Author: SJ

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Hamming Distance between two given integers

Objective: Given two integers, write an algorithm to calculate the hamming distance between the integers.  Hamming Distance: Hamming distance between two integers is the number of positions at which the bits are different. Example:...

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Breadth-First Search (BFS) in 2D Matrix/2D-Array

Objective: Given a two-dimensional array or matrix, Do the breadth-First Search (BFS) to print the elements of the given matrix. Implement a Breadth-first traversal in an iterative manner. Example: int [][] grid = new...

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Check the completeness of given binary tree | Set 1 – Using Node Count

Objective: Given a binary tree, write an algorithm to determine whether the tree is complete or not.  Complete Binary Tree: A binary tree T with n levels is complete if all levels except possibly...

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Check if given undirected graph is connected or not

Objective: Given an undirected graph, write an algorithm to find out whether the graph is connected or not.  Graph Connectivity: If each vertex of a graph is connected to one or multiple vertices then...

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Check if Graph is Bipartite – Adjacency List using Depth-First Search(DFS)

Objective: Given a graph represented by the adjacency List, write a Depth-First Search(DFS) algorithm to check whether the graph is bipartite or not. Earlier we have solved the same problem using Adjacency Matrix (Check...

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Print boundary of given matrix/2D array.

Objective: Given a two-dimensional array, write a program to print the boundary of the array. Example: int [][] grid = new int[][] { {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 8, 7,...

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Collatz Conjecture – Maximum Steps takes to transform (1, N) to 1.

Objective: Given a number N, write an algorithm to find the maximum number of steps it takes to transform (1, N) to 1 using Collatz Conjecture.  The Collatz conjecture is a conjecture in mathematics...

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Print Stack in reverse order.

Objective: Given a stack, write a program to print the stack elements in reverse order. Example: Approach: Use Temporary stack: Take temporary stack, and copy all the items from the given stack to a...

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