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
601 Count the Number of K-Big Indices Hard
ArrayBinary SearchDivide and Conquer
602 Count the Number of K-Free Subsets Medium
ArrayMathDynamic Programming
603 Count the Number of Powerful Integers Hard
MathStringDynamic Programming
604 Count the Number of Special Characters I Easy
Hash TableString
605 Count the Number of Special Characters II Medium
Hash TableString
606 Count the Number of Square-Free Subsets Medium
ArrayMathDynamic Programming
607 Count the Number of Substrings With Dominant Ones Medium
StringEnumeration
608 Count the Number of Vowel Strings in Range Easy
ArrayStringCounting
609 Count The Number of Winning Sequences Hard
StringDynamic Programming
610 Count The Repetitions Hard
StringDynamic Programming
611 Count Total Number of Colored Cells Medium
Math
612 Count Triplets That Can Form Two Arrays of Equal XOR Medium
ArrayHash TableMath
613 Count Triplets with Even XOR Set Bits I Easy
ArrayBit Manipulation
614 Count Triplets with Even XOR Set Bits II Medium
ArrayBit Manipulation
615 Count Unguarded Cells in the Grid Medium
ArrayMatrixSimulation
Showing 601-615 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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