> For the complete documentation index, see [llms.txt](https://chiragjain.gitbook.io/neetcode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chiragjain.gitbook.io/neetcode/300-longest-increasing-subsequence/code.md).

# CODE

```python
class Solution:
    def lengthOfLIS(self, nums: List[int]) -> int:
        LIS = [1] * len(nums)

        for i in range(len(nums) - 1, -1, -1):
            for j in range(i + 1, len(nums)):
                if nums[i] < nums[j]:
                    LIS[i] = max(LIS[i], 1 + LIS[j])
        return max(LIS)
            
        
```