Amazon Coding Problems

Practice Amazon's top coding challenges and algorithms

3399
Total Problems
851
Easy
1772
Medium
756
Hard
Start Practicing

Master DSA Topics - January, 2026

Practice problems across 75+ categories

Amazon Coding Problems

Practice problems frequently asked at Amazon 3399 problems | 851 Easy | 1772 Medium | 756 Hard

# Problem Difficulty Topics
2446 Number of Subarrays with Bounded Maximum Medium
ArrayTwo Pointers
2447 Number of Subarrays With GCD Equal to K Medium
ArrayMathNumber Theory
2448 Number of Subarrays With LCM Equal to K Medium
ArrayMathNumber Theory
2449 Number of Submatrices That Sum to Target Hard
ArrayHash TableMatrix
2450 Number of Subsequences That Satisfy the Given Sum Condition Medium
ArrayTwo PointersBinary Search
2451 Number of Subsequences with Odd Sum Medium
ArrayMathDynamic Programming
2452 Number of Substrings Containing All Three Characters Medium
Hash TableStringSliding Window
2453 Number of Substrings With Fixed Ratio Medium
Hash TableMathString
2454 Number of Substrings With Only 1s Medium
MathString
2455 Number of Times a Driver Was a Passenger Medium
Database
2456 Number of Times Binary String Is Prefix-Aligned Medium
Array
2457 Number of Transactions per Visit Hard
Database
2458 Number of Trusted Contacts of a Customer Medium
Database
2459 Number of Unequal Triplets in Array Easy
ArrayHash TableSorting
2460 Number of Unique Categories Medium
Union FindInteractiveCounting
Showing 2446-2460 of 3399
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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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