sheet
Grind 169
The tool's full question pool in its priority order. The tool builds a 75-question plan by default and grows towards all 169 when you give it more weeks or hours.
- 169 problems
- 40 easy · 103 medium · 26 hard
- in the source's priority order
- 12 Premium on LeetCode (free here, with our own judge)
source: techinterviewhandbook.org ↗ · read on 2026-10-13
08 · Recursion
0 / 2 solved- not solved yet24Medium
- not solved yet50Medium
09 · Math & Number Theory
0 / 3 solved- not solved yet528Medium
- not solved yet7Medium
- not solved yet9Easy
10 · Arrays & Strings
0 / 10 solved- not solved yet121Easy
- not solved yet242Easy
- not solved yet53Medium
- not solved yet238Medium
- not solved yet169Easy
- not solved yet31Medium
- not solved yet49Medium
- not solved yet189Medium
- not solved yet14Easy
- not solved yet41Hard
11 · Matrices & Simulation
0 / 3 solved- not solved yet54Medium
- not solved yet48Medium
- not solved yet73Medium
12 · Two Pointers
0 / 8 solved- not solved yet125Easy
- not solved yet15Medium
- not solved yet42Hard
- not solved yet75Medium
- not solved yet11Medium
- not solved yet283Easy
- not solved yet977Easy
- not solved yet16Medium
13 · Sliding Window
0 / 4 solved- not solved yet3Medium
- not solved yet76Hard
- not solved yet438Medium
- not solved yet424Medium
14 · Hashing & Prefix Sums
0 / 8 solved- not solved yet1Easy
- not solved yet383Easy
- not solved yet409Easy
- not solved yet217Easy
- not solved yet36Medium
- not solved yet128Medium
- not solved yet525Medium
- not solved yet560Medium
15 · Linked Lists
0 / 13 solved- not solved yet21Easy
- not solved yet141Easy
- not solved yet206Easy
- not solved yet876Easy
- not solved yet146Medium
- not solved yet19Medium
- not solved yet287Medium
- not solved yet328Medium
- not solved yet2Medium
- not solved yet234Easy
- not solved yet143Medium
- not solved yet61Medium
- not solved yet25Hard
16 · Stacks & Monotonic Stack
0 / 9 solved- not solved yet20Easy
- not solved yet150Medium
- not solved yet155Medium
- not solved yet84Hard
- not solved yet739Medium
- not solved yet844Easy
- not solved yet394Medium
- not solved yet735Medium
- not solved yet32Hard
17 · Queues & Deques
0 / 3 solved- not solved yet232Easy
- not solved yet362Design Hit CounterpremiumMedium
- not solved yet239Hard
18 · Binary Search
0 / 7 solved- not solved yet704Easy
- not solved yet278Easy
- not solved yet33Medium
- not solved yet658Medium
- not solved yet4Hard
- not solved yet74Medium
- not solved yet153Medium
19 · Sorting
0 / 2 solved- not solved yet148Medium
- not solved yet179Medium
20 · String Parsing & Expression Evaluation
0 / 5 solved- not solved yet8Medium
- not solved yet224Hard
- not solved yet13Easy
- not solved yet271Encode and Decode StringspremiumMedium
- not solved yet227Medium
21 · Tree Traversals
0 / 6 solved- not solved yet102Medium
- not solved yet297Hard
- not solved yet199Medium
- not solved yet662Medium
- not solved yet103Medium
- not solved yet863Medium
22 · Tree Recursion
0 / 12 solved- not solved yet226Easy
- not solved yet110Easy
- not solved yet236Medium
- not solved yet543Easy
- not solved yet104Easy
- not solved yet105Medium
- not solved yet124Hard
- not solved yet113Medium
- not solved yet100Easy
- not solved yet437Medium
- not solved yet101Easy
- not solved yet572Easy
23 · Binary Search Trees
0 / 5 solved- not solved yet235Medium
- not solved yet98Medium
- not solved yet230Medium
- not solved yet285Inorder Successor in BSTpremiumMedium
- not solved yet108Easy
24 · Heaps & Priority Queues
0 / 7 solved- not solved yet973Medium
- not solved yet295Hard
- not solved yet23Hard
- not solved yet621Medium
- not solved yet692Medium
- not solved yet215Medium
- not solved yet632Hard
25 · Tries
0 / 4 solved- not solved yet208Medium
- not solved yet211Medium
- not solved yet212Hard
- not solved yet336Hard
26 · Graphs: BFS & DFS
0 / 9 solved- not solved yet733Easy
- not solved yet542Medium
- not solved yet133Medium
- not solved yet200Medium
- not solved yet994Medium
- not solved yet127Hard
- not solved yet417Medium
- not solved yet1730Shortest Path to Get FoodpremiumMedium
- not solved yet1197Minimum Knight MovespremiumMedium
27 · Shortest Paths
0 / 1 solved- not solved yet787Medium
28 · Union-Find & Minimum Spanning Trees
0 / 3 solved- not solved yet721Medium
- not solved yet261Graph Valid TreepremiumMedium
- not solved yet323Medium
29 · Topological Sort
0 / 5 solved- not solved yet207Medium
- not solved yet310Medium
- not solved yet210Medium
- not solved yet329Hard
- not solved yet269Alien DictionarypremiumHard
30 · Advanced Graphs: Euler Paths, Bridges & SCCs
0 / 1 solved- not solved yet815Hard
31 · Backtracking
0 / 8 solved- not solved yet39Medium
- not solved yet46Medium
- not solved yet78Medium
- not solved yet17Medium
- not solved yet79Medium
- not solved yet22Medium
- not solved yet37Hard
- not solved yet51Hard
32 · Greedy Algorithms
0 / 2 solved- not solved yet134Medium
- not solved yet55Medium
33 · Intervals
0 / 6 solved- not solved yet57Medium
- not solved yet56Medium
- not solved yet252Meeting RoomspremiumEasy
- not solved yet759Employee Free TimepremiumHard
- not solved yet253Meeting Rooms IIpremiumMedium
- not solved yet435Medium
34 · Bit Manipulation
0 / 6 solved- not solved yet67Easy
- not solved yet338Easy
- not solved yet191Easy
- not solved yet136Easy
- not solved yet268Easy
- not solved yet190Easy
35 · Dynamic Programming
0 / 12 solved- not solved yet322Medium
- not solved yet70Easy
- not solved yet139Medium
- not solved yet416Medium
- not solved yet5Medium
- not solved yet62Medium
- not solved yet198Medium
- not solved yet152Medium
- not solved yet300Medium
- not solved yet221Medium
- not solved yet91Medium
- not solved yet377Medium
36 · DP Patterns
0 / 1 solved- not solved yet1235Hard
37 · Design Data Structures
0 / 4 solved- not solved yet981Medium
- not solved yet895Hard
- not solved yet588Design In-Memory File SystempremiumHard
- not solved yet380Medium