Types of Array

What is an Array?

An array is a collection of items of the same variable type that are stored at contiguous memory locations. It’s one of the most popular and simple data structures and is often used to implement other data structures. Each item in an array is indexed starting with 0 . Each element in an array is accessed through its index....

Need of Array Data Structures

Arrays are a fundamental data structure in computer science. They are used in a wide variety of applications, including:...

Types of Array

There are two main types of arrays:...

Array Operations

Common operations performed on arrays include:...

Applications of Array

Arrays are used in a wide variety of applications, including:...

Learn Basics of Array:

What is Array Introduction to Arrays – Data Structure and Algorithm Tutorials Applications, Advantages and Disadvantages of Array...

Array in Different Language:

Arrays in C/C++ Arrays in Java Arrays in Python Arrays in C# Arrays in Javascript...

Basic Operations on Array:

Searching in Array Write a program to reverse an array Complete Guide On Array Rotations Search, insert and delete in an unsorted array Search, insert and delete in a sorted array Sort an Array Generate all subarrays...

Easy Problems on Array:

Find the largest three elements in an array Find Second largest element in an array Move all zeroes to end of array Rearrange array such that even positioned are greater than odd Rearrange an array in maximum minimum form using Two Pointer Technique Segregate even and odd numbers Reversal algorithm for array rotation Print left rotation of array in O(n) time and O(1) space Sort an array in wave form Sort an array which contain 1 to n values Count the number of possible triangles Print All Distinct Elements of a given integer array Find the element that appears once in Array where every other element appears twice Leaders in an array Find sub-array with given sum...

Medium Problems on Array:

Rearrange an array such that arr[i] = i Rearrange positive and negative numbers in O(n) time and O(1) extra space Reorder an array according to given indexes Search an element in a sorted and rotated array Find the Rotation Count in Rotated Sorted array K-th Largest Sum Contiguous Subarray Find the smallest missing number Difference Array | Range update query in O(1) Maximum profit by buying and selling a share at most twice Smallest subarray with sum greater than a given value Inversion count in Array using Merge Sort Sort an array of 0s, 1s and 2s Merge two sorted arrays with O(1) extra space Majority Element Two Pointers Technique Find a peak element Find a triplet that sum to a given value Minimum increment by k operations to make all elements equal Equilibrium index of an array...

Hard Problems on Array:

Find k numbers with most occurrences in the given array MO’s Algorithm Square Root (Sqrt) Decomposition Algorithm Sparse Table Range sum query using Sparse Table Range Minimum Query (Square Root Decomposition and Sparse Table) Range LCM Queries Merge Sort Tree for Range Order Statistics Minimum number of jumps to reach end Space optimization using bit manipulations Sort a nearly sorted (or K sorted) array Find maximum value of Sum( i*arr[i]) with only rotations on given array allowed Median in a stream of integers (running integers) Construct an array from its pair-sum array Maximum equlibrium sum in an array Smallest Difference Triplet from Three arrays Find all triplets with zero sum...