Placement-grade DSA · Zero lectures

MASTER DSA IN JAVA_
THE SYSTEMATIC WAY

Read the guide, implement it from scratch, then solve an ordered ladder. Your streak, review queue and contribution grid keep you honest — every single day.

Launch tracker Create free account

557

problems

19

units

3

platforms

Ordered ladders

Every topic is a strict basic-to-advanced ladder. No random problem dumps — each problem builds on the last.

Review queue

Flag the problems that hurt. Your weekly review queue makes sure you re-solve them until they stick.

Contribution grid

Tick a problem and your GitHub-style heatmap lights up. Watch your consistency turn into a wall of green.

Cloud sync

Sign in and your progress follows you to any device. Solve on the desktop, review on the phone.

HOW IT WORKS_

1

Read the guide

Every ladder links the exact guide you need. No lectures — you teach yourself from the source.

2

Implement from scratch

Before solving, you build the data structure yourself. That's where the knowledge sticks.

3

Solve & tick

Work the ladder in order and tick problems off. The tracker keeps your streak and review queue alive.

THE CURRICULUM_

19 units in a strict order. Finish one, the next is waiting.

01Arrays02Strings03ArrayList04Hashing05LinkedList06Stacks07Queues + Deque08Recursion09Backtracking10Binary Trees11BST12Heaps / PriorityQueue13Graphs14Sorting15Binary Search16Greedy17Dynamic Programming18Bit Manipulation19Trie

YOUR GRIND STARTS NOW_

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