frequency array

Articles about frequency array

1. Article · Data Structures and Algorithms (DSA)

   Subsets with MEX in Range

   Learn how to count array subsets whose MEX falls within a given range using frequencies, powers of two, and modular arithmetic in Java.

   Sandhiya PriyaOct 302,1501,000
2. Article · Java

   Count Pairs in an Array Whose Sum Is Divisible by K

   Learn how to count array pairs whose sum is divisible by K in Java using remainders and a frequency array in O(n) time.

   Sandhiya PriyaJul 93,221
3. Article · Data Structures and Algorithms (DSA)

   Stream First Non-Repeating Character

   Solve the streaming first non-repeating character problem using a queue and frequency array. Learn the algorithm, Java code, complexity, and key takeaways for interviews.

   Sandhiya PriyaMay 44561,000