Master DSA Topics - April, 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
481 Construct String with Minimum Cost (Easy) Unknown
StringTrieDynamic Programming
482 Construct String With Repeat Limit Medium
Hash TableStringGreedy
483 Construct Target Array With Multiple Sums Hard
ArrayHeap (Priority Queue)
484 Construct the Lexicographically Largest Valid Sequence Medium
ArrayBacktracking
485 Construct the Longest New String Medium
MathDynamic ProgrammingGreedy
486 Construct the Minimum Bitwise Array I Easy
ArrayBit Manipulation
487 Construct the Minimum Bitwise Array II Medium
ArrayBit Manipulation
488 Construct the Rectangle Easy
Math
489 Constructing Two Increasing Arrays Hard
ArrayDynamic Programming
490 Contain Virus Hard
ArrayDepth-First SearchBreadth-First Search
491 Container With Most Water Medium
ArrayTwo PointersGreedy
492 Contains Duplicate Easy
ArrayHash TableSorting
493 Contains Duplicate II Easy
ArrayHash TableSliding Window
494 Contains Duplicate III Hard
ArraySliding WindowSorting
495 Contiguous Array Medium
ArrayHash TablePrefix Sum
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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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