Toolliyo Practice

Problems explorer

Browse by topic · auto-judge · company sheets · roadmaps — not just a problem dump.

420 problems in this topic

# Title Topics Acceptance Pts Difficulty
51 Edit Distance — 40 Hard Solve
52 Encode and Decode Strings — 30 Medium Solve
53 Happy Number — 20 Easy Solve
54 Insert Interval — 30 Medium Solve
55 LRU Cache — 30 Medium Solve
56 Linked List Cycle — 20 Easy Solve
57 Permutations — 30 Medium Solve
58 Subsets — 30 Medium Solve
59 Valid Anagram — 20 Easy Solve
60 Word Search II — 40 Hard Solve
61 Best Time to Buy and Sell Stock — 20 Easy Solve
62 Burst Balloons — 40 Hard Solve
63 Coin Change — 30 Medium Solve
64 Counting Bits — 20 Easy Solve
65 Diameter of Binary Tree — 20 Easy Solve
66 Find Median from Data Stream — 40 Hard Solve
67 Hand of Straights — 30 Medium Solve
68 Letter Combinations of a Phone Number — 30 Medium Solve
69 Longest Consecutive Sequence — 30 Medium Solve
70 Number of Islands — 30 Medium Solve
71 Same Tree — 20 Easy Solve
72 Spiral Matrix — 30 Medium Solve
73 Best Time to Buy and Sell Stock with Cooldown — 30 Medium Solve
74 Count Good Nodes in Binary Tree — 30 Medium Solve
75 Course Schedule — 30 Medium Solve
76 Kth Smallest Element in a BST — 30 Medium Solve
77 Longest Substring Without Repeating Characters — 30 Medium Solve
78 Meeting Rooms — 20 Easy Solve
79 Merge Triplets to Form Target Triplet — 30 Medium Solve
80 Min Stack — 30 Medium Solve
81 Palindrome Partitioning — 30 Medium Solve
82 Rotting Oranges — 30 Medium Solve
83 Single Number — 20 Easy Solve
84 Two Sum — 20 Easy Solve
85 Burst Balloons — 40 Hard Solve
86 Contains Duplicate — 20 Easy Solve
87 Design Add and Search Words Data Structure — 30 Medium Solve
88 Evaluate Reverse Polish Notation — 30 Medium Solve
89 Kth Largest Element in a Stream — 20 Easy Solve
90 Meeting Rooms II — 30 Medium Solve
91 Min Cost to Connect All Points — 30 Medium Solve
92 Plus One — 20 Easy Solve
93 Search a 2D Matrix — 30 Medium Solve
94 Surrounded Regions — 30 Medium Solve
95 Valid Palindrome — 20 Easy Solve
96 Word Ladder — 40 Hard Solve
97 Climbing Stairs — 20 Easy Solve
98 Design Twitter — 30 Medium Solve
99 Encode and Decode Strings — 30 Medium Solve
100 Graph Valid Tree — 30 Medium Solve
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