- DSA Problems
Copy List with Random Pointer Algorithm Solution
Complete Java implementation for copying a linked list with random pointers, including hash map and interweaving approaches with time and space complexity analysis.
- DSA Problems
Add Two Numbers Linked List Solution
Complete Java implementation for adding two numbers represented as linked lists with detailed complexity analysis and edge case handling.
- DSA Problems
Reorder List Algorithm Solution
Complete Java implementation for reordering a singly linked list by splitting and interleaving nodes.
- DSA Problems
Remove Nth Node From End of List Java Solution
Complete Java implementation for removing the nth node from the end of a linked list with optimal time and space complexity.
- DSA Problems
Merge Two Sorted Lists Algorithm Solution
Complete Java implementation for merging two sorted linked lists with optimal time and space complexity analysis.
- DSA Problems
Detecting Cycles in Linked Lists Using Floyd's Algorithm
Learn to detect cycles in singly linked lists using the fast-slow pointer technique with O(1) space complexity.
- DSA Problems
Reverse Linked List Algorithm Solutions
Comprehensive Java implementation of reverse linked list with iterative and recursive approaches, including time complexity analysis and practical considerations for FAANG interviews.
- DSA Problems
Corporate Flight Bookings Range Updates Problem
Solution to the corporate flight bookings problem using range update techniques and difference arrays for efficient batch updates.
- DSA Problems
Continuous Subarray Sum Problem Solution
Complete Java implementation for finding continuous subarrays with sum divisible by k, covering optimal approaches and edge cases.
- DSA Problems
Product of Array Except Self Solution
Efficient Java implementation for calculating product of array elements except self with O(1) space complexity
- DSA Problems
Range Sum Query Implementation and Optimization Techniques
Comprehensive guide to range sum query problems with efficient segment tree and prefix sum solutions for dynamic array range sum operations.
- DSA Problems
Subarray Sum Equals K Problem Solution
Complete Java implementation for finding subarrays with sum equal to target k, including optimized approaches and time complexity analysis.
FAANG Data Structures & Algorithms Problems Guide
A curated catalog of concrete data structures and algorithms problems. Use it to plan practice, track coverage, and rehearse solutions with a repeatable approach.