•Learn
DSA Tutorials
Data structures, algorithms, and problem-solving patterns for coding interviews. Each tutorial includes code examples, complexity analysis, and common mistakes.
Arrays and Strings
Time complexity, two-pointer technique, common operations.
Read tutorial →
Hash Maps
Lookup tables, frequency counting, anagram patterns.
Read tutorial →
Trees and Graphs
Binary trees, BST, traversals, graph representations.
Read tutorial →
Dynamic Programming
Memoization, tabulation, common DP patterns.
Read tutorial →
Binary Search
Sorted arrays, search space reduction, rotated arrays.
Read tutorial →
Sliding Window
Fixed and variable window, max/min subarray.
Read tutorial →
Two Pointers
Opposite ends, same direction, fast/slow pointer.
Read tutorial →
BFS vs DFS
Graph traversal, shortest path, cycle detection.
Read tutorial →
Stack and Queue
LIFO/FIFO, monotonic stack, next greater element.
Read tutorial →
Sorting Algorithms
Quick sort, merge sort, time complexity comparison.
Read tutorial →
Ready to practice?
Put your knowledge to the test
Start a mock interview with AI interviewer Alex. Get instant hiring signal.
Start a Mock Interview →