public double FindLowerMedianSortedArraysSameLength(ArrayNew nums1, int index11, int index12, ArrayNew nums2, int index21, int index22)
{
int subLength = index12 - index11 + 1;
if (subLength == 1)
{
return(Math.Min(nums1[index11], nums2[index21]));
}
ArrayNew numsLower;
ArrayNew numsBigger;
int lowerIndex1;
int lowerIndex2;
int biggerIndex1;
int biggerIndex2;
var medianLowerIndex = (int)Math.Ceiling(((double)(subLength)) / 2) - 1;
if (nums1[index11 + medianLowerIndex] < nums2[index21 + medianLowerIndex])
{
numsLower = nums1;
numsBigger = nums2;
lowerIndex1 = index11;
lowerIndex2 = index12;
biggerIndex1 = index21;
biggerIndex2 = index22;
}
else
{
numsLower = nums2;
numsBigger = nums1;
lowerIndex1 = index21;
lowerIndex2 = index22;
biggerIndex1 = index11;
biggerIndex2 = index12;
}
if (subLength % 2 == 1)
{
// variant 1
return(FindLowerMedianSortedArraysSameLength(numsLower, lowerIndex1 + medianLowerIndex, lowerIndex2, numsBigger, biggerIndex1, biggerIndex1 + medianLowerIndex));
// variant 2
//var result = FindLowerMedianSortedArraysSameLength(numsLower, lowerIndex1 + medianLowerIndex+1, lowerIndex2, numsBigger, biggerIndex1, biggerIndex1 + medianLowerIndex-1);
//if (result < numsLower[lowerIndex1 + medianLowerIndex])
// return numsLower[lowerIndex1 + medianLowerIndex];
//return result;
}
else
{
return(FindLowerMedianSortedArraysSameLength(numsLower, lowerIndex1 + medianLowerIndex + 1, lowerIndex2, numsBigger, biggerIndex1, biggerIndex1 + medianLowerIndex));
}
}
/// <summary>
/// Este es el método principal
/// </summary>
/// <param name="nums1"></param>
/// <param name="nums2"></param>
/// <returns></returns>
public double FindMedianSortedArrays(int[] nums1, int[] nums2)
{
if (nums1 == null && nums2 == null ||
(nums1 != null && nums1.Length == 0 && nums2 != null && nums2.Length == 0) ||
(nums1 == null && nums2 != null && nums2.Length == 0) ||
(nums2 == null && nums1 != null && nums1.Length == 0)
)
{
return(-1);
}
if (nums1 == null || nums1.Length == 0)
{
if (nums2.Length % 2 == 1)
{
return(nums2[(int)Math.Floor(((double)(nums2.Length)) / 2)]);
}
else
{
return(((double)(nums2[nums2.Length / 2] + nums2[(nums2.Length / 2) - 1])) / 2);
}
}
if (nums2 == null || nums2.Length == 0)
{
if (nums1.Length % 2 == 1)
{
return(nums1[(int)Math.Floor(((double)(nums1.Length)) / 2)]);
}
else
{
return(((double)(nums1[nums1.Length / 2] + nums1[(nums1.Length / 2) - 1])) / 2);
}
}
if (nums1.Length == nums2.Length)
{
ArrayNew nums1new = new ArrayNew(nums1);
ArrayNew nums2new = new ArrayNew(nums2);
double result1 = FindLowerMedianSortedArraysSameLength(nums1new, 0, nums1new.Length - 1, nums2new, 0, nums2new.Length - 1);
double result2 = FindBiggerMedianSortedArraysSameLength(nums1new, 0, nums1new.Length - 1, nums2new, 0, nums2new.Length - 1);
return((result1 + result2) / 2);
}
else
{
int minValue = nums1[0] < nums2[0] ? nums1[0] : nums2[0];
int maxValue = nums1[nums1.Length - 1] > nums2[nums2.Length - 1] ? nums1[nums1.Length - 1] : nums2[nums2.Length - 1];
ArrayNew nums1new = null;
ArrayNew nums2new = null;
if (nums1.Length > nums2.Length)
{
nums1new = new ArrayNew(nums1);
nums2new = new ArrayNew(nums2);
}
else
{
nums1new = new ArrayNew(nums2);
nums2new = new ArrayNew(nums1);
}
if ((nums1new.Length + nums2new.Length) % 2 == 0)
{
var halfDif = (nums1new.Length - nums2new.Length) / 2;
nums2new.MaxValue = maxValue;
nums2new.MinValue = minValue;
nums2new.AddOver = halfDif;
nums2new.AddUnder = halfDif;
double result1 = FindLowerMedianSortedArraysSameLength(nums1new, 0, nums1new.Length - 1, nums2new, 0, nums2new.Length - 1);
double result2 = FindBiggerMedianSortedArraysSameLength(nums1new, 0, nums1new.Length - 1, nums2new, 0, nums2new.Length - 1);
return((result1 + result2) / 2);
}
else
{
var halfDif = ((nums1new.Length - nums2new.Length) - 1) / 2;
nums2new.MaxValue = maxValue;
nums2new.MinValue = minValue;
nums2new.AddOver = halfDif + 1;
nums2new.AddUnder = halfDif;
return(FindLowerMedianSortedArraysSameLength(nums1new, 0, nums1new.Length - 1, nums2new, 0, nums2new.Length - 1));
}
}
}
