## Front and Back Search in an Array

Objective: Given an unsorted array of numbers and a number ‘x’, write a java program to search the number ‘x’ in the array and return its index else return -1. Example: Int [] a...

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Objective: Given an unsorted array of numbers and a number ‘x’, write a java program to search the number ‘x’ in the array and return its index else return -1. Example: Int [] a...

Objective: Given an array of integers which contains duplicates as well. Write a program to print all unique elements in the array. This problem is also referred as print all distinct elements in the...

Objective: Given a number n and k, Calculate n * k2 without using pow() or *operator. Example: N = 3, k = 4 N*k2 = 48 Approach: Bit Manipulation Left shift the number N...

Objective: Given an array of integers, write an algorithm to find the first two largest elements in the array. Example: Int [] a = { 6, 8, 1, 9, 2, 1, 10}; Output: 10,...

Objective: Given a number n and r, write a program to calculate Logrn Example: N = 32, r =2 Log232= 5 N = 64, r = 4 Log464= 3 Approach: Without using built-In function-...

Objective: Given an array of integers, write a java program to find the sum of all elements Example: Input [] = {20, 30, 40, 10, 5, 2, 60, 73} Output: 240 Approach: Do a...

What is Insertion Sort?? Insertion sort is a simple sorting algorithm that builds the sorted array one item at a time. Efficient for small data sets, not efficient for large data sets. Most of...

Objective: Given a String, write a program to find largest and smallest word in it. Example: Input String: test Smallest Word: test Largest Word: test —————— Input String: This problem is solved at Algorithms...

Objective: Given a number, write a program to find if number is power of two. Example: N = 5 Output: false. N = 8 Output: true (23) N = 512 Output: true (29) Approach:...

Objective: Given an array of integers, write a program to rotate the array in cyclic manner by one. Example: Int a [] = {1, 2, 3, 4, 5} Output: {2, 3, 4, 5, 1}...

Objective: Write a program to print first n numbers in Fibonacci series. Fibonacci number: First two Fibonacci numbers are defined as 0 and 1 and every number after the first two is the sum...

A rectangle is a quadrilateral with four right angles. Say rectangle is given with side’s length A and B Area of Rectangle = A * B Perimeter of rectangle = 2(A+B) Code: Run This Code Output: Area of Rectangle:...

Objective: Given a String, write a java program to reverse the string using Stack Example: Input: “tutorial horizon” Output: “noziroh lairotut” Recommended: Please read Stack Data Structure before continue to read. Approach: Initialize a...

What is Stack?? Stack is an abstract data type (ADT) and very useful in programming. In computer science, a stack is an abstract data type that serves as a collection of elements. Majorly all the operations are done at only one...

In this article we will discuss about what is bubble sort, why it is considered as one of the simplest sorting algorithm, what its complexity, how we can improve the bubble sort algorithm. What...

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