CODE RUSH

Sign in
C
PracticeProblemsDSASystem DesignInterviewProgress
CODE RUSH

Master the Code.
Build the Career.

A focused engineering practice platform for DSA, algorithms, system design and technical interviews.

Start Practicing
YOUR JOURNEY

Practice. Track. Improve.

Your Code Rush progress will be stored locally on this device.

Solved

0

Attempted

0

Current Streak

0

Accuracy

0%

MASTER THE PATTERNS

DSA Categories

Build pattern recognition instead of memorizing isolated solutions.

▦

Arrays

Traversal, prefix sums, intervals and array patterns.

Practice

Aa

Strings

Manipulation, matching, parsing and string algorithms.

Practice

#

Hashing

Frequency maps, lookup optimization and sets.

Practice

⇆

Two Pointers

Solve array and string problems with coordinated pointers.

Practice

▣

Sliding Window

Master dynamic windows and contiguous subarrays.

Practice

⌕

Binary Search

Search spaces, monotonic predicates and answer search.

Practice

→

Linked List

Pointers, cycles, reversal and list transformations.

Practice

▤

Stack

Monotonic stacks, expression processing and simulation.

Practice
START HERE

Featured Problems

A curated starting set for your engineering practice.

#7

Find Minimum in Rotated Sorted Array

Medium
Binary Search
Modified Binary Search
Solve

#9

3Sum

Medium
Two Pointers
Sort + Two Pointers
Solve

#11

Longest Substring Without Repeating Characters

Medium
Sliding Window
Variable Sliding Window
Solve

#12

Longest Repeating Character Replacement

Medium
Sliding Window
Frequency Window
Solve

#13

Minimum Window Substring

Hard
Sliding Window
Variable Sliding Window
Solve

#16

Valid Palindrome

Easy
Two Pointers
Two Pointers
Solve