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6 problems total
| Title | Difficulty | Videos | Companies |
|---|---|---|---|
| Validate Binary Search Tree | medium | ||
| Maximum Depth of Binary Tree | easy | ||
| Word Break 1 - Check if word is breakable | medium | ||
| Number of Islands | medium | ||
| Least Number of Perfect Squares that Sums to n | medium | - | |
| Cousins in Binary Tree | easy | - |