 | Most Profitable Path in a Tree | Medium | ArrayTreeDepth-First Search |
| 2007 | Movement of Robots | Medium | ArrayBrainteaserSorting |
| 2008 | Movie Rating | Medium | Database |
| 2009 | Moving Average from Data Stream | Easy | ArrayDesignQueue |
| 2010 | Moving Stones Until Consecutive II | Medium | ArrayMathSliding Window |
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