merge sort

Merge k Sorted Lists

Merge k Sorted Lists requires efficiently combining multiple sorted linked lists into one using pointers and priority qu…

Sort List

Sort List requires sorting a singly linked list efficiently using pointer manipulation and merge sort for optimal perfor…

Count of Smaller Numbers After Self

Solve the Count of Smaller Numbers After Self problem using binary search and optimized algorithms.

Count of Range Sum

Count the number of subarray sums within a given inclusive range using optimized divide-and-conquer techniques efficient…

Reverse Pairs

Count the number of reverse pairs in a given integer array using efficient algorithms like binary search and merge sort.

Sort an Array

Sort an array using an optimal algorithm, focusing on time and space complexity considerations.

Create Sorted Array through Instructions

The problem asks to compute the cost of inserting elements into a sorted array using a series of instructions.

Count Good Triplets in an Array

Count Good Triplets in an Array requires tracking index orders across two permutations efficiently using binary search.

Number of Pairs Satisfying Inequality

Count pairs in two arrays satisfying a given inequality condition using binary search over the valid answer space.