Master DSA Topics - January, 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
1846 Maximum Deletions on a String Hard
StringDynamic ProgrammingRolling Hash
1847 Maximum Depth of Binary Tree Easy
TreeDepth-First SearchBreadth-First Search
1848 Maximum Depth of N-ary Tree Easy
TreeDepth-First SearchBreadth-First Search
1849 Maximum Difference Between Adjacent Elements in a Circular Array Easy
Array
1850 Maximum Difference Between Even and Odd Frequency I Easy
Hash TableStringCounting
1851 Maximum Difference Between Even and Odd Frequency II Hard
StringSliding WindowEnumeration
1852 Maximum Difference Between Increasing Elements Easy
Array
1853 Maximum Difference Between Node and Ancestor Medium
TreeDepth-First SearchBinary Tree
1854 Maximum Difference by Remapping a Digit Easy
MathGreedy
1855 Maximum Difference Score in a Grid Medium
ArrayDynamic ProgrammingMatrix
1856 Maximum Distance Between a Pair of Values Medium
ArrayTwo PointersBinary Search
1857 Maximum Distance in Arrays Medium
ArrayGreedy
1858 Maximum Earnings From Taxi Medium
ArrayHash TableBinary Search
1859 Maximum Elegance of a K-Length Subsequence Hard
ArrayHash TableStack
1860 Maximum Element After Decreasing and Rearranging Medium
ArrayGreedySorting
Showing 1846-1860 of 3600
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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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