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7 problems total
| Title | Difficulty | Videos | Companies |
|---|---|---|---|
| Longest Substring Without Repeating Characters | medium | ||
| Longest Palindromic Substring | medium | ||
| Longest Common Prefix in array of string | easy | - | |
| Longest Valid Parentheses | hard | - | |
| Longest Consecutive Sequence | medium | ||
| Longest Increasing Path in a Matrix | hard | - | |
| Longest Palindromic Subsequence 1 - Get Length | medium | - |