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
976 Find a Good Subset of the Matrix Hard
ArrayHash TableBit Manipulation
977 Find a Peak Element II Medium
ArrayBinary SearchMatrix
978 Find a Safe Walk Through a Grid Medium
ArrayBreadth-First SearchGraph
979 Find a Value of a Mysterious Function Closest to Target Hard
ArrayBinary SearchBit Manipulation
980 Find Active Users Medium
Database
981 Find All Anagrams in a String Medium
Hash TableStringSliding Window
982 Find All Duplicates in an Array Medium
ArrayHash TableSorting
983 Find All Good Indices Medium
ArrayDynamic ProgrammingPrefix Sum
984 Find All Good Strings Hard
StringDynamic ProgrammingString Matching
985 Find All Groups of Farmland Medium
ArrayDepth-First SearchBreadth-First Search
986 Find All K-Distant Indices in an Array Easy
ArrayTwo Pointers
987 Find All Lonely Numbers in the Array Medium
ArrayHash TableCounting
988 Find All Numbers Disappeared in an Array Easy
ArrayHash Table
989 Find All People With Secret Hard
Depth-First SearchBreadth-First SearchUnion Find
990 Find All Possible Recipes from Given Supplies Medium
ArrayHash TableString
Showing 976-990 of 3600
1 ... 64 65 66 67 68 ... 240

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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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