Counting Coding Practice Problems - Page 4 | TutorialsPoint

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Master DSA Topics - January, 2026

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Counting Coding Problems

Practice problems frequently asked at Counting • 166 problems | 58 Easy | 87 Medium | 20 Hard

#	Problem	Difficulty	Topics
46	Equal Sum Arrays With Minimum Number of Operations	Medium	ArrayHash TableGreedy
47	Find All Lonely Numbers in the Array	Medium	ArrayHash TableCounting
48	Find Consecutive Integers from a Data Stream	Medium	Hash TableDesignQueue
49	Find Longest Special Substring That Occurs Thrice I	Medium	Hash TableStringBinary Search
50	Find Longest Special Substring That Occurs Thrice II	Medium	Hash TableStringBinary Search
51	Find Lucky Integer in an Array	Easy	ArrayHash TableCounting
52	Find Most Frequent Vowel and Consonant	Easy	Hash TableStringCounting
53	Find Players With Zero or One Losses	Medium	ArrayHash TableSorting
54	Find Smallest Common Element in All Rows	Medium	ArrayHash TableBinary Search
55	Find the Most Common Response	Medium	ArrayHash TableString
56	Find the Number of Winning Players	Easy	ArrayHash TableCounting
57	Find Valid Pair of Adjacent Digits in String	Easy	Hash TableStringCounting
58	Find Words That Can Be Formed by Characters	Easy	ArrayHash TableString
59	First Letter to Appear Twice	Easy	Hash TableStringBit Manipulation
60	First Unique Character in a String	Easy	Hash TableStringQueue

Showing 46-60 of 166

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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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