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
316 Check if All A's Appears Before All B's Easy
String
317 Check if All Characters Have Equal Number of Occurrences Easy
Hash TableStringCounting
318 Check if All the Integers in a Range Are Covered Easy
ArrayHash TablePrefix Sum
319 Check if an Array Is Consecutive Easy
ArrayHash TableSorting
320 Check if an Original String Exists Given Two Encoded Strings Hard
StringDynamic Programming
321 Check if Any Element Has Prime Frequency Easy
ArrayHash TableMath
322 Check if Array is Good Easy
ArrayHash TableSorting
323 Check if Array Is Sorted and Rotated Easy
Array
324 Check If Array Pairs Are Divisible by k Medium
ArrayHash TableCounting
325 Check if Binary String Has at Most One Segment of Ones Easy
String
326 Check if Bitwise OR Has Trailing Zeros Easy
ArrayBit Manipulation
327 Check if DFS Strings Are Palindromes Hard
ArrayHash TableString
328 Check If Digits Are Equal in String After Operations I Easy
MathStringSimulation
329 Check If Digits Are Equal in String After Operations II Hard
MathStringCombinatorics
330 Check if Every Row and Column Contains All Numbers Easy
ArrayHash TableMatrix
Showing 316-330 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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