Toolliyo Practice

Problems explorer

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

8773 problems

# Title Topics Acceptance Pts Difficulty
1001 Unique Paths — 30 Medium Solve
1002 Valid Anagram — 20 Easy Solve
1003 Valid Sudoku — 30 Medium Solve
1004 Walls and Gates — 30 Medium Solve
1005 Word Search — 30 Medium Solve
1006 Add Two Numbers — 30 Medium Solve
1007 Alien Dictionary — 40 Hard Solve
1008 Balanced Binary Tree — 20 Easy Solve
1009 Best Time to Buy and Sell Stock — 20 Easy Solve
1010 Burst Balloons — 40 Hard Solve
1011 Car Fleet — 30 Medium Solve
1012 Clone Graph — 30 Medium Solve
1013 Combination Sum II — 30 Medium Solve
1014 Construct Binary Tree from Preorder and Inorder Traversal — 30 Medium Solve
1015 Construct Binary Tree from Preorder and Inorder Traversal — 30 Medium Solve
1016 Copy List with Random Pointer — 30 Medium Solve
1017 Daily Temperatures — 30 Medium Solve
1018 Diameter of Binary Tree — 20 Easy Solve
1019 Distinct Subsequences — 40 Hard Solve
1020 Distinct Subsequences — 40 Hard Solve
1021 Evaluate Reverse Polish Notation — 30 Medium Solve
1022 Evaluate Reverse Polish Notation — 30 Medium Solve
1023 Gas Station — 30 Medium Solve
1024 Graph Valid Tree — 30 Medium Solve
1025 Implement Trie (Prefix Tree) — 30 Medium Solve
1026 Invert Binary Tree — 20 Easy Solve
1027 K Closest Points to Origin — 30 Medium Solve
1028 Kth Largest Element in an Array — 30 Medium Solve
1029 Kth Smallest Element in a BST — 30 Medium Solve
1030 Kth Smallest Element in a BST — 30 Medium Solve
1031 LRU Cache — 30 Medium Solve
1032 Longest Consecutive Sequence — 30 Medium Solve
1033 Longest Increasing Subsequence — 30 Medium Solve
1034 Longest Palindromic Substring — 30 Medium Solve
1035 Longest Substring Without Repeating Characters — 30 Medium Solve
1036 Longest Substring Without Repeating Characters — 30 Medium Solve
1037 Max Area of Island — 30 Medium Solve
1038 Meeting Rooms — 20 Easy Solve
1039 Merge Triplets to Form Target Triplet — 30 Medium Solve
1040 Min Stack — 30 Medium Solve
1041 Minimum Interval to Include Each Query — 40 Hard Solve
1042 Minimum Interval to Include Each Query — 40 Hard Solve
1043 Missing Number — 20 Easy Solve
1044 Multiply Strings — 30 Medium Solve
1045 N-Queens — 40 Hard Solve
1046 Non-overlapping Intervals — 30 Medium Solve
1047 Number of 1 Bits — 20 Easy Solve
1048 Number of Connected Components in an Undirected Graph — 30 Medium Solve
1049 Pacific Atlantic Water Flow — 30 Medium Solve
1050 Palindromic Substrings — 30 Medium Solve
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