Iterator Coding Problems

Design custom iterators

9
Total Problems
1
Easy
8
Medium
0
Hard
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Master DSA Topics - January, 2026

Practice problems across 75+ categories

Iterator Coding Problems

Practice problems frequently asked at Iterator 9 problems | 1 Easy | 8 Medium | 0 Hard

# Problem Difficulty Topics
1 Binary Search Tree Iterator Medium
StackTreeDesign
2 Binary Search Tree Iterator II Medium
StackTreeDesign
3 Design Compressed String Iterator Easy
ArrayStringDesign
4 Flatten 2D Vector Medium
ArrayTwo PointersDesign
5 Flatten Nested List Iterator Medium
StackTreeDepth-First Search
6 Iterator for Combination Medium
StringBacktrackingDesign
7 Peeking Iterator Medium
ArrayDesignIterator
8 RLE Iterator Medium
ArrayDesignCounting
9 Zigzag Iterator Medium
ArrayDesignQueue
Showing 1-9 of 9

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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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