Array Coding Problems

Master array manipulation and traversal techniques

1947
Total Problems
398
Easy
1049
Medium
497
Hard
Start Practicing
0123

Master DSA Topics - April, 2026

Practice problems across 75+ categories

Array Coding Problems

Practice problems frequently asked at Array 1947 problems | 398 Easy | 1049 Medium | 497 Hard

# Problem Difficulty Topics
826 Longest Non-decreasing Subarray From Two Arrays Medium
ArrayDynamic Programming
827 Longest Palindrome by Concatenating Two Letter Words Medium
ArrayHash TableString
828 Longest Path With Different Adjacent Characters Hard
ArrayStringTree
829 Longest Special Path Hard
ArrayHash TableTree
830 Longest Special Path II Hard
ArrayHash TableTree
831 Longest Square Streak in an Array Medium
ArrayHash TableBinary Search
832 Longest Strictly Increasing or Strictly Decreasing Subarray Easy
Array
833 Longest String Chain Medium
ArrayHash TableTwo Pointers
834 Longest Subarray of 1's After Deleting One Element Medium
ArrayDynamic ProgrammingSliding Window
835 Longest Subarray With Maximum Bitwise AND Medium
ArrayBit ManipulationBrainteaser
836 Longest Subsequence With Decreasing Adjacent Difference Medium
ArrayDynamic Programming
837 Longest Subsequence With Limited Sum Easy
ArrayBinary SearchGreedy
838 Longest Substring of One Repeating Character Hard
ArrayStringSegment Tree
839 Longest Turbulent Subarray Medium
ArrayDynamic ProgrammingSliding Window
840 Longest Uncommon Subsequence II Medium
ArrayHash TableTwo Pointers
Showing 826-840 of 1947
1 ... 54 55 56 57 58 ... 130

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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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