Programming Tutorials

Majority Element in Array | Find the Majority Element that occurs more than N/2 Times

Permutation in String LeetCode | Permutation in String Java | LeetCode 567

Open Closed Principle | Code Example | SOLID Principles

Reverse a String - Java Code with Explanation

Implement LRU Cache | Implement LRU Cache using HashMap & Doubly Linked List | Programming Tutorials

Insert Delete GetRandom O(1) | LeetCode 380 | Programming Tutorials

Search in Rotated Sorted Array II | Search in Rotated Sorted Array with Duplicates

Triplet Sum in Array | Find a Triplet with the Given Sum in an Array | Programming Tutorials

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Sliding Window Maximum | LeetCode | Priority Queue | Deque | Java Code

Search in Rotated Sorted Array | Search an Element in a Sorted and Rotated Array

Convert Integer to Roman Numeral | Integer to Roman LeetCode | Programming Tutorials

Binary Tree Preorder Traversal (Iterative & Recursive Approach) | Programming Tutorials

Print Prime Numbers from 1 to N using Sieve Algorithm : Java Code

Remove Duplicates from Sorted Array In-Place (without using extra space)

Find the Difference | LeetCode 389 | Explained 3 Approaches

Find Middle Element of a Linked List : Java Code

Palindrome Number Program in C : Check Whether a Number is Palindrome or Not

Merge Overlapping Intervals | Merge Intervals | Java | InterviewBit Solution

Validate Binary Search Tree | Check If a Binary Tree is BST or Not | Java

First Unique Number (LeetCode 30 Day Challenge) | Programming Tutorials

Find First and Last Position of Element in Sorted Array | Programming Tutorials

Find Duplicate Characters in a String : Java Code

Java Program to Find the Second Highest Number in an Array

Reverse Words in a String | LeetCode 151 | Reverse String Word by Word | Multiple Approaches

Implement a Stack using Array - Java Code with Explanation

Find First and Last index of a Number in an Array - Java Code

Find Second Largest Number in an Array (Multiple Approaches)

Cyclically Rotate an Array by One | Right Rotate an Array by One Index | Java

C, C++ Program to Find Largest of three Numbers

Find Maximum and Minimum Value in Array - Java Code

Find Second Smallest Number in Array without Sorting | Java

Two Sum Problem Java Code | Two Sum LeetCode | Find Pair in Array with Given Sum

Rotate an Array by K Steps (In-Place) |Rotate an Array to the Right by K Steps

How to Create Immutable Class in Java | Immutable Classes & Objects

Find All Duplicates in an Array without using any Extra Space | LeetCode 442

Reverse a Linked List (Iterative Approach) | Programming Tutorials

C Program to Insert an Element in an Array

Reverse an Array in Groups of Given Size

Monotonic Array | Check If Given Array is Monotonic | Programming Tutorials

Next Greater Element using Stack | Next Greater in Array | Programming Tutorials

Horizontal vs Vertical Scaling | System Design | Programming Tutorials

Longest Substring with K Unique Characters | Programming Tutorials

Segregate 0s and 1s in an Array - Java and C Code Examples

Find Smallest and Largest Number in Array - Java

Singleton Design Pattern | Java | Multiple Examples

Shortest Unsorted Continuous Subarray | Java Code | Programming Tutorials

Wrapper Classes in Java | Primitive Data Types | Autoboxing and Unboxing - Java Code

Liskov Substitution Principle | SOLID Principles | Multiple Code Examples

Longest Substring with At Most K Distinct Characters | Programming Tutorials

Doubly Linked List | Singly Vs Doubly Linked List | Time Complexity