## Max of All Subarrays of Size k Using Max Heap in C++

This problem, also referred to as the “sliding window maximum” problem, can be efficiently solved using heaps. We’ve already discussed an O(n) solution.

## Finding All Subsequences of a String Using Python | Iterative vs Recursive

Subsequences derived from strings by deleting some or no characters without changing order, are crucial in fields like bioinformatics, data mining, and cryptography.

## Understanding Linearity of Expectation

Linearity of expectation is a powerful concept in probability theory that simplifies the calculation of expected values in probabilistic experiments.

## Finding the Next Lexicographically Greater Permutation

Given an input sequence in the form of an array, find the lexicographically next greater permutation if it exists.

## Finding Permutations that Form the Sum | Coin Change Permutation

Find the number of permutations to form the target sum using the elements of the given array, with repetition allowed.

## Search a sorted 2D Matrix

This method has the limitation that it will work for only those matrix where the first integer of each row is greater than the last integer of the previous row.

## Nim’s Game | Code Implementation

Nim’s game is played with a set of heaps, each containing a certain number of objects or stones. Two players take turns removing objects from the heaps

## Non-decreasing Subsequences Solution – LeetCode Solution [Medium]

Given an integer array nums, return all the different possible non-decreasing subsequences of the given array with at least two elements.

## Is Subsequence – LeetCode Solution [Easy]

Given two strings s and t, return true if s is a subsequence of t, or false otherwise.

## Coin Change II – LeetCode Solution [Medium]

You are given an integer array coins representing coins and an integer amount. Return the number of combinations that make up that amount.