The Image Flood Fill Algorithm (C++)
An image is represented by a 2-D array of integers, each integer representing the pixel value of the image (from 0 to 65535). Given a coordinate (sr, sc) representing …
Category: algorithms
How to Clone a Graph in C++/Java using Depth First Search Algorithm? (Graph and HashMap)
March 18, 2019
algorithms, c / c++, coding exercise, data structure, DFS, java, recursive
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Given a reference of a node in a connected undirected graph, return a deep copy (clone) of the graph. Each node in the graph contains a val (int) and …
The Algorithm to Find Anagram Mappings between Two Arrays
Given two lists Aand B, and B is an anagram of A. B is an anagram of A means B is made by randomizing the order of the elements …
How to Construct Binary Search Tree from Preorder Traversal? (C++ and Java)
Return the root node of a binary search tree that matches the given preorder traversal. (Recall that a binary search tree is a binary tree where for every node, …
The Intersection Algorithm of Two Arrays using Hash Maps in C++/Java/JavaScript
Given two arrays, write a function to compute their intersection. Example 1: Input: nums1 = , nums2 = Output: Example 2: Input: nums1 = , nums2 = Output: Note: …