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def merge_sorted_arrays(
    arr1: list[int],
    arr2: list[int],
    descending: bool = False
) -> list[int]:
    """Merge two sorted arrays into a single sorted array."""
    result = []
    i = j = 0

    while i < len(arr1) and j < len(arr2):
        if arr1[i] <= arr2[j]:
            result.append(arr1[i])
            i += 1
        else:
            result.append(arr2[j])
            j += 1

    result.extend(arr1[i:])
    result.extend(arr2[j:])

    if descending:
        result.reverse

{
  "name": "merge_sorted_arrays",
  "document_type": "python_function",
  "purpose": "Merge two sorted arrays into a single sorted array",
  "description": "Takes two pre-sorted integer arrays and merges them using a two-pointer technique to produce a single sorted output. Optionally reverses the result for descending order.",
  "parameters": [
    {
      "name": "arr1",
      "type": "list[int]",
      "description": "First sorted array of integers",
      "required": true
    },
    {
      "name": "arr2",
      "type": "list[int]",
      "description": "Second sorted array of integers",
      "required": true
    },
    {
      "name": "descending",
      "type": "bool",
      "default": "False",
      "description": "If True, return result in descending order",
      "required": false
    }
  ],
  "return_type": "list[int]",
  "return_description": "A new sorted list containing all elements from both input arrays",
  "complexity": {
    "time": "O(n + m)",
    "space": "O(n + m)"
  },
  "is_async": false,
  "is_generator": false,
  "examples": [
    {
      "code": "merged = merge_sorted_arrays([1, 3, 5], [2, 4, 6])",
      "description": "Basic merge of two sorted arrays"
    },
    {
      "code": "merged_desc = merge_sorted_arrays([1, 3, 5], [2, 4, 6], descending=True)",
      "description": "Merge with descending order output"
    }
  ],
  "docstring_style": "google"
}