Toolliyo Practice

Problems explorer

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

472 problems in this topic

# Title Topics Acceptance Pts Difficulty
151 Valid Anagram — 20 Easy Solve
152 Walls and Gates — 30 Medium Solve
153 Add Two Numbers — 30 Medium Solve
154 Alien Dictionary — 40 Hard Solve
155 Design Add and Search Words Data Structure — 30 Medium Solve
156 Kth Smallest Element in a BST — 30 Medium Solve
157 Kth Smallest Element in a BST — 30 Medium Solve
158 Missing Number — 20 Easy Solve
159 Sliding Window Maximum — 40 Hard Solve
160 Valid Parentheses — 20 Easy Solve
161 Word Search II — 40 Hard Solve
162 Add Two Numbers — 30 Medium Solve
163 Alien Dictionary — 40 Hard Solve
164 Alien Dictionary — 40 Hard Solve
165 Contains Duplicate — 20 Easy Solve
166 Course Schedule II — 30 Medium Solve
167 Design Add and Search Words Data Structure — 30 Medium Solve
168 Detect Squares — 30 Medium Solve
169 Find Median from Data Stream — 40 Hard Solve
170 Generate Parentheses — 30 Medium Solve
171 Implement Trie (Prefix Tree) — 30 Medium Solve
172 Invert Binary Tree — 20 Easy Solve
173 Meeting Rooms II — 30 Medium Solve
174 Merge Two Sorted Lists — 20 Easy Solve
175 Merge Two Sorted Lists — 20 Easy Solve
176 Reverse Nodes in k-Group — 40 Hard Solve
177 Serialize and Deserialize Binary Tree — 40 Hard Solve
178 Valid Anagram — 20 Easy Solve
179 Valid Anagram — 20 Easy Solve
180 Contains Duplicate — 20 Easy Solve
181 Design Add and Search Words Data Structure — 30 Medium Solve
182 Detect Squares — 30 Medium Solve
183 Encode and Decode Strings — 30 Medium Solve
184 Implement Trie (Prefix Tree) — 30 Medium Solve
185 Kth Largest Element in an Array — 30 Medium Solve
186 Kth Smallest Element in a BST — 30 Medium Solve
187 Lowest Common Ancestor of a Binary Search Tree — 30 Medium Solve
188 Meeting Rooms II — 30 Medium Solve
189 Merge k Sorted Lists — 40 Hard Solve
190 Merge k Sorted Lists — 40 Hard Solve
191 Reverse Linked List — 20 Easy Solve
192 Valid Anagram — 20 Easy Solve
193 Valid Parentheses — 20 Easy Solve
194 Alien Dictionary — 40 Hard Solve
195 Detect Squares — 30 Medium Solve
196 Encode and Decode Strings — 30 Medium Solve
197 Find the Duplicate Number — 30 Medium Solve
198 House Robber II — 30 Medium Solve
199 Implement Trie (Prefix Tree) — 30 Medium Solve
200 Meeting Rooms — 20 Easy Solve
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