Array Coding Problems

Master array manipulation and traversal techniques

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

Master DSA Topics - January, 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
136 Check if DFS Strings Are Palindromes Hard
ArrayHash TableString
137 Check if Every Row and Column Contains All Numbers Easy
ArrayHash TableMatrix
138 Check if Grid can be Cut into Sections Medium
ArraySorting
139 Check if Grid Satisfies Conditions Easy
ArrayMatrix
140 Check If It Is a Good Array Hard
ArrayMathNumber Theory
141 Check If It Is a Straight Line Easy
ArrayMathGeometry
142 Check if it is Possible to Split Array Medium
ArrayDynamic ProgrammingGreedy
143 Check if Matrix Is X-Matrix Easy
ArrayMatrix
144 Check if Move is Legal Medium
ArrayMatrixEnumeration
145 Check If N and Its Double Exist Easy
ArrayHash TableTwo Pointers
146 Check If String Is a Prefix of Array Easy
ArrayTwo PointersString
147 Check if the Rectangle Corner Is Reachable Hard
ArrayMathDepth-First Search
148 Check if There is a Path With Equal Number of 0's And 1's Medium
ArrayDynamic ProgrammingMatrix
149 Check if There Is a Valid Parentheses String Path Hard
ArrayDynamic ProgrammingMatrix
150 Check if There is a Valid Partition For The Array Medium
ArrayDynamic Programming
Showing 136-150 of 1947
1 ... 8 9 10 11 12 ... 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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