| 201 |
Same Tree
|
|
— |
20 |
Easy |
Solve |
| 202 |
Kth Smallest Element in a BST
|
|
— |
30 |
Medium |
Solve |
| 203 |
Invert Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 204 |
Maximum Depth of Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 205 |
Diameter of Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 206 |
Balanced Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 207 |
Same Tree
|
|
— |
20 |
Easy |
Solve |
| 208 |
Subtree of Another Tree
|
|
— |
20 |
Easy |
Solve |
| 209 |
Lowest Common Ancestor of a Binary Search Tree
|
|
— |
30 |
Medium |
Solve |
| 210 |
Binary Tree Level Order Traversal
|
|
— |
30 |
Medium |
Solve |
| 211 |
Binary Tree Right Side View
|
|
— |
30 |
Medium |
Solve |
| 212 |
Count Good Nodes in Binary Tree
|
|
— |
30 |
Medium |
Solve |
| 213 |
Validate Binary Search Tree
|
|
— |
30 |
Medium |
Solve |
| 214 |
Kth Smallest Element in a BST
|
|
— |
30 |
Medium |
Solve |
| 215 |
Construct Binary Tree from Preorder and Inorder Traversal
|
|
— |
30 |
Medium |
Solve |
| 216 |
Binary Tree Maximum Path Sum
|
|
— |
40 |
Hard |
Solve |
| 217 |
Serialize and Deserialize Binary Tree
|
|
— |
40 |
Hard |
Solve |
| 218 |
Sum of array elements
|
|
— |
20 |
Easy |
Solve |
| 219 |
Find maximum in array
|
|
— |
20 |
Easy |
Solve |
| 220 |
Reverse an array in-place
|
|
— |
30 |
Medium |
Solve |
| 221 |
Count occurrences of element
|
|
— |
20 |
Easy |
Solve |
| 222 |
Second largest element
|
|
— |
30 |
Medium |
Solve |
| 223 |
BST — inorder traversal sum #1
|
|
— |
30 |
Medium |
Solve |
| 224 |
BST — inorder traversal sum #2
|
|
— |
30 |
Medium |
Solve |
| 225 |
BST — inorder traversal sum #3
|
|
— |
30 |
Medium |
Solve |
| 226 |
BST — inorder traversal sum #4
|
|
— |
30 |
Medium |
Solve |
| 227 |
BST — inorder traversal sum #5
|
|
— |
30 |
Medium |
Solve |
| 228 |
BST — inorder traversal sum #6
|
|
— |
30 |
Medium |
Solve |
| 229 |
BST — inorder traversal sum #7
|
|
— |
30 |
Medium |
Solve |
| 230 |
BST — inorder traversal sum #8
|
|
— |
30 |
Medium |
Solve |
| 231 |
BST — inorder traversal sum #9
|
|
— |
30 |
Medium |
Solve |
| 232 |
BST — inorder traversal sum #10
|
|
— |
30 |
Medium |
Solve |
| 233 |
BST — inorder traversal sum #11
|
|
— |
30 |
Medium |
Solve |
| 234 |
BST — inorder traversal sum #12
|
|
— |
30 |
Medium |
Solve |
| 235 |
BST — inorder traversal sum #13
|
|
— |
30 |
Medium |
Solve |
| 236 |
BST — inorder traversal sum #14
|
|
— |
30 |
Medium |
Solve |
| 237 |
BST — inorder traversal sum #15
|
|
— |
30 |
Medium |
Solve |
| 238 |
BST — inorder traversal sum #16
|
|
— |
30 |
Medium |
Solve |
| 239 |
BST — inorder traversal sum #17
|
|
— |
30 |
Medium |
Solve |
| 240 |
BST — inorder traversal sum #18
|
|
— |
30 |
Medium |
Solve |
| 241 |
BST — inorder traversal sum #19
|
|
— |
30 |
Medium |
Solve |
| 242 |
BST — inorder traversal sum #20
|
|
— |
30 |
Medium |
Solve |
| 243 |
BST — inorder traversal sum #21
|
|
— |
30 |
Medium |
Solve |
| 244 |
BST — inorder traversal sum #22
|
|
— |
30 |
Medium |
Solve |
| 245 |
BST — inorder traversal sum #23
|
|
— |
30 |
Medium |
Solve |
| 246 |
BST — inorder traversal sum #24
|
|
— |
30 |
Medium |
Solve |
| 247 |
BST — inorder traversal sum #25
|
|
— |
30 |
Medium |
Solve |
| 248 |
BST — inorder traversal sum #26
|
|
— |
30 |
Medium |
Solve |
| 249 |
BST — inorder traversal sum #27
|
|
— |
30 |
Medium |
Solve |
| 250 |
BST — inorder traversal sum #28
|
|
— |
30 |
Medium |
Solve |