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Java program with a LinkedList implementation using various operations on doubly linked list nodes.

Using a linked list to perform insertions, deletions, and additions based on user input.

Reading intervals, sorting them by start, merging overlapping intervals, and printing the count.

Managing arrays with additions and queries, utilizing streams and binary search for efficiency.

This Java program reads an integer n and an array of n integers. For each integer, it calculates and

Java program finds longest non-repeating subsequence length using sliding window and HashMap.

Java program checks if array 'a' is a subsequence of 'b', outputs "Yes" or "No."

Java program takes two arrays, finds pairs with sum equal to x, and outputs indices.

Java program calculates prefix sum matrix with difference array optimization for efficient updates.