Counting Coding Problems

Count occurrences and frequencies

166
Total Problems
58
Easy
87
Medium
20
Hard
Start Practicing
1358

Master DSA Topics - January, 2026

Practice problems across 75+ categories

Counting Coding Problems

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

# Problem Difficulty Topics
106 Minimum Number of Steps to Make Two Strings Anagram Medium
Hash TableStringCounting
107 Minimum Number of Steps to Make Two Strings Anagram II Medium
Hash TableStringCounting
108 Minimum Operations to Make Character Frequencies Equal Hard
Hash TableStringDynamic Programming
109 Minimum Operations to Write the Letter Y on a Grid Medium
ArrayHash TableMatrix
110 Minimum Rounds to Complete All Tasks Medium
ArrayHash TableGreedy
111 Minimum Substring Partition of Equal Character Frequency Medium
Hash TableStringDynamic Programming
112 Minimum Total Cost to Make Arrays Unequal Hard
ArrayHash TableGreedy
113 Most Common Word Easy
ArrayHash TableString
114 Most Frequent Even Element Easy
ArrayHash TableCounting
115 Most Frequent Number Following Key In an Array Easy
ArrayHash TableCounting
116 Most Frequent Prime Medium
ArrayHash TableMath
117 Next Greater Numerically Balanced Number Medium
Hash TableMathBacktracking
118 Number of Beautiful Pairs Easy
ArrayHash TableMath
119 Number of Different Subsequences GCDs Hard
ArrayMathCounting
120 Number of Divisible Substrings Medium
Hash TableStringCounting
Showing 106-120 of 166
1 ... 6 7 8 9 10 ... 12

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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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