Toolliyo Practice

Problems explorer

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

150 problems in this topic

# Title Topics Acceptance Pts Difficulty
101 Kth Smallest Element in a BST 30 Medium Solve
102 Number of Islands 30 Medium Solve
103 Permutation in String 30 Medium Solve
104 Search a 2D Matrix 30 Medium Solve
105 Swim in Rising Water 40 Hard Solve
106 Course Schedule 30 Medium Solve
107 Daily Temperatures 30 Medium Solve
108 Kth Largest Element in a Stream 20 Easy Solve
109 Longest Palindromic Substring 30 Medium Solve
110 Merge Two Sorted Lists 20 Easy Solve
111 LRU Cache 30 Medium Solve
112 Min Cost to Connect All Points 30 Medium Solve
113 Partition Equal Subset Sum 30 Medium Solve
114 Search in Rotated Sorted Array 30 Medium Solve
115 Subsets 30 Medium Solve
116 Copy List with Random Pointer 30 Medium Solve
117 House Robber 30 Medium Solve
118 Letter Combinations of a Phone Number 30 Medium Solve
119 Longest Increasing Path in a Matrix 40 Hard Solve
120 Same Tree 20 Easy Solve
121 Invert Binary Tree 20 Easy Solve
122 Jump Game II 30 Medium Solve
123 Kth Smallest Element in a BST 30 Medium Solve
124 Rotting Oranges 30 Medium Solve
125 Word Break 30 Medium Solve
126 Binary Tree Level Order Traversal 30 Medium Solve
127 Kth Largest Element in a Stream 20 Easy Solve
128 Merge Intervals 30 Medium Solve
129 Target Sum 30 Medium Solve
130 Word Ladder 40 Hard Solve
131 Climbing Stairs 20 Easy Solve
132 Maximum Subarray 30 Medium Solve
133 Serialize and Deserialize Binary Tree 40 Hard Solve
134 Set Matrix Zeroes 30 Medium Solve
135 Subsets 30 Medium Solve
136 Coin Change 30 Medium Solve
137 Kth Largest Element in an Array 30 Medium Solve
138 Letter Combinations of a Phone Number 30 Medium Solve
139 Number of 1 Bits 20 Easy Solve
140 Valid Parenthesis String 30 Medium Solve
141 Best Time to Buy and Sell Stock with Cooldown 30 Medium Solve
142 Rotate Image 30 Medium Solve
143 Rotting Oranges 30 Medium Solve
144 Subsets II 30 Medium Solve
145 Valid Anagram 20 Easy Solve
146 Burst Balloons 40 Hard Solve
147 Clone Graph 30 Medium Solve
148 Detect Squares 30 Medium Solve
149 Longest Consecutive Sequence 30 Medium Solve
150 Word Ladder 40 Hard Solve
Toolliyo Assistant
Ask about tutorials, ebooks, training, pricing, mentor services, and support. I use public site content only—not admin or internal tools.

care@toolliyo.com

Need callback? Share your details