Solution Review: Missing Number
We solved the problem using lookup (hashtable), using the mathematical formula. Let's solve this more efficiently using bit-level operations with XOR and then optimize the solution.
Arrays Course
29 PostsSolution Review: Single Number
Single Number coding question, can be easily solved with XOR bitwise technique with linear time complexity.
Challenge 1: Single Number
In this lesson, every element appears twice except one element. We solve this using naive, and then we move to solve it more optimally using XOR operator.
Find Odd Occurring Element
In this coding question, we find the odd-appearing element using bitwise xor. This algorithm is simple yet powerful.
How to reverse the letters in a string in Java
In this article, we'll learn various ways to reverse strings in Java. An algorithmic approach with a flow chart and steps. Using java API methods to solve this problem and rotate kth elements or characters in an array.
Subsets Or Powerset
In subsets or powerset problem, we need to write a program that finds all possible subsets (the power set) of a given input. The solution set must not contain duplicate elements.
Array Insertions And Shifting Algorithm
In this lesson, you will learn about an array of insertion and shifting algorithms with illustrations and code examples.
Leetcode 896: Monotonic Array
An array is called monotonic if the index of each element increases from the first to the last or decreases from the first to the last.
Find The Missing Number From The Array
In this article, we'll learn various ways to find the missing number in an array. We use a memoization approach, a mathematical approach, and the most optimized way using the XOR operator.