Master DSA Topics - February, 2026

Practice problems across 75+ categories

All Coding Problems

Practice coding problems across all companies and topics 3600 problems | 879 Easy | 1856 Medium | 842 Hard

# Problem Difficulty Topics
1800 Maximum Ascending Subarray Sum Easy
Array
1801 Number of Orders in the Backlog Medium
ArrayHeap (Priority Queue)Simulation
1802 Maximum Value at a Given Index in a Bounded Array Medium
MathBinary SearchGreedy
1803 Count Pairs With XOR in a Range Hard
ArrayBit ManipulationTrie
1804 Implement Trie II (Prefix Tree) Unknown
Hash TableStringDesign
1805 Number of Different Integers in a String Easy
Hash TableString
1806 Minimum Number of Operations to Reinitialize a Permutation Medium
ArrayMathSimulation
1807 Evaluate the Bracket Pairs of a String Medium
ArrayHash TableString
1808 Maximize Number of Nice Divisors Hard
MathRecursionNumber Theory
1809 Ad-Free Sessions Easy
Database
1810 Minimum Path Cost in a Hidden Grid Medium
ArrayDepth-First SearchBreadth-First Search
1811 Find Interview Candidates Medium
Database
1812 Determine Color of a Chessboard Square Easy
MathString
1813 Sentence Similarity III Medium
ArrayTwo PointersString
1814 Count Nice Pairs in an Array Medium
ArrayHash TableMath
Showing 1801-1815 of 3602
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public class MyFirstJavaProgram { Edit & Run

   /* This is my first java program.
    * This will print 'Hello, World!' as the output
    */

   public static void main(String []args) {
      System.out.println("Hello, World!"); // prints
   }
}

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