Longest Common Subsequence Solution
The longest common subsequence (LCS) problem is the problem of finding the longest subsequence common to given two sequences.
Author: Logan
Longest Increasing Subsequence Solution (LIS) – LeetCode Solution [Medium]
Given an integer array arr, return the length of the longest strictly increasing subsequence. Strictly increasing sequence is a sequence such that all elements of the sequence are sorted in increasing order.
Find the Maximum Subarray and its Sum [Kadane’s Algorithm]
Find the maximum subarray and its sum is a problem of finding contiguous subarray with largest sum in an array of integers.
Strassen’s Algorithm for Matrix Multiplication
Strassen’s Algorithm for Matrix multiplication is a recursive algorithm for multiplying n x n matrices. Strassen’s algorithm is based on a familiar design technique – Divide & Conquer.
Binary Search Tree in C/C++ [2]
In the last post we learnt about Binary Search Trees and basic operations like insert and search on them. In this post we’ll learn about some complex operations on them.
Binary Search Tree in C/C++
Binary search tree (BST) is a kind of Binary tree that satisfies the following property for every node x: Let x be a node in a binary search tree.
Find the minimum distance to travel through a road having hills [Interview Question]
Logan has to travel through a road having hills of different heights. Also each hill has a cave to pass through it, to avoid travelling extra distance of a hill. Logan wants to travel through this road by taking at most K caves.
Edit Distance – LeetCode Solution [Hard]
Given two strings word1 and word2 (in lowercase alphabets), return the minimum number of operations required to convert word1 to word2.
How to find if a Tree is a subtree of the given tree in C++
Given the roots of two binary trees root and rootSub, check if there is a subtree of root with the same structure and node values as rootSub.
A subtree of a tree T is a tree S consisting of a node in T and all of its descendants in T.
How to print ancestors of a node in Binary tree using C++
You’re given a root of a binary tree and a key k. You need to print the ancestors of k in the given binary tree.