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
961 N-Repeated Element in Size 2N Array Easy
ArrayHash Table
962 Maximum Width Ramp Medium
ArrayTwo PointersStack
963 Minimum Area Rectangle II Medium
ArrayHash TableMath
964 Least Operators to Express Number Hard
MathDynamic ProgrammingMemoization
965 Univalued Binary Tree Easy
TreeDepth-First SearchBreadth-First Search
966 Vowel Spellchecker Medium
ArrayHash TableString
967 Numbers With Same Consecutive Differences Medium
BacktrackingBreadth-First Search
968 Binary Tree Cameras Hard
Dynamic ProgrammingTreeDepth-First Search
969 Pancake Sorting Medium
ArrayTwo PointersGreedy
970 Powerful Integers Medium
Hash TableMathEnumeration
971 Flip Binary Tree To Match Preorder Traversal Medium
TreeDepth-First SearchBinary Tree
972 Equal Rational Numbers Hard
MathString
973 K Closest Points to Origin Medium
ArrayMathDivide and Conquer
974 Subarray Sums Divisible by K Medium
ArrayHash TablePrefix Sum
975 Odd Even Jump Hard
ArrayDynamic ProgrammingStack
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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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